WO2004062713A1 - Injection auxiliary tool - Google Patents
Injection auxiliary tool Download PDFInfo
- Publication number
- WO2004062713A1 WO2004062713A1 PCT/JP2003/015602 JP0315602W WO2004062713A1 WO 2004062713 A1 WO2004062713 A1 WO 2004062713A1 JP 0315602 W JP0315602 W JP 0315602W WO 2004062713 A1 WO2004062713 A1 WO 2004062713A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- injection
- barrel
- contrast agent
- holding
- aid
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
- A61M5/31583—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod
- A61M5/31586—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod performed by rotationally moving or pivoted actuator, e.g. an injection lever or handle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/007—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests for contrast media
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
- A61M5/31573—Accuracy improving means
- A61M5/31575—Accuracy improving means using scaling up or down transmissions, e.g. gearbox
Definitions
- the present invention relates to an injection aid suitable for injecting a contrast agent.
- a contrast medium is injected into a blood vessel or the like, the injection has been performed using a drip, a syringe, or an automatic injection device in which a syringe is set.
- a contrast medium is injected into a blood vessel by the operation of piercing a patient's blood vessel with a syringe needle and pushing by hand.
- injection may be performed using a mechanical syringe drive mechanism (for example, see Japanese Patent Application Laid-Open No.
- this device is a device for injecting the contrast agent filled in the barrel in one operation at a stroke. It is not possible to operate with the fingers of the hand, but it is necessary to fix the bottom of the table to the operating table and press the operation pedal with the palm of your hand with considerable force.
- a device for manually injecting a fixed amount of subcutaneous injection into a large number of animals which is not a contrast medium injection capturing device, is disclosed in, for example, U.S. Pat. No. 3,110,310 and U.S. Pat. It is described in Japanese Patent Publication No.
- An apparatus for manually implanting a subcutaneous pellet is described in, for example, US Pat. No. 2,883,984.
- a device for manually injecting medical pasta is disclosed in, for example, US Pat. It is described in Japanese Patent Publication No. 8778.
- the contrast medium In order to avoid such problems, it is sufficient to inject the contrast medium by operating the syringe by hand.However, the contrast medium has a large volume to be injected, and unlike a conventional therapeutic drug syringe, the cross-sectional area is different. It is necessary to use a large syringe.
- the present invention solves the above-mentioned problems, eliminates the need for a control device such as an automatic injection device, does not need to press the hand with a great deal of force, can perform an injection operation with the power of a finger, and achieves a patient's blood vessel If the patient's blood vessel contracts during injection or the tube is blocked due to the injection of a needle through the needle or the injection of a contrast agent, the pressure fluctuation caused by the It is an object of the present invention to provide a manually operated injection trap which can be felt with a sharp finger and can stop or slow down the injection operation. Disclosure of the invention
- the present invention has the following structure. Done.
- the injection capturing aid according to the present invention detachably holds a contrast agent injector capable of injecting a contrast agent filled in a barrel by pushing a plunger, and assists an injection operation of the held contrast agent injector.
- Injection trapping tool
- An operation lever that can be operated by a finger of a hand
- a power transmitting means for transmitting the operation of the operation lever to the pushing means by deceleration based on the principle of leverage.
- the barrel of the contrast agent injector is held by the injection aid, and the operation of the operation lever is transmitted to the pushing means by deceleration with the principle of leverage, and the barrel is pushed by the pushing means.
- the injection operation can be performed with the power of a finger, and when the injection needle is pierced through the patient's blood vessel, Even if the patient's blood vessels contract during the injection or the tube is blocked, the pressure fluctuations caused by the injection can be felt with the fingers with particularly sharp pressure, and the injection operation is stopped or stopped. It can be made.
- the initial volume of the contrast agent filled in the barrel is 40 ml or more.
- the stroke range of the plunger can be appropriately adjusted while injecting the contrast agent required for contrast agent imaging.
- a control device such as an automatic injection device is not required even within the range of the stroke, and there is no need to press with a great deal of force on the palm, and the injection operation can be performed with the force of a finger.
- the initial volume of the contrast agent filled in the barrel is 250 ml or less.
- the barrel preferably has a cross-sectional area of 3 cm 2 or more.
- the barrel preferably has a cross-sectional area of 20 cm 2 or less.
- a distance from a tip of the barrel to a fulcrum of a power transmission means is 40 cm or less.
- a press when the plunger of the barrel is pushed by the pushing means is unlikely to occur, and it is easy to take and handle with the hand, and the operation with the hand is easy.
- a distance from a tip of the barrel to a fulcrum of a power transmission means is 5 cm or more.
- the power transmission means may be:
- a rotating member that rotates around a fulcrum of the pivot by operating the operating lever It is preferable that, when the rotating member rotates in the pushing direction, the pushing means advances to the barrel side.
- the turning member may be the operation lever itself, a member that turns integrally with the operation lever, or a member that turns separately from the operation lever. Is also good.
- the pushing means advances directly or indirectly to the barrel side by an action from an action point of the rotating member.
- the housing aid it can be pushed with a simple structure. Further, in the injection and trapping tool of the present invention, it is preferable that the distance from the fulcrum of the roller to the point of application is 0.5 cm or more.
- a sufficient distance for the pushing means to be pushed by one operation can be sufficiently secured, the operation frequency of the operating lever can be reduced, and the operability is good. Further, in the injection / capture aid according to the present invention, it is preferable that a distance from a fulcrum of the roller to the point of application is 3 cm or less.
- the force required to operate the operation lever can be reduced, and the operation can be performed with the force of a finger.
- the pressure fluctuation at the time of occurrence of an abnormality in the injection of the contrast medium can be sensed with a finger having a particularly sharp pressure interval.
- a direction in which the plunger is pushed by the pushing means it is preferable that the angle between the fulcrum of the roller and the direction connecting the action point is 30 ° or more and 150 ° or less.
- the injection assisting device of the present invention transmits the operation of the operation lever to the pushing means in a decelerated manner during all operations from the initial position of the operation lever to the maximum operation position. It is preferable that
- the operation of the operation lever is transmitted to the pushing means by decelerating force.
- the force required for the operation of the push lever is smaller than the force transmitted to the pushing means, and the speed at which the operating lever is operated is faster than the speed at which the pushing means moves. It is preferable because pressure fluctuation is easily felt.
- the injection assisting tool of the present invention is not capable of performing all the operations from the start of injection of the initial contrast agent filled in the barrel to the end of injection by one operation of the operation lever, and a plurality of operations of the operation lever.
- the operation from the start to the end of the injection of the initial contrast agent filled in the barrel can be performed by the operation (preferably, ⁇ .
- the operation lever can be operated a plurality of times. It can perform everything from the start of the injection of the contrast agent initially filled in the barrel to the end of the injection, and can inject the contrast agent by grasping the operation rep with finger power.
- the tool allows the barrel to be viewed in a state where the barrel is held by the holding means.
- the barrel can be visually recognized while holding the barrel by the holding means, and the operator can attach the barrel to the barrel of the contrast agent injector even while operating the operation lever.
- the scale and the like can be seen, whereby the amount of the contrast agent to be filled can be easily confirmed.
- the injection and capture aid of the present invention is for injecting the contrast agent at an injection speed of 5 m 1 s or less on average.
- the contrast medium is injected at an average injection speed of 5 m1 ns or less, and more appropriate contrast imaging can be performed. Also, injection Tosukegu of the present invention, it is preferable that the contrast agent is for entering Note in 1 XI 0 6 P a following injection pressure.
- this injection capturing auxiliary tool is of order to inject contrast at 1 X 1 0 6 P a following injection pressure, to easily operate the operation lever with fingers without barrel exploding
- the contrast agent can be injected while the pressure fluctuation can be sensed with the fingertip.
- the injection pressure of the contrast agent must be higher than the fluid pressure of the injection destination, such as blood pressure or pressure in the ureter.
- the injection / capture aid of the present invention is for injecting the contrast agent into a urinary tract or a small vein.
- the injection trap is suitable for use in injecting a contrast medium into the urinary tract or venules. Further, it is preferable that the injection assistant of the present invention is provided with a handle at a position where it can be grasped by a human hand together with the operation lever.
- a handle is provided at a position where it can be grasped by a human hand together with the operation lever, and the operation lever can be operated by the operation of grasping a finger. Further, it is preferable that the injection / capture aid of the present invention can be lifted and operated by grasping the operation lever and the handle.
- the injection capturing aid it is possible to lift and operate by grasping the operation lever and the handle, and the operator can easily operate with his / her finger in any posture.
- the pressure fluctuation during injection of the contrast agent can be easily felt.
- the injection / capture aid of the present invention is a bistor type in which the handle and the holding means are integrated.
- the handle and the holding means are of a bistor type integrated with each other, and can be easily operated. Further, in the injection capturing aid of the present invention, when the holding means is openably and closably closed with a receiving portion on which the pallet of the contrast agent injector can be mounted, the holding device is mounted on the receiving portion. And a holding part for holding a part of the barrel.
- the barrel of the contrast agent injector is placed on the receiving portion, and a part of the barrel is held by the holding portion, so that the attachment and detachment of the contrast agent injector is easy and simple. It can be securely held.
- the holding portion is a transparent body. According to this injection trap, the holding portion is a transparent body, and the amount of the contrast agent to be filled can be easily confirmed by checking the scale or the like provided on the barrel of the contrast agent injector.
- the holding portion has an elastic body that presses and holds a part of the barrel.
- the holding section has the elastic body that presses and holds a part of the barrel, the barrel can be reliably pressed and held without damaging the barrel.
- the barrel of the contrast agent injector has a flange on the opening side of the barrel, and the flange is brought into contact with the holding portion.
- the movement of the barrel in the pressing direction can be reliably restricted by bringing the flange of the barrel into contact with the holding portion.
- the receiving portion may have a projection, and the flange may be engaged with the projection.
- the contrast agent injector has a plunger having a head having a head engaged with the plunger, and the pressing part of the pressing means and the head of the biston are connected to each other. It is preferable to interpose an intermediate plate between them.
- the pressing force from the pressing means moves the intermediate plate and the piston.
- the intermediate plate regulates the transmission to the plunger via the biston even if there is a shift on the pushing means side during operation.
- the injection capturing aid of the present invention may be configured such that the intermediate plate is engaged with an engagement sliding portion which is engaged and held movably in a pushing direction toward the holding means, and a head of the piston. It is preferable to have an engagement holding portion for holding.
- the intermediate plate is movably engaged and held in the pushing direction on the holding means side, and is smoothly pushed and moved by engaging and holding the head of the biston engaged with the plunger. Can move in any direction.
- the barrel of the contrast agent injector is a transparent body and has a scale indicating the amount of the contrast agent to be filled.
- the barrel of the contrast agent injector is a transparent body and has a scale indicating the amount of the contrast agent to be filled, the amount of the contrast agent can be easily visually checked. it can.
- the contrast agent preferably contains a barium sulfate enema.
- the contrast agent also includes a barium sulfate enema, and is preferably used in the medical field.
- FIG. 1 is a side view of the injection trap according to the first embodiment
- Figure 2 is a perspective view of the injection aid
- Figure 3 is a plan view of the injection trap
- FIG. 4 is a schematic diagram of the power transmission means
- FIG. 5 is a schematic configuration diagram showing an operation state of the power transmission means
- Fig. 6 is a perspective view before operation by the operation lever.
- Fig. 7 is a perspective view when operating with the operation lever.
- FIG. 8 is a perspective view showing the holding means
- Figure 9 is a plan view of the barrel holder
- FIG. 10 is a cross-sectional view showing a plunger pushing state.
- FIGS. 11A to 11C are side views of the contrast agent injector
- FIG. 12 is a side view showing a modified example of the injection assistant according to the first embodiment
- FIG. 13 is a diagram showing a power transmission means of the injection trap according to the second embodiment
- FIG. 14 is a side view of the injection trap according to the third embodiment.
- FIG. 15 is a perspective view of an injection aid according to the third embodiment
- FIG. 16 is a plan view of the injection trap according to the third embodiment.
- FIG. 17 is a perspective view showing a holding unit in the third embodiment
- FIG. 18 is a front view of the intermediate plate according to the third embodiment.
- FIG. 19 is a perspective view of the intermediate plate according to the third embodiment.
- 20A to 20C are perspective views of the contrast agent injector according to the third embodiment.
- FIG. 21 is a side view showing a modified example of the injection assistant according to the third embodiment.
- FIG. 22 is a schematic configuration diagram of a power transmission unit according to the fourth embodiment.
- FIG. 23 is a schematic configuration diagram showing an operation state of the power transmission means in the fourth embodiment
- FIG. 24 is a diagram showing a conventional manual contrast medium injection aid.
- FIG. 1 is a side view of the injection and trapping device in the first embodiment
- Fig. 2 is a perspective view of the injection and injection device
- Fig. 3 is a plan view of the injection and injection device
- Fig. 4 is a schematic configuration diagram of power transmission means
- Fig. FIG. 6 is a schematic configuration diagram showing an operating state of the transmission means.
- FIG. 6 is a perspective view before operation by an operation lever.
- 7 is a perspective view at the time of operation by the operation lever
- FIG. 8 is a perspective view showing the holding means
- FIG. 9 is a plan view of the barrel holding portion
- FIG. 10 is a cross-sectional view showing a plunger pushing state
- FIG. A to l 1 C are side views of the contrast agent injector.
- the injection capturing aid 1 of this embodiment includes a holding means 10, a pushing means 20, an operation repeller 30, and a power transmission means 40, and performs an injection operation of the contrast agent injector 50. Assist.
- This contrast agent injector 50 includes a barrel 51 and a plunger 52 as shown in FIGS. 11A to 11C.
- the barrel 51 is filled with a predetermined amount of a contrast agent, the discharge port 51a of the barrel 51 is closed with a cap 51b, and the cap 51b is removed to use the injection pipe 53 when used. Connecting.
- An injection needle (not shown) is connected to the other end of the injection pipe 53.
- the barrel 51 is formed of a transparent body such as a transparent resin or transparent glass, and has a flange 5lc on the opening side.
- a label 55 having a scale 54 indicating the amount of the contrast agent to be filled is adhered to the barrel 51 so that the amount of the contrast agent can be easily confirmed visually.
- a screw hole 52a is formed on the opening side of the barrel 51.
- the screw hole 52a is provided at the tip of the mouth 21 forming the pushing means 20.
- the screw portion 21a1 of the pressing portion 21a is detachably screwed.
- the pressing portion 21a has a pressing flange portion 21a2 formed at the base of the screw portion 21a1, and the outer diameter D1 of the pressing flange portion 21a2 is the hole diameter of the screw hole portion 52a. The diameter is larger than D2 and smaller than the inner diameter D3 of barrel 51.
- the pressing flange portion 21a2 comes into contact with the pressing surface 52b of the plunger 52.
- the plunger 52 can be pushed.
- the plunger 52 slides in the barrel 51, and the contrast agent in the barrel 51 is injected from the injection pipe 53 connected to the outlet 51a of the barrel 51.
- the contrast agent injector 50 is exchangeably held, so that the work of replacing the contrast agent injector 50 is good.
- This drug injector 50 is for 100 ml (Fig. 11A) and for 80 ml (Fig. 11B, 5 For Om1 (Figure 11C is shown, the initial volume of contrast agent filled in the barrel 51 should be at least 4 Oml, especially at least 7 Om1. Even though the contrast agent required for imaging can be injected, even if the stroke range of the plunger 52 is within an appropriate range, there is no need to press with a great deal of force on the palm, and the injection operation can be performed with the force of a finger, and the contrast Pressure fluctuations at the time of abnormal occurrence during drug injection can be felt with a finger having a particularly sharp pressure sensation, which is preferable.
- the stroke range of the plunger 52 is kept within an appropriate range. It is preferable because the injection operation can be performed with the force of. Also, the cross-sectional area of the barrel 51 should be 3 cm 2 or more, especially 7 cm 2 or more. Without the injection trap, it is necessary to press with a palm with a considerable force. It is unnecessary, and the stroke range of the plunger 52 is within the appropriate stroke range for the volume of the contrast agent required for the contrast agent imaging.
- the pressure fluctuation at the time of occurrence of an abnormality can be sensed with the fingers of the hand whose pressure is particularly sharp, which is preferable.
- the cross-sectional area of the apparel 5 1, 2 0 cm 2 or less to be particularly 1 5 cm 2 hereinafter, less burden on the device, and can be injection operation by the force of a finger, Note morphism in contrast agents It is preferable because the pressure change when an abnormality occurs can be sensed with the fingers of the hand whose pressure sense is particularly sharp.
- the contrast agent to be filled in the barrel 51 can be used as a contrast agent, for example, as shown in Table 1. In particular, it is preferably used as a contrast agent for radiography.
- the injection aid 1 is a piston type in which the handle 3 and the holding means 10 are integrated.
- the receiving portion 11 and the holding portion 12 are formed in a shape in which a transparent resin cylinder is divided in the axial direction, and the holding portion 12 is formed shorter than the receiving portion 11.
- One end of the holding portion 12 can be opened and closed with respect to the receiving portion 11 with the hinge 13 as a fulcrum, and the claw portion 14 at the other end is engaged with the locking portion 15 of the receiving portion 11. Fixed.
- the barrel 51 of the contrast agent injector 50 is placed on the receiving part 11 and a part of the barrel 51 is held by the holding part 12, so that the contrast agent injector 50 can be easily attached and detached. Moreover, it can be easily and securely held.
- the receiving part 11 and the holding part 12 are transparent, and the barrel 51 of the contrast agent injector 50 is visible.
- the scale and the like provided on the barrel 51 of the agent injector 50 can be seen, whereby the liquid amount of the contrast agent to be filled can be easily confirmed.
- the holding portion 12 has an engagement groove 12 b formed on the pressing surface 12 a side.
- the elastic body 16 is embedded in and engaged with the groove 12b. By closing and fixing the holding portion 12, the elastic body 16 can press and hold a part of the barrel 51, and can surely press and hold the barrel 51 without damaging the barrel 51.
- the elastic body 16 uses a flexible resin pipe, but may be made of rubber or the like. Further, the elastic body 16 is provided at one place in this embodiment, but may be provided at a plurality of places, or may be provided on the entire pressing surface 12a.
- the flange 51c is brought into contact with the end 11a of the receiving portion 11 and the end 12c of the holding portion 12 on the opening side of the barrel 51, thereby pressing the barrel 51.
- the movement in the direction can be reliably regulated.
- the knob 23 of the rod 21 is slightly pulled to pull the plunger 52 and blood is injected. By visually checking the inflow into the pipe 53, it can be confirmed whether the tip of the injection needle has entered the blood vessel.
- the pushing means 20 provided in the injection aid 1 includes a rod 21, a pressing portion 21 a provided at the tip of the rod 21, and a knob 2 attached to the head of the rod 21.
- the rod 21 is provided movably on the guide body 2.
- the operation lever 30 provided in the injection trapping tool 1 also functions as a rotation member that rotates around the fulcrum O1 of the roller by operating the operation lever 30.
- the support shaft 35 fixed to the handle 3 penetrates the grip 30 a on the side gripped by the finger of the operation leopard 30, and the support shaft 35 fixed to the handle 3. It is provided rotatably at the center. By operating the operating lever 30 by gripping the grip portion 30a, it functions as the fulcrum O1 of the armature.
- Both the handle 3 and the operation lever 30 are provided at positions where they can be gripped by a human hand.
- the handle 3 is gripped by the thumb of one hand
- the operating lever 30 is gripped by the other four fingers
- the operating lever 30 is operated by hand power by pulling the handle 3.
- the operation lever 30 can be operated by the operation of grasping the finger. It is also possible to lift and operate by gripping the operation lever 30 and the handle 3. Therefore, regardless of the posture of the operator, the operator can easily operate with his / her finger, and can easily feel the pressure fluctuation during the injection of the contrast agent.
- the power transmission means 40 provided in the injection assistant 1 decelerates and transmits the operation of the operation hopper 30 to the pushing means 20 based on the principle of leverage. As shown in FIGS. 4 and 5, the power transmission means 40 is moved by being pushed by the operation lever 30 and the operation part 30 b of the operation lever 30 around the lever fulcrum O 1.
- a chucking plate 32, and the chucking plate 32 slidably abuts the operating groove 3O bi of the operation section 30b.
- the chucking plate 32 has a chucking slot 32 a through which the rod 21 is pushed through by frictionally engaging with the mouth 21, and the operation of the operation lever 30.
- the chucking plate 21 is inclined, and the long chucking hole 3 2 a of the chucking plate 21 frictionally engages with the rod 21, and the port 21 is drawn. It is sent forward from the state of 4, and the state shown in Fig. 5 is obtained.
- An elastic member (spring) 33 is disposed between the fixing portion 80 of the guide body 2 and the chucking plate 32 while passing through the rod 21, and the elastic member 33 is The jacking plate 32 is urged to return to the initial state.
- a stopper 34 is provided to prevent the rod 21 from moving backward.
- the stopper 34 includes a reper 34 a that is cantilevered at the upper portion of the handle 3, and an elastic member (spring) that resiliently supports between the leper 34 a and the chucking plate 32. It is made up of 34 c and passes through rod 21 at through hole 34 a 1 of leper 34 a. As soon as the operating lever 30 is loosened, the chucking plate 32 becomes perpendicular to the rod 21 and slides against the rod 21 so that the chucking plate 32 is locked. Do not move C21 back.
- the spring force of the elastic member 33 is set to be greater than the spring force of the elastic member 34c, and when the contrast agent injector 50 is attached and the operation lever 30 is pulled as shown in Fig. 4, operation is performed.
- the lever 30 rotates in the pushing direction about the lever fulcrum ⁇ 1, and pushes the chucking plate 3 2 slidably in contact with the operating groove 30b1 of the operation unit 30b. I do.
- the chucking plate 3 2 moves forward while tilting against the restoring force of the elastic member 3 3.
- the plunger 51 of the contrast agent injector 50 is pressed by being chucked by the chucking slot 3 2a of the plate 32 and moving forward, and the contrast agent is discharged from the discharge port 51 a of the barrel 51. Is done.
- the operating lever 30 is released, the operating lever 30 and the chucking plate 32 return to the initial position by the restoring force of the elastic member 33 without any influence on the rod 21.
- the barrel 51 of the contrast agent injector 50 is held by the injection assistant 1, and the operation of the operation hopper 30 is decelerated and transmitted to the pushing means 20 based on the principle of leverage.
- the plunger 52 of the barrel 51 is pushed by the moving means 20 to inject the contrast agent filled in the barrel 51, so that the injection operation can be performed with the force of the finger operating the operation lever 30.
- a control device such as an automatic injection device is not required, and the palm can be used with considerable force. There is no need to press, and injection can be performed with the power of a finger.
- the distance L 1 from the tip of the barrel 51 to the fulcrum O 1 of the power transmission means 20 is 40 cm or less, especially 25 cm or less. It is preferable that Thus, even if the initial volume of the contrast agent filled in the barrel 51 of the contrast agent injector 50 is large, it is easy to handle and operate the injection capturing aid 1 by hand. . Further, the distance L 1 is preferably 5 cm or more, particularly preferably 10 cm or more. Thus, even if the initial volume of the contrast agent filled in the barrel 51 of the contrast agent injector 50 is large, the attachment / detachment of the contrast agent injector 50 becomes easy.
- the power transmission means 20 is provided around the lever fulcrum O l by the operating part 30 b integral with the operating lever 30 and by the chucking plate 32.
- a member such as a separate revolver is provided on the operation lever 30 so as to rotate on the body, and when this member rotates, the pushing means 20 is configured.
- the chucking plate 32 and the rod 21 may be advanced to the barrel side.
- a member that rotates integrally or integrally with the operation lever 30 around the lever fulcrum O 1 is provided, and when this member rotates, the pushing means moves forward to the barrel side, whereby the operation is performed.
- the operation of the lever 30 can be pushed by the pushing means 20 with a simple structure based on the principle of leverage.
- the distance L2 from the fulcrum O1 of the tiller to the point of application O2 is preferably 0.5 cm or more, particularly preferably 0.7 cm or more.
- the distance L2 from the fulcrum O1 to the point of application O2 is preferably 3 cm or less, particularly preferably 2 cm or less.
- the direction DP in which the plunger 52 is pushed by the pushing means 20 and the operating lever 40 as the power transmission means 40 is 30% or more and 150 ° or less, particularly 45 ° or more and 135 ° or less, excluding friction, etc., 50% of the force transmitted by the power transmission means 40 The above is transmitted to the pushing means 20, which is preferable.
- the angle 0 is not less than 80 ° and not more than 135 °.
- the operation of the operation lever 130 is transmitted to the pushing means 20 by deceleration and increase. That is, in all operations from the initial position of the operation lever 30 to the maximum operation position, the force required to operate the operation lever 30 is smaller than the force transmitted to the pushing means 20 and It is preferable that the speed at which the operating lever 30 is operated is higher than the speed at which the pushing means 20 moves, so that the operation can be easily and consistently performed with the force of a finger, and pressure fluctuation can be easily sensed.
- the material of the rod 21, the chucking plate 32, and the elastic member 33 is made of metal, and the other members are made of structural plastic, from the viewpoint of weight and durability. preferable.
- the metal member of the injection trapping tool particularly a large volume rod
- a non-magnetic metal such as non-magnetic stainless steel is preferable because the possibility of disturbing the magnetic field is further reduced.
- FIG. 12 is a side view showing a modification of the injection / capture aid according to the first embodiment.
- the injection aid 1a of this modification is provided with a projection 71 on the receiving portion 70 of the holding means 10a, and when the contrast medium injector 50 is mounted on the holding means 10a, The protrusion 71 engages with the flange 51c of the barrel 51.
- the knob 23 is pulled rearward on the opposite side to the pressing direction, so that the plunger 52 is pressed in the pressing direction.
- the barrel 51 is pulled back in the opposite direction, the barrel 51 can be restricted from being pulled back in the direction opposite to the pressing direction.
- FIG. 13 shows the vicinity of the power transmitting means 4 Oa of the injection capturing aid 1 b of the second embodiment, which is an example in which the power transmitting means 40 provided in the injection capturing aid 1 of the first embodiment is modified.
- a guide member 90 is provided on the operation lever 30 in parallel with the rod 21.
- the guide member 90 is provided with two pairs of support rollers 91 disposed at two front and rear positions. It is movably supported in the backward direction.
- Rack teeth 90 a are formed on the guide member 90, and pinion teeth 92 a of a rotating body 92 provided in the injection trapping tool 1 b mesh with the rack teeth 90 a. .
- the rotating body 92 has a built-in one-way clutch 93 that allows rotation only in the forward direction.
- the rotating body 92 and the drive shaft 94 rotate in a body, and the pinion teeth 9 of the drive shaft 94 4a is engaged with the rack teeth 2 1d of the rod 21.
- the guide member 90 rotates the rotating body 92 in the forward direction, whereby the rotating body 92 and the drive shaft 94 rotate together in the pushing direction, and the rod 21 is rotated. Moves forward. That is, the pushing means 20 advances to the barrel 51 side.
- the operation of the operation lever 130 is performed by changing the speed reduction ratio between the pinion teeth 92 a and the pinion teeth 94 a of the rotating body 92.
- the deceleration is increased and transmitted to the driving means 20.
- the plunger 52 is pushed and the contrast agent filled in the barrel 51 is injected.
- the operation lever 30 is returned to the original position by the elastic member 95.
- the direction DP in which the plunger 52 is pushed by the pushing means 20 and the rotating body that is the power transmission means 20 are used.
- the central axis O 1, which is the fulcrum of the 94, is engaged with the pinion teeth 94 a of the rotating body 94, which is the point of action, and the rack teeth 21 d provided on the rod 21.
- the angle ⁇ ⁇ between the direction DL connecting O 2 and the angle DL 3 should be 30 ° or more and 150 ° or less, and in particular, 45 ° or more and 135 ° or less, except for friction, etc.
- 50% or more of the force transmitted by the power transmitting means 40a is transmitted to the pushing means 20.
- the angle 0 is 90 °.
- the operation of the operation lever 30 is transmitted to the pushing means 20 by deceleration and increase. That is, in all operations from the initial position of the operation lever 30 to the maximum operation position, the force required to operate the operation lever 30 is smaller than the force transmitted to the pushing means 20 and It is preferable that the speed at which the operation lever 30 is operated is higher than the speed at which the pushing means 20 moves, so that the operation can be easily performed with the force of a finger consistently and the pressure fluctuation can be easily sensed.
- one operation of the operation lever 30 does not enable the entire operation from the start of injection of the initial contrast agent filled in the barrel 51 to the end of injection, but a plurality of operations.
- the operation lever 30 By operating the operation lever 30 a number of times, the entire operation from the start of the injection of the contrast agent filled in the barrel 51 to the end of the injection can be performed.
- the contrast agent can be injected by the operation of grasping the operation lever 30 with the force of a finger.
- the start of injection refers to the timing at which the initial contrast agent filled in the barrel 51 is sent out from the inside of the barrel 51 for the first time
- the end of injection refers to the pushing of the plunger 52 in the barrel 51.
- the injection speed of the contrast agent be 5 ml seconds or less on average.
- the injection speed of the contrast medium is preferably 0.1 m1 second or more on average.
- the injection pressure of the contrast agent is preferably 1 ⁇ 10 6 Pa or less.
- the operating lever 30 can be easily operated with the finger without the barrel 51 being ruptured, and the contrast agent can be injected while the pressure fluctuation can be felt more easily with the fingertip.
- the injection pressure of the contrast agent needs to be higher than the fluid pressure of the injection destination, such as blood pressure or pressure in the ureter.
- the contrast medium injection device is suitable for use in injecting a contrast medium into the urinary tract or venules.
- the third embodiment is a modified example of the holding means 10 and the pushing means 20 of the contrast agent injector of the first or second embodiment.
- FIG. 14 is a side view of the injection assistant in the third embodiment
- FIG. 15 is a perspective view of the injection assistant
- FIG. 16 is a plan view of the injection assistant
- FIG. 18 is a front view of the intermediate plate
- FIG. 19 is a perspective view of the intermediate plate
- FIGS. 20A to 20C are perspective views of the contrast agent injector.
- the injection auxiliary tool 101 of this embodiment includes a holding means 110, a pushing means 120, an operation lever 130, and a power transmission means 140, and the contrast medium injector 1 Assists the 50 injection operation.
- This contrast agent injector 150 includes a barrel 151 and a plunger 152 as shown in FIGS. 20A to 20C.
- the barrel 15 1 is filled with a predetermined amount of a contrast agent, the discharge port 15 1 a of the barrel 15 1 is closed with a cap 1 ′ 5 1 b, and the cap 15 1 b is removed during use. And connect the injection pipes 15 3.
- the barrel 151 is formed of a transparent body such as a transparent resin or transparent glass, and has a flange portion 151c on the opening side.
- a label 155 having a scale 154 indicating the amount of the contrast agent to be filled is adhered to the barrel 151, so that the amount of the contrast agent can be easily confirmed visually.
- Plunger 152 removably engages with a biston 1556 having a head 1556a.
- the head 1 56 a is pushed by the pushing means 1 20, and this push causes the biston 15 6 and the plunger 15 2 to slide on the barrel 15 1 ⁇ , and the outlet 1 of the barrel 15 1 Injection is possible from an injection pipe 15 3 connected to 51 a.
- the contrast agent injector in the state where the pistons 156 are engaged is exchangeably held, so that the work of replacing the contrast agent injector is good.
- This contrast agent injector 150 is for 100ml (Fig. 20A), for 80ml (Fig. 20B, 50ml (Fig. 20C is shown, for example, as shown in Table 2) Although it can be used as a contrast medium, it is particularly preferable to use it as a contrast medium for radiography.
- the present invention is not limited to this, and may be used for injection of a large amount of a contrast agent.
- a drug solution of a contrast agent is shown as a drug, but it can be used as a large-capacity barium sulfate enema, etc. in addition to the above-mentioned contrast agent.
- Barium sulfate enema is injected into the large intestine from the anus and imaged.
- Etc. is preferably used in the medical field.
- the holding means 110 provided on the injection capturing aid 101 includes a receiving part 111 on which the barrel 151 of the contrast agent injector 150 can be placed, and a receiving part 111 The placed palle And a holding portion 112 for holding a part of the rule 151.
- the receiving part 111 is fixed to the guide 102, and the guide 102 is fixed to the handle 103.
- the receiving part 111 and the holding part 112 are shown in FIG. As shown in the figure, the transparent resin cylinder is formed in a shape obtained by halving the cylinder in the axial direction, and the holding portion 112 is shorter than the receiving portion 111.
- One end of the holding portion 1 1 2 can be opened and closed with respect to the receiving portion 1 1 1 with the hinge 1 1 3 as a fulcrum, and the claw 1 1 4 at the other end can be locked with the receiving portion 1 1 1 1 1 1 Engage with 5 and fix.
- the barrel 1 5 1 of the contrast agent injector 150 is placed on the receiving section 1 1 1, and a part of the barrel 1 5 1 is held by the holding section 1 1 2, whereby the contrast agent injector 1 5 0 Can be easily attached and detached, and can be easily and reliably held.
- the receiving part 111 and the holding part 112 are transparent bodies, and the scale of the contrast agent injected into the barrel 150 of the contrast medium injector 150 is checked. The amount can be easily confirmed.
- the holding portion 1 12 has an engaging groove 1 12 b on the pressing surface 1 12 a side, and an elastic body 1 16 is engaged with the engaging groove 1 1 2 b. .
- the elastic body 1 16 presses and holds a part of the barrel 15 1, so that the barrel 15 1 can be reliably pressed and held without damaging the barrel 15 1.
- the elastic body 116 uses a flexible resin pipe, but may be made of rubber or the like. Further, in this embodiment, the elastic body 116 is provided at one place, but may be provided at a plurality of places, or may be provided on the entire pressing surface 112a.
- a flange 1 51 c provided on the opening side of the barrel 15 1 abuts on an end 1 1 a of the receiving portion 1 1 1 and an end 1 1 2 c of the holding portion 1 1 2.
- the movement of the barrel 151 in the pressing direction can be reliably restricted.
- the pushing means 120 provided in the injection capturing aid 101 includes a rod 121, a pressing part 122 attached to a tip part 121a of the rod 121, and a rod 122. And a knob 1 2 3 attached to the head 1 2 1 b of the 1 2 1.
- the rod 122 is movably provided on the guide body 102, and an intermediate plate 124 is interposed between the pressing part 122 and the head 156a of the piston 156. ing. As shown in FIGS. 18 and 19, the intermediate plate 124 has an engaging sliding portion 124a, an engaging holding portion 124b, and a pressing portion 124c. It is integrally formed of resin, but is not limited to this.
- the engaging sliding portions 124a are formed on both sides of the pressing portion 124c, and the notch portions 124a1 are formed on the left and right sides of the guide 102, and the rail portions 102a. And is slidably engaged with the holding means and is engaged and held movably in the pushing direction on the holding means side.
- the engagement holding portion 124b is formed below the pressing portion 124c, and the outer surface 12441 can slide on the guide surface 102b of the guide body 102.
- the head 1556a of the piston 1556 is engaged with and held by the concave groove 124b2.
- An opening 102 c is formed in the guide body 102, and a pressing portion 122 of the rod 121, an intermediate plate 124, and an engagement holding portion 1 of the intermediate plate 124 are formed.
- the head 1 56 a of the piston 1 56 engaged with and held in the 2 4 b does not interfere with the guide body 102.
- the pressing force from the pushing means 120 is transmitted to the plunger 152 via the intermediate plate 124 and the piston 156, and even if the pushing means shifts during operation, the intermediate plate 122 4 restricts the transmission to the plunger 15 2 via the piston 15 6, so that the contrast medium can be injected accurately by manual operation.
- the intermediate plate 124 is engaged and held movably in the pushing direction on the holding means 110 side, that is, the guide body 102 to which the holding means 110 is fixed. By being engaged with and held by the head part 156a, it is possible to smoothly move in the pushing direction.
- the operation lever 130 provided in the injection aid 101 has a grip portion 130a and an operation portion 130b, and the operation portion 130b side has a support shaft on the handle 103. 13 5 is provided to be pivotable. Hold the handle 103 with one thumb and the control lever 130 with the other four fingers, and operate with the manual force pulled toward the handle 103.
- FIG. 21 is a side view showing a modification of the injection assistant according to the third embodiment.
- the injection capturing aid 101a of this modified example has a projection 17 at the receiving portion 170 of the holding means 110a.
- the protrusion 1711 engages with the collar 1.51c of the barrel 151. .
- the plunger 150 is pulled.
- the 2 is pulled in the direction opposite to the pressing direction, it is possible to restrict the barrel 15 1 from being pulled back to the side opposite to the pressing direction.
- FIG. 22 is a schematic configuration diagram of the power transmission means 140a of the fourth embodiment
- FIG. 23 is a schematic configuration diagram showing an operation state of the power transmission means 140a of the fourth embodiment.
- the power transmission means 140a provided in the injection assistant 101 transmits the manual force to the operation lever 130 to the pushing means 120 by increasing the manual force by the principle of leverage.
- the chucking plate 13 2 is fixed to the operation portion 130 b of the operation lever 130.
- the chucking plate 13 2 has a through hole 13 2 a through which the rod 12 1 passes, and with the operation of the operation lever 130, the mouth 1 2 1 is brought into the state shown in FIG. From the front, and it will be in the state as shown in Fig. 23.
- An elastic member (spring) 133 is disposed between the fixed portion 180 of the guide body 102 and the chucking plate 132 while passing through the rod 122.
- the elastic member 133 has a restoring force for returning the chucking plate 132 to the initial state.
- a stopper 134 is provided to prevent the rod 122 from moving backward.
- the stopper 13 4 has a lever 13 4 a which is supported at the upper portion of the handle 10 3 and a lever 13 4 a which is fixed to the guide body 10 2 with a fixing portion 13 4 b. And an elastic member 134c that elastically supports between them, and passes through the rod 122 through the through hole 133a1 of the repeller 134a.
- This stopper ⁇ "1 34 has no effect on the forward movement of the rod 12 1 by pulling the operating lever 13 3 toward the handle 10 3, but the rod 12 1 When a force is applied that pushes in the direction of Increase the frictional resistance to prevent the mouth 1 2 1 from sliding backwards.
- the chucking plate 13 2 moves forward while tilting against the restoring force of the elastic member 133. At this time, the rod 12 1 is chucked by the chucking plate 13 2 and moves forward, and the plunger 15 1 of the contrast medium injector 15 As a result of being pressed through the plate 124, the chemical solution is discharged from the outlet port 151a of the nozzle 1515.
- the barrel 15 1 of the contrast agent injector 150 is mounted and held on the holding means 110, and the operation lever 130 is manually operated.
- this manual force is transmitted to the pushing means 120 by the power transmission means 140, and the pushing means 120 pushes the plunger 15 2 of the contrast agent injector 150 to the intermediate plate 1 24,
- the pistons 156 By pushing through the pistons 156, the drug solution of the contrast agent injector 150 can be injected, and even when a high-viscosity contrast agent is injected at high pressure, manual operation is required. Injection can be performed quickly and easily, and for example, it is possible to know whether or not the injection needle is correctly inserted into the blood vessel of the patient, the injection speed, and the like with the sense of a finger of the hand.
- the barrel of the contrast agent injector is held by the injection assistant, and the operation of the operation lever is transmitted to the pushing means by deceleration by the principle of leverage.
- the injection operation can be performed with the force of a finger, and when the injection needle is pierced through the patient's blood vessel, Even if the patient's blood vessel contracts during the injection or the tube becomes blocked due to the injection of the contrast agent, the pressure fluctuation caused by the In particular, it can be felt with a sharp finger and the injection operation can be stopped or slowed down. Therefore, it is suitable for injecting a contrast agent.
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Abstract
An injection auxiliary tool detachably holding a contrast medium injector capable of injecting the contrast medium charged in a barrel by the pressing movement of a plunger and supporting the injecting operation of the held contrast medium injector, characterized by comprising a holding means holding the barrel, a pressingly moving means pressingly moving the plunger, an operating lever allowed to be operated by the fingers of a hand, and a power transmission means transmitting the operation of the operating lever to the pressingly moving means after reducing a speed and increasing a power by the principle of leverage.
Description
明 細 書 注入捕助具 技術分野 Description Injection / capture aid Technical field
この発明は、 造影剤を注入するのに適した注入補助具に関する。 背景技術 The present invention relates to an injection aid suitable for injecting a contrast agent. Background art
従来、 医療用の分野において、 造影剤を血管等に注入する場合、 点滴、 注射器 、 または注射器をセッ トした自動注入装置を用いて注入していた。 この注射器で は、 注射針を患者の血管に突き刺し、 手で押す操作により造影剤を血管に注入し ている。 また、 自動注入装置を用いる場合には、 機械的なシリンジ駆動機構を用 いて注入するものがあり (例えば、 特開 2 0 0 1— 2 24 6 8 5号公報 (対応公 報: 米国公開公報第 2 00 1 - 2 1 8 2 3号公報))、 モータで造影剤を一定速度 で送り出すものがあり (例えば、 特開平 6— 7 440号公報 (対応公報:米国特 許公報第 5 2 6 9 7 6 2号公報))、 これらの装置では注射器をセッ トし、 この注 射器に接続したチューブの先端の注射針を患者の血管に突き刺し、 装置により 自 動的に押す操作を行なうことにより造影剤を血管に注入している。 Conventionally, in the medical field, when a contrast medium is injected into a blood vessel or the like, the injection has been performed using a drip, a syringe, or an automatic injection device in which a syringe is set. In this syringe, a contrast medium is injected into a blood vessel by the operation of piercing a patient's blood vessel with a syringe needle and pushing by hand. In the case where an automatic injection device is used, injection may be performed using a mechanical syringe drive mechanism (for example, see Japanese Patent Application Laid-Open No. 2001-224658 (corresponding publication: US Published Patent Application There is a method in which a contrast agent is sent out at a constant speed by a motor (for example, Japanese Patent Application Laid-Open No. 6-7440 (corresponding publication: US Patent Publication No. 5226)). In these devices, a syringe is set, the injection needle at the tip of the tube connected to the injector is pierced into the patient's blood vessel, and the device is automatically pushed. The contrast medium is injected into the blood vessel.
また、 手動の造影剤の注入補助具として、 図 24に示すような C a r d i o V a s c u 1 a r I n n o v a t i o n s (登録商標)社の O Z P a 1 m I n j e c t o r (登録商標) がある。 しかし、 この装置は、 1回の操作でバレルに充填 された造影剤を一度に一気に注入するための装置である。 そして、 手の指で操作 できるものではなく、 その底部を手術台に固定し、 操作ペダルを手の平でかなり の強い力で押して操作する必要がある。 As a manual contrast medium injection aid, there is an OZPa1mInjector (registered trademark) of CardioVascu1arInnovavatios (registered trademark) as shown in FIG. However, this device is a device for injecting the contrast agent filled in the barrel in one operation at a stroke. It is not possible to operate with the fingers of the hand, but it is necessary to fix the bottom of the table to the operating table and press the operation pedal with the palm of your hand with considerable force.
また、 造影剤の注入捕助具ではないが多数の動物に対し手動で一定量の皮下注 射を行う装置が、 例えば、 米国特許公報第 3 1 1 0 3 1 0号公報、 米国特許公報 第 3 5 1 7 6 6 8号公報に記載されている。 また、 手動で皮下にペレツ トを埋め 込む装置が、 例えば、 米国特許公報第 2 8 8 3 9 84号公報に記載されている。 また、 手動で医療用パスタを注入する装置が、 例えば、 米国特許公報第 4 2 7 6
8 7 8号公報に記載されている。 In addition, a device for manually injecting a fixed amount of subcutaneous injection into a large number of animals, which is not a contrast medium injection capturing device, is disclosed in, for example, U.S. Pat. No. 3,110,310 and U.S. Pat. It is described in Japanese Patent Publication No. An apparatus for manually implanting a subcutaneous pellet is described in, for example, US Pat. No. 2,883,984. Also, a device for manually injecting medical pasta is disclosed in, for example, US Pat. It is described in Japanese Patent Publication No. 8778.
このように、 従来、 造影剤を血管に注入する場合、 注射器、 点滴または自動注 射装置を用いて注入していたが、 点滴または自動注射装置を用いて注入した際、 以下の問題がある。 As described above, in the past, when a contrast medium was injected into a blood vessel, the injection was performed using a syringe, a drip or an automatic injection device. However, when the contrast medium was injected using a drip or an automatic injection device, the following problems were encountered.
①患者の血管を突き抜けて注射針を刺してしまった場合でも、 造影剤が注入さ れ続け、 注射箇所を中心に組織にダメージを与える問題。 (1) Even if a needle is pierced through a patient's blood vessel, the contrast agent continues to be injected and damages tissue mainly at the injection site.
②造影剤の注入により、 患者の血管が注入途中で収縮した場合でも、 造影剤が 注入され続け、 注射箇所を中心に組織にダメージを与える問題。 (2) Even if the patient's blood vessels contract during injection due to the injection of the contrast agent, the contrast agent continues to be injected, causing tissue damage mainly at the injection site.
③自動注入装置を用いて注入する際は、 更に、 注射器と注射針との間のチュー プを患者が握ったり、 患者が動いて潰したり して、 チューブが塞がった場合でも (3) When injecting using an automatic infusion device, even if the tube is blocked due to the patient gripping the tube between the syringe and the needle or the patient moving and crushing.
、 注射動作を続けようとして、 注射器のバレルを破裂させてしまう問題。 The problem of bursting the barrel of the syringe while trying to continue the injection operation.
このような問題を回避するためには、 注射器を手で操作して造影剤を注入すれ ばよいが、 造影剤は、 注入する容量が大きいため、 通常の治療薬の注射器と異な り、 断面積の大きい注射器を用いる必要がある。 In order to avoid such problems, it is sufficient to inject the contrast medium by operating the syringe by hand.However, the contrast medium has a large volume to be injected, and unlike a conventional therapeutic drug syringe, the cross-sectional area is different. It is necessary to use a large syringe.
そして、 度が高いため、 注射器を手で操作するには、 指で押すのではなく手 の平でかなりの力で押す必要があり、 連続して何度も撮影する場合には、 注射器 を操作する撮影医、 撮影技師の手の平に痣ができるほどである。 そのために、 手 の平の圧力感覚が疲弊してしまう と、 患者の血管が注入途中で収縮した場合や、 チューブが塞がった場合の圧力の変動を感じにく くなる問題がある。 And, because of the high degree, to operate the syringe by hand, it is necessary to press with a considerable force on the palm of the hand rather than with your finger, and if you want to shoot many times continuously, operate the syringe The physician and the technologist who do it can bruise on the palm of the photographer. For this reason, if the palm pressure sensation is exhausted, there is a problem that it becomes difficult to feel the fluctuation of pressure when the patient's blood vessel contracts during injection or when the tube is closed.
そこで、 この発明は、 上記問題を解消し、 自動注入装置のような制御装置が不 要で、 手の平でかなりの力で押す必要がなく、 指の力で注射動作でき、 かつ、 患 者の血管を突き抜けて注射針を刺してしまった場合や、 造影剤の注入により、 患 者の血管が注入途中で収縮した場合や、 チューブが塞がった場合でも、 それによ る圧力変動を、 圧力感覚が特に鋭い手の指で感じることができ注入動作を中止ま たはゆつく り させることができる手動で動作する注入捕助具を提供することを目 的とする。 発明の開示 Thus, the present invention solves the above-mentioned problems, eliminates the need for a control device such as an automatic injection device, does not need to press the hand with a great deal of force, can perform an injection operation with the power of a finger, and achieves a patient's blood vessel If the patient's blood vessel contracts during injection or the tube is blocked due to the injection of a needle through the needle or the injection of a contrast agent, the pressure fluctuation caused by the It is an object of the present invention to provide a manually operated injection trap which can be felt with a sharp finger and can stop or slow down the injection operation. Disclosure of the invention
前記課題を解決し、 かつ目的を達成するために、 この発明は、 以下のように構
成した。 In order to solve the above problems and achieve the object, the present invention has the following structure. Done.
本発明の注入捕助具は、 パレルに充填された造影剤をプランジャの押動で注入 可能な造影剤注入器を着脱自在に保持し、 この保持した前記造影剤注入器の注入 動作を捕助する注入捕助具であって、 The injection capturing aid according to the present invention detachably holds a contrast agent injector capable of injecting a contrast agent filled in a barrel by pushing a plunger, and assists an injection operation of the held contrast agent injector. Injection trapping tool,
前記バレルを保持する保持手段と、 Holding means for holding the barrel,
前記ブランジャを押動する押動手段と、 Pushing means for pushing the plunger,
手の指によつて操作可能な操作レバーと、 An operation lever that can be operated by a finger of a hand,
前記操作レバーの操作を梃子の原理により前記押動手段へ減速增カして伝達す る動力伝達手段とを有することを特徴とする。 And a power transmitting means for transmitting the operation of the operation lever to the pushing means by deceleration based on the principle of leverage.
この注入補助具によれば、 造影剤注入器のバレルを注入補助具に保持し、 操作 レバーの操作を梃子の原理により押動手段へ減速增力して伝達し、 押動手段によ りバレルのブランジャを押動し、 バレルに充填された造影剤を注入することで、 指の力で注入動作ができ、 かつ、 患者の血管を突き抜けて注射針を刺してしまつ た場合や、 造影剤の注入により、 患者の血管が注入途中で収縮した場合や、 チュ ープが塞がった場合でも、 それによる圧力変動を、 圧力感覚が特に鋭い手の指で 感じることができ注入動作を中止またはゆつく り させることができる。 また、 本発明の注入補助具は、 前記バレルに充填された当初の造影剤の容量が 4 0 m l以上であることが好ましい。 According to this injection aid, the barrel of the contrast agent injector is held by the injection aid, and the operation of the operation lever is transmitted to the pushing means by deceleration with the principle of leverage, and the barrel is pushed by the pushing means. By pushing the plunger and injecting the contrast agent filled in the barrel, the injection operation can be performed with the power of a finger, and when the injection needle is pierced through the patient's blood vessel, Even if the patient's blood vessels contract during the injection or the tube is blocked, the pressure fluctuations caused by the injection can be felt with the fingers with particularly sharp pressure, and the injection operation is stopped or stopped. It can be made. Further, in the injection assistant of the present invention, it is preferable that the initial volume of the contrast agent filled in the barrel is 40 ml or more.
この注入補助具によれば、 バレルに充填された当初の造影剤の容量が 4 0 m l 以上であるので、 造影剤撮影に要求される造影剤を注射しつつ、 プランジャのス トローク範囲が、 適切なス トロークの範囲内であっても、 自動注入装置のような 制御装置が不要で、 手の平でかなりの力で押す必要がなく、 指の力で注射動作が できる。 また、 本発明の注入捕助具は、 前記バレルに充填された当初の造影剤の容量が 2 5 0 m l以下であることが好ましい。 According to this injection aid, since the initial volume of the contrast agent filled in the barrel is 40 ml or more, the stroke range of the plunger can be appropriately adjusted while injecting the contrast agent required for contrast agent imaging. A control device such as an automatic injection device is not required even within the range of the stroke, and there is no need to press with a great deal of force on the palm, and the injection operation can be performed with the force of a finger. In the injection / capture aid of the present invention, it is preferable that the initial volume of the contrast agent filled in the barrel is 250 ml or less.
この注入捕助具によれば、 バレルに充填された当初の造影剤の容量が 2 5 0 m 1以下であるので、 造影剤撮影に要求される造影剤を注射しつつ、 プランジャの
ス トローク範囲が、 適切なス トロークの範囲内であっても、 自動注入装置のよう な制御装置が不要で、 手の平でかなりの力で押す必要がなく、 指の力で注射動作 ができる。 また、本発明の注入捕助具は、前記バレルの断面積が 3 c m2以上であることが 好まレぃ。 According to this injection aid, since the initial volume of the contrast agent filled in the barrel is 250 m1 or less, the injection of the contrast agent required for contrast agent imaging is performed while Even if the stroke range is within the appropriate stroke range, there is no need for a control device such as an automatic injection device, and there is no need to press with a great deal of force on the palm, and the injection operation can be performed with the power of a finger. In the injection / capture aid of the present invention, the barrel preferably has a cross-sectional area of 3 cm 2 or more.
この注入補助具によれば、 手動によっても、 充分な注入速度を確保しつつ、 自 動注入装置のような制御装置が不要で、 手の平でかなりの力で押す必要がなく、 指の力で注射動作ができる。 また、本発明の注入捕助具は、前記バレルの断面積が 2 0 c m2以下であること が好ましい。 According to this injection aid, even with manual operation, a sufficient injection speed is ensured, and a control device such as an automatic injection device is not required. Can work. In the injection / capture aid of the present invention, the barrel preferably has a cross-sectional area of 20 cm 2 or less.
この注入補助具によれば、 手動により押動しやすい力ですみ、 自動注入装置の ような制御装置が不要で、 手の平でかなりの力で押す必要がなく、 指の力で注射 動作ができる。 また、 本発明の注入捕助具は、 前記バレルの先端から前記動力伝達手段の挺子 の支点までの距離が 4 0 c m以下であることが好ましい。 According to this injection aid, only the force that can be pushed manually is sufficient, there is no need for a control device such as an automatic injection device, and there is no need to press with a great deal of force on the palm, and the injection operation can be performed with the force of a finger. In the injection / capture aid of the present invention, it is preferable that a distance from a tip of the barrel to a fulcrum of a power transmission means is 40 cm or less.
この注入捕助具によれば、 押動手段によりバレルのプランジャを押動する際の プレが生じにく く、 また、 手に取って取り回しやすく、 手に持っての操作が容易 である。 また、 本発明の注入捕助具は、 前記バレルの先端から前記動力伝達手段の挺子 の支点までの距離が 5 c m以上であることが好ましい。 According to this injection trapping device, a press when the plunger of the barrel is pushed by the pushing means is unlikely to occur, and it is easy to take and handle with the hand, and the operation with the hand is easy. In the injection / capture aid according to the present invention, it is preferable that a distance from a tip of the barrel to a fulcrum of a power transmission means is 5 cm or more.
この注入捕助具によれば、 バレルに充填された当初の造影剤の容量が充分大き くても、 造影剤注入器の着脱が容易である。 また、 本発明の注入補助具は、 前記動力伝達手段が、 According to this injection aid, even if the initial volume of the contrast agent filled in the barrel is sufficiently large, the contrast agent injector can be easily attached and detached. Also, in the injection assistant of the present invention, the power transmission means may be:
前記操作レバーの操作により、 挺子の支点を中心に回動する回動部材を有し、
前記回動部材が押動方向に回動すると、 前記押動手段が前記バレル側に前進する ものであることが好ましい。 なお、 前記回動都材は、 操作レバー自体であっても よいし、 操作レバーと一体に回動する部材であってもよいし、 操作レパーとは別 動して回動する部材であっても良い。 A rotating member that rotates around a fulcrum of the pivot by operating the operating lever; It is preferable that, when the rotating member rotates in the pushing direction, the pushing means advances to the barrel side. The turning member may be the operation lever itself, a member that turns integrally with the operation lever, or a member that turns separately from the operation lever. Is also good.
また、 前記回動部材の作用点からの作用により、 直接又は間接に、 前記押動手 段が前記パレル側に前進するものであることが好ましい。 Further, it is preferable that the pushing means advances directly or indirectly to the barrel side by an action from an action point of the rotating member.
この住入補助具によれば、 簡単な構造で押動することができる。 また、 本癸明の注入捕助具は、 前記挺子の支点から前記作用点までの距離が 0 . 5 c m以上であることが好ましい。 According to this housing aid, it can be pushed with a simple structure. Further, in the injection and trapping tool of the present invention, it is preferable that the distance from the fulcrum of the roller to the point of application is 0.5 cm or more.
この注入補助具によれば、 一度の操作で押動手段が押動する距離を充分確保で き、 操作レバーの操作頻度が少なくて済み、 操作性が良い。 また、 本発明の注入捕助具は、 前記挺子の支点から前記作用点までの距離が 3 c m以下であることが好ましい。 According to this injection aid, a sufficient distance for the pushing means to be pushed by one operation can be sufficiently secured, the operation frequency of the operating lever can be reduced, and the operability is good. Further, in the injection / capture aid according to the present invention, it is preferable that a distance from a fulcrum of the roller to the point of application is 3 cm or less.
この注入捕助具によれば、 操作レバーを操作するのに必要な力を小さくでき、 指の力で動作できる。 そして、 指で操作すれば、 造影剤注入における異常発生の 際の圧力変動を、 圧力間隔が特に鋭い手の指で感じることができる。 また、 本発明の注入捕助具は、 前記操作レバーの当初位置から最大操作位置に 至るまでの間の操作全てにおいて、 前記押動手段によって前記プランジャを押動 する方向と、 前記動力伝達手段の挺子の支点と前記作用点とを結ぶ方向との間の 角度が、 3 0 ° 以上 1 5 0 ° 以下であることが好ましい。 According to this injection trap, the force required to operate the operation lever can be reduced, and the operation can be performed with the force of a finger. When operated with a finger, the pressure fluctuation at the time of occurrence of an abnormality in the injection of the contrast medium can be sensed with a finger having a particularly sharp pressure interval. Further, in the injection capturing aid of the present invention, in the entire operation from the initial position of the operation lever to the maximum operation position, a direction in which the plunger is pushed by the pushing means, It is preferable that the angle between the fulcrum of the roller and the direction connecting the action point is 30 ° or more and 150 ° or less.
この注入捕助具によれば、 操作レバーの当初位置から最大操作位置に至るまで の間の操作全てにおいて、 押動手段によってプランジャを押動する方向と、 動力 伝達手段の挺子の支点と前記作用点とを結ぶ方向との間の角度が、 3 0 ° 以上 1 5 0 ° 以下であり、 摩擦などを除いて、 動力伝達手段によって伝達される力の所 定以上を押動手段に伝達することになり、 好ましい。
また、 本発明の注入補助具は、 前記操作レバーの当初位置から最大操作位置に 至るまでの間の操作全てにおいて、 前記操作レバ一の操作を前記押動手段へ減速 增カして伝達するものであることが好ましい。 According to this injection trap, in all operations from the initial position of the operation lever to the maximum operation position, the direction in which the plunger is pushed by the pushing means, the fulcrum of the power transmission means, The angle between the direction connecting the point of action and the direction is 30 ° or more and 150 ° or less. Except for friction, etc., the force transmitted by the power transmission means is transmitted to the pushing means by more than the specified value. That is preferable. Further, the injection assisting device of the present invention transmits the operation of the operation lever to the pushing means in a decelerated manner during all operations from the initial position of the operation lever to the maximum operation position. It is preferable that
この注入捕助具によれば、 操作レバーの当初位置から最大操作位置に至るまで の間の操作全てにおいて、 操作レバーの操作を押動手段へ減速增力して伝達する ものであり、 操作レバーの操作に要する力が、 押動手段に伝達される力より小さ くかつ、 操作レバーを操作する速度が、 押動手段が移動する速度より大きいこと が、 一貫して指の力で容易に操作でき、 圧力変動も感じやすく好ましい。 また、 本発明の注入補助具は、 1回の前記操作レバーの操作により前記バレル に充填された当初の造影剤の注入開始から注入終了までの全てをできるものでは なく、 複数回の前記操作レバーの操作により前記バレルに充填された当初の造影 剤の注入開始から注入終了までの全てをできるも (^であることが好ましい。 この注入捕助具によれば、 複数回の操作レバーの操作によりバレルに充填され た当初の造影剤の注入開始から注入終了までの全てをできるものであり、 操作レ パーを指の力で握る操作で、 造影剤を注入できる。 また、 本発明の注入捕助具は、 前記保持手段により前記バレルを保持した状態 で、 前記バレルを視認可能であることが好ましい。 According to this injection trap, in all operations from the initial position of the operation lever to the maximum operation position, the operation of the operation lever is transmitted to the pushing means by decelerating force. The force required for the operation of the push lever is smaller than the force transmitted to the pushing means, and the speed at which the operating lever is operated is faster than the speed at which the pushing means moves. It is preferable because pressure fluctuation is easily felt. In addition, the injection assisting tool of the present invention is not capable of performing all the operations from the start of injection of the initial contrast agent filled in the barrel to the end of injection by one operation of the operation lever, and a plurality of operations of the operation lever. The operation from the start to the end of the injection of the initial contrast agent filled in the barrel can be performed by the operation (preferably, ^. According to this injection trapping device, the operation lever can be operated a plurality of times. It can perform everything from the start of the injection of the contrast agent initially filled in the barrel to the end of the injection, and can inject the contrast agent by grasping the operation rep with finger power. Preferably, the tool allows the barrel to be viewed in a state where the barrel is held by the holding means.
この注入補助具によれば、 保持手段によりパレルを保持した状態で、 パレルを 視認可能であり、 操作者は、 操作レバーの操作中であっても、 造影剤注入器のパ レルに付された目盛等を見ることができ、 これによつて、 充填される造影剤の液 量を容易に確認することができる。 また、 本発明の注入捕助具は、 前記造影剤を平均 5 m 1 _ 秒以下の注入速度で 注入するためのものであることが好ましい。 According to this injection aid, the barrel can be visually recognized while holding the barrel by the holding means, and the operator can attach the barrel to the barrel of the contrast agent injector even while operating the operation lever. The scale and the like can be seen, whereby the amount of the contrast agent to be filled can be easily confirmed. In addition, it is preferable that the injection and capture aid of the present invention is for injecting the contrast agent at an injection speed of 5 m 1 s or less on average.
この注入捕助具によれば、 造影剤を平均 5 m 1ノ秒以下の注入速度で注入する ためのものであり、 より適切な造影撮影ができる。
また、 本発明の注入捕助具は、 前記造影剤を 1 X I 0 6 P a以下の注入圧力で注 入するためのものであることが好ましい。 According to the injection capturing aid, the contrast medium is injected at an average injection speed of 5 m1 ns or less, and more appropriate contrast imaging can be performed. Also, injection Tosukegu of the present invention, it is preferable that the contrast agent is for entering Note in 1 XI 0 6 P a following injection pressure.
この注入捕助具によれば、造影剤を 1 X 1 0 6 P a以下の注入圧力で注入するた めのものであり、 バレルが破裂することなく操作レバーを手の指で容易に操作す ることができ、 また、 指先で圧力変動をより感じることができつつ、 造影剤を注 入できる。 また、 造影剤の注入圧力は、 血圧や尿管内の圧力など注入先の液圧以 上である必要がある。 また、 本発明の注入捕助具は、 前記造影剤を尿路または小静脈に注入するため のものであることが好ましい。 According to this injection capturing auxiliary tool, is of order to inject contrast at 1 X 1 0 6 P a following injection pressure, to easily operate the operation lever with fingers without barrel exploding The contrast agent can be injected while the pressure fluctuation can be sensed with the fingertip. Also, the injection pressure of the contrast agent must be higher than the fluid pressure of the injection destination, such as blood pressure or pressure in the ureter. Further, it is preferable that the injection / capture aid of the present invention is for injecting the contrast agent into a urinary tract or a small vein.
この注入捕助具によれば、 造影剤を尿路または小静脈に注入するためのものに 用いることに適する。 また、 本発明の注入補助具は、 前記操作レバーとともに人の手により握ること ができる位置に、 ハンドルが設けられていることが好ましい。 The injection trap is suitable for use in injecting a contrast medium into the urinary tract or venules. Further, it is preferable that the injection assistant of the present invention is provided with a handle at a position where it can be grasped by a human hand together with the operation lever.
この注入補助具によれば、 操作レバーとともに人の手により握ることができる 位置に、 ハンドルが設けられ、 指を握る動作により操作レバーを操作することが できる。 また、 本発明の注入捕助具は、 前記操作レバーと前記ハンドルを握ることによ り持ち上げ、 操作することが可能であることが好ましい。 According to this injection aid, a handle is provided at a position where it can be grasped by a human hand together with the operation lever, and the operation lever can be operated by the operation of grasping a finger. Further, it is preferable that the injection / capture aid of the present invention can be lifted and operated by grasping the operation lever and the handle.
この注入捕助具によれば、 操作レバーと前記ハンドルを握ることにより持ち上 げ、 操作することが可能であり、 操作者がどのような体勢であっても、 手の指で 容易に操作でき、 造影剤注入時の圧力変動を容易に感じることができる。 また、 本発明の注入捕助具は、 前記ハンドルと前記保持手段とが一体になつた ビストル型であることが好ましい。 According to this injection capturing aid, it is possible to lift and operate by grasping the operation lever and the handle, and the operator can easily operate with his / her finger in any posture. However, the pressure fluctuation during injection of the contrast agent can be easily felt. Further, it is preferable that the injection / capture aid of the present invention is a bistor type in which the handle and the holding means are integrated.
この注入捕助具によれば、 ハンドルと保持手段とが一体になつたビス トル型で あり、 簡単に操作することができる。
また、 本発明の注入捕助具は、 前記保持手段が、 前記造影剤注入器の前記パレ ルが載置可能である受部と、 開閉自在で閉じ.た時、 前記受部に載置された前記パ レルの一部を保持する保持部とを有することが好ましい。 According to this injection trap, the handle and the holding means are of a bistor type integrated with each other, and can be easily operated. Further, in the injection capturing aid of the present invention, when the holding means is openably and closably closed with a receiving portion on which the pallet of the contrast agent injector can be mounted, the holding device is mounted on the receiving portion. And a holding part for holding a part of the barrel.
この注入補助具によれば、 造影剤注入器のパレルを受部に載置し、 このバレル の一部を保持部で保持することで、 造影剤注入器の着脱が容易で、 しかも簡単か つ確実に保持することができる。 また、 本発明の注入捕助具は、 前記保持部が、 透明体であることが好ましい。 この注入捕助具によれば、 保持部が透明体であり、 造影剤注入器のバレルに付 された目盛等を見て、 充填される造影剤の液量を容易に確認することができる。 また、 本発明の注入捕助具は、 前記保持部が、 前記バレルの一部を押圧保持す る弾性体を有することが好ましい。 According to this injection aid, the barrel of the contrast agent injector is placed on the receiving portion, and a part of the barrel is held by the holding portion, so that the attachment and detachment of the contrast agent injector is easy and simple. It can be securely held. Further, in the injection / capture aid of the present invention, it is preferable that the holding portion is a transparent body. According to this injection trap, the holding portion is a transparent body, and the amount of the contrast agent to be filled can be easily confirmed by checking the scale or the like provided on the barrel of the contrast agent injector. In the injection and capture aid of the present invention, it is preferable that the holding portion has an elastic body that presses and holds a part of the barrel.
この注入捕助具によれば、 保持部がバレルの一部を押圧保持する弾性体を有す ることで、 バレルを傷付けることなく、 確実に押圧して保持することができる。 また、 本発明の注入捕助具は、 前記造影剤注入器のバレルが、 前記バレルの開 口側に鍔部を有し、 この鍔部を前記保持部に当接させることが好ましい。 According to this injection trap, since the holding section has the elastic body that presses and holds a part of the barrel, the barrel can be reliably pressed and held without damaging the barrel. In addition, in the injection capturing aid of the present invention, it is preferable that the barrel of the contrast agent injector has a flange on the opening side of the barrel, and the flange is brought into contact with the holding portion.
この注入捕助具によれば、 バレルの鍔部を保持部に当接させることで、 バレル の押圧方向の移動を確実に規制することができる。 また、 本発明の注入捕助具は、 受部が、 突起部を有し、 この突起部に前記鍔部 を係合させても良い。 また、 本発明の注入捕助具は、 前記造影剤注入器が、 そのプランジャに頭部を 有するビス トンが係合されており、 前記押動手段の押圧部と前記ビス トンの頭部 との間に中間プレートを介在させることが好ましい。 According to this injection trap, the movement of the barrel in the pressing direction can be reliably restricted by bringing the flange of the barrel into contact with the holding portion. In the injection / capture aid of the present invention, the receiving portion may have a projection, and the flange may be engaged with the projection. Further, in the injection trapping tool of the present invention, the contrast agent injector has a plunger having a head having a head engaged with the plunger, and the pressing part of the pressing means and the head of the biston are connected to each other. It is preferable to interpose an intermediate plate between them.
この注入捕助具によれば、 押動手段からの押圧力が中間プレート、 ピス トンを
介してプランジャに伝達され、 操作時に押動手段側にずれが生じても中間プレー トによってビス トンを介してプヲンジャに伝達されることが規制され、 人手によ る操作で正確な造影剤の注入ができる。 また、 本発明の注入捕助具は、 前記中間プレートが、 前記保持手段側に押動方 向に移動可能に係合保持される係合摺動部と、 前記ピス トンの頭部を係合保持す る係合保持部とを有することが好ましい。 According to this injection trap, the pressing force from the pressing means moves the intermediate plate and the piston. The intermediate plate regulates the transmission to the plunger via the biston even if there is a shift on the pushing means side during operation. Can be. In addition, the injection capturing aid of the present invention may be configured such that the intermediate plate is engaged with an engagement sliding portion which is engaged and held movably in a pushing direction toward the holding means, and a head of the piston. It is preferable to have an engagement holding portion for holding.
この注入補助具によれば、 中間プレートは、 保持手段側に押動方向に移動可能 に係合保持され、 プランジャと係合したビス トンの頭部を係合保持することで、 円滑に押動方向に移動することができる。 また、 本発明の注入補助具は、 造影剤注入器のバレルが、 透明体であり、 充填 される造影剤の液量を示す目盛を有することが好ましい。 According to this injection aid, the intermediate plate is movably engaged and held in the pushing direction on the holding means side, and is smoothly pushed and moved by engaging and holding the head of the biston engaged with the plunger. Can move in any direction. Further, in the injection assistant of the present invention, it is preferable that the barrel of the contrast agent injector is a transparent body and has a scale indicating the amount of the contrast agent to be filled.
この注入補助具によれば、 造影剤注入器のバレルが透明体であり、 充填される 造影剤の液量を示す目盛を有することで、 目視で容易に造影剤の液量を確認する ことができる。 また、 本発明の注入補助具は、 造影剤は、 硫酸バリ ウム注腸剤を含むことが好 ましい。 According to this injection aid, since the barrel of the contrast agent injector is a transparent body and has a scale indicating the amount of the contrast agent to be filled, the amount of the contrast agent can be easily visually checked. it can. In the injection aid of the present invention, the contrast agent preferably contains a barium sulfate enema.
この注入捕助具によれば、 造影剤は、 硫酸バリ ウム注腸剤も含み、 医療用の分 野において好ましく用いられる。 図面の簡単な説明 According to the injection capturing device, the contrast agent also includes a barium sulfate enema, and is preferably used in the medical field. BRIEF DESCRIPTION OF THE FIGURES
図 1は、 実施形態 1における注入捕助具の側面図、 FIG. 1 is a side view of the injection trap according to the first embodiment,
図 2は、 注入補助具の斜視図、 Figure 2 is a perspective view of the injection aid,
図 3は、 注入捕助具の平面図、 Figure 3 is a plan view of the injection trap,
図 4は、 動力伝達手段の概略構成図、 Figure 4 is a schematic diagram of the power transmission means,
図 5は、 動力伝達手段の作動状態を示す概略構成図、 FIG. 5 is a schematic configuration diagram showing an operation state of the power transmission means,
図 6は、 操作レバーによる操作前の斜視図、
図 7は、 操作レパーによる操作時の斜視図、 — Fig. 6 is a perspective view before operation by the operation lever. Fig. 7 is a perspective view when operating with the operation lever.
図 8は、 保持手段を示す斜視図、 FIG. 8 is a perspective view showing the holding means,
図 9は、 バレル保持部の平面図、 Figure 9 is a plan view of the barrel holder,
図 1 0は、 プランジャ押動状態を示す断面図、 FIG. 10 is a cross-sectional view showing a plunger pushing state.
図 1 1 A ~ 1 1 Cは、 造影剤注入器の側面図、 FIGS. 11A to 11C are side views of the contrast agent injector,
図 1 2は、 実施形態 1における注入補助具の変形例を示した側面図、 FIG. 12 is a side view showing a modified example of the injection assistant according to the first embodiment,
図 1 3は、 実施形態 2における注入捕助具の動力伝達手段を示す図、 FIG. 13 is a diagram showing a power transmission means of the injection trap according to the second embodiment,
図 1 4は、 実施形態 3における注入捕助具の側面図、 FIG. 14 is a side view of the injection trap according to the third embodiment,
図 1 5は、 実施形態 3における注入補助具の斜視図、 FIG. 15 is a perspective view of an injection aid according to the third embodiment,
図 1 6は、 実施形態 3における注入捕助具の平面図、 FIG. 16 is a plan view of the injection trap according to the third embodiment,
図 1 7は、 実施形態 3における保持手段を示す斜視図、 FIG. 17 is a perspective view showing a holding unit in the third embodiment,
図 1 8は、 実施形態 3における中間プレートの正面図、 FIG. 18 is a front view of the intermediate plate according to the third embodiment,
図 1 9は、 実施形態 3における中間プレートの斜視図、 FIG. 19 is a perspective view of the intermediate plate according to the third embodiment,
図 2 0 A ~ 2 0 Cは、 実施形態 3における造影剤注入器の斜視図、 20A to 20C are perspective views of the contrast agent injector according to the third embodiment,
図 2 1は、 実施形態 3における注入補助具の変形例を示した側面図、 FIG. 21 is a side view showing a modified example of the injection assistant according to the third embodiment,
図 2 2は、 実施形態 4における動力伝達手段の概略構成図、 FIG. 22 is a schematic configuration diagram of a power transmission unit according to the fourth embodiment,
図 2 3は、 実施形態 4における動力伝達手段の作動状態を示す概略構成図、 図 2 4は、 従来の手動の造影剤の注入補助具を示す図である。 発明を実施するための最良の形態 FIG. 23 is a schematic configuration diagram showing an operation state of the power transmission means in the fourth embodiment, and FIG. 24 is a diagram showing a conventional manual contrast medium injection aid. BEST MODE FOR CARRYING OUT THE INVENTION
以下、 この発明の注入補助具の実施の形態を図面に基づいて詳細に説明するが 、 この発明は、 この実施の形態に限定されない。 また、 この発明の実施の形態は 、 発明の最も好ましい形態を示すものであり、 この発明の用語の意義は、 これに 限定されない。 Hereinafter, an embodiment of the injection assistant of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to this embodiment. Further, the embodiments of the present invention show the most preferable embodiments of the present invention, and the meaning of the terms of the present invention is not limited thereto.
「実施形態 1 J `` Embodiment 1 J
図 1は実施形態 1における注入捕助具の側面図、 図 2は注入補助具の斜視図、 図 3は注入補助具の平面図、 図 4は動力伝達手段の概略構成図、 図 5は動力伝達 手段の作動状態を示す概略構成図、 図 6は操作レバーによる操作前の斜視図、 図
7は操作レパ一による操作時の斜視図、 図 8は保持手段を示す斜視図、 図 9はパ レル保持部の平面図、 図 1 0はプランジャ押動状態を示す断面図、 図 1 1 A〜 l 1 Cは造影剤注入器の側面図である。 Fig. 1 is a side view of the injection and trapping device in the first embodiment, Fig. 2 is a perspective view of the injection and injection device, Fig. 3 is a plan view of the injection and injection device, Fig. 4 is a schematic configuration diagram of power transmission means, and Fig. FIG. 6 is a schematic configuration diagram showing an operating state of the transmission means. FIG. 6 is a perspective view before operation by an operation lever. 7 is a perspective view at the time of operation by the operation lever, FIG. 8 is a perspective view showing the holding means, FIG. 9 is a plan view of the barrel holding portion, FIG. 10 is a cross-sectional view showing a plunger pushing state, FIG. A to l 1 C are side views of the contrast agent injector.
この実施の形態の注入捕助具 1は、 保持手段 1 0と、 押動手段 2 0と、 操作レ パー 3 0と、 動力伝達手段 40とを備え、 造影剤注入器 5 0の注入動作を補助す る。 The injection capturing aid 1 of this embodiment includes a holding means 10, a pushing means 20, an operation repeller 30, and a power transmission means 40, and performs an injection operation of the contrast agent injector 50. Assist.
この造影剤注入器 5 0は、 図 1 1 A〜 1 1 Cに示すように、 バレル 5 1 とプラ ンジャ 5 2 とからなる。 バレル 5 1には造影剤が所定量充填されており、 バレル 5 1の吐出口 5 1 aはキャップ 5 1 bで塞がれており、 使用時にキヤップ 5 1 b を外して注入パイプ 5 3を接続する。 なお、 注入パイプ 5 3の他端には、 図示し ない注射針が接続されている。 This contrast agent injector 50 includes a barrel 51 and a plunger 52 as shown in FIGS. 11A to 11C. The barrel 51 is filled with a predetermined amount of a contrast agent, the discharge port 51a of the barrel 51 is closed with a cap 51b, and the cap 51b is removed to use the injection pipe 53 when used. Connecting. An injection needle (not shown) is connected to the other end of the injection pipe 53.
バレル 5 1は、 透明樹脂、 透明ガラス等の透明体で形成され、 開口側に鍔部 5 l cを有する。 このパレル 5 1には、 充填される造影剤の液量を示す目盛 5 4を 有するラベル 5 5が接着され、 目視で容易に造影剤の液量を確認することができ る。 The barrel 51 is formed of a transparent body such as a transparent resin or transparent glass, and has a flange 5lc on the opening side. A label 55 having a scale 54 indicating the amount of the contrast agent to be filled is adhered to the barrel 51 so that the amount of the contrast agent can be easily confirmed visually.
プランジャ 5 2には、 バレル 5 1の開口側にネジ穴部 5 2 aが形成され、 図 9 及び図 1 0に示すように、 押動手段 20を構成する口ッ ド 2 1の先端に設けられ る押圧部 2 1 aのネジ部 2 1 a 1が螺着脱可能になっている。 押圧部 2 1 aは、 ネジ部 2 1 a 1の基部に押圧鍔部 2 1 a 2が形成され、 この押圧鍔部 2 1 a 2の 外径 D 1はネジ穴部 5 2 aの穴径 D 2より大径でバレル 5 1の内径 D 3より小径 に形成されている。 In the plunger 52, a screw hole 52a is formed on the opening side of the barrel 51. As shown in FIGS. 9 and 10, the screw hole 52a is provided at the tip of the mouth 21 forming the pushing means 20. The screw portion 21a1 of the pressing portion 21a is detachably screwed. The pressing portion 21a has a pressing flange portion 21a2 formed at the base of the screw portion 21a1, and the outer diameter D1 of the pressing flange portion 21a2 is the hole diameter of the screw hole portion 52a. The diameter is larger than D2 and smaller than the inner diameter D3 of barrel 51.
ロッ ド 2 1を回転してネジ部 2 1 a 1をネジ穴部 5 2 aに螺着することによつ て押圧鍔部 2 1 a 2がプランジャ 5 2の押圧面 5 2 bに当接し、 プランジャ 5 2 が押動可能になる。 By rotating the rod 21 and screwing the screw portion 21a1 into the screw hole portion 52a, the pressing flange portion 21a2 comes into contact with the pressing surface 52b of the plunger 52. The plunger 52 can be pushed.
この状態で、 プランジャ 5 2がバレル 5 1内を摺動し、 パレル 5 1内の造影剤 、 バレル 5 1の吐出口 5 1 aに接続された注入パイプ 5 3から注入される。 この実施形態の注入捕助具では、 造影剤注入器 5 0を交換自在に保持するので 、 造影剤注入器 5 0の交換作業の作業性が良い。 In this state, the plunger 52 slides in the barrel 51, and the contrast agent in the barrel 51 is injected from the injection pipe 53 connected to the outlet 51a of the barrel 51. In the injection trapping tool of this embodiment, the contrast agent injector 50 is exchangeably held, so that the work of replacing the contrast agent injector 50 is good.
この薬剤注入器 5 0は、 1 00 m l用 (図 1 1 A)、 8 0m l用 (図 1 1 B、 5
O m 1用 (図 1 1 Cを示しているが、 パレル 5 1に充填された当初の造影剤の容 量としては、 4 O m l以上、 特に 7 O m 1以上であることが、 造影剤撮影に要求 される造影剤を注射できつつ、 プランジャ 5 2のス トローク範囲が、 適切な範囲 内であっても、 手の平でかなりの力で押す必要が無く、 指の力で注射動作でき、 造影剤注射での異常発生の際の圧力変動を、 圧力感覚が特に鋭い手の指で感じる ことができ、 好ましい。 This drug injector 50 is for 100 ml (Fig. 11A) and for 80 ml (Fig. 11B, 5 For Om1 (Figure 11C is shown, the initial volume of contrast agent filled in the barrel 51 should be at least 4 Oml, especially at least 7 Om1. Even though the contrast agent required for imaging can be injected, even if the stroke range of the plunger 52 is within an appropriate range, there is no need to press with a great deal of force on the palm, and the injection operation can be performed with the force of a finger, and the contrast Pressure fluctuations at the time of abnormal occurrence during drug injection can be felt with a finger having a particularly sharp pressure sensation, which is preferable.
また、 バレル 5 1に充填された当初の造影剤の容量として、 2 5 0 m l以下、 特に 1 6 0 m 1以下の場合に、 プランジャ 5 2のス トローク範囲が適切な範囲内 にしつつ、 指の力で注射動作できるので、 好ましい。 また、 バレル 5 1の断面積 としては、 3 c m 2以上、 特に 7 c m2以上であることが、 注入捕助具が無いと、 手の平でかなりの力で押す必要があるが、 この発明によりその必要が無く、 造影 剤撮影に要求される造影剤の容量に対して、 プランジャ 5 2のス トローク範囲が 適切なス トロークの範囲内となりつつ、 指の力で注射動作でき、 造影剤注射での 異常発生の際の圧力変動を、 圧力感覚が特に鋭い手の指で感じることができ、 好 ましい。 また、 パレル 5 1の断面積としては、 2 0 c m2以下、 特に 1 5 c m2以 下であることが、 装置に負担が少なく、 かつ、 指の力で注射動作でき、 造影剤注 射での異常発生の際の圧力変勤を、 圧力感覚が特に鋭い手の指で感じることがで き、 好ましい。 In addition, when the initial volume of the contrast agent filled in the barrel 51 is 250 ml or less, particularly 160 m1 or less, the stroke range of the plunger 52 is kept within an appropriate range. It is preferable because the injection operation can be performed with the force of. Also, the cross-sectional area of the barrel 51 should be 3 cm 2 or more, especially 7 cm 2 or more. Without the injection trap, it is necessary to press with a palm with a considerable force. It is unnecessary, and the stroke range of the plunger 52 is within the appropriate stroke range for the volume of the contrast agent required for the contrast agent imaging. The pressure fluctuation at the time of occurrence of an abnormality can be sensed with the fingers of the hand whose pressure is particularly sharp, which is preferable. As the cross-sectional area of the apparel 5 1, 2 0 cm 2 or less, to be particularly 1 5 cm 2 hereinafter, less burden on the device, and can be injection operation by the force of a finger, Note morphism in contrast agents It is preferable because the pressure change when an abnormality occurs can be sensed with the fingers of the hand whose pressure sense is particularly sharp.
また、 バレル 5 1に充填さる造影剤は、 例えば表 1に示すよう造影剤に用いる ことができる。 特に、 X線撮影用造影剤に用いることが好ましい。
The contrast agent to be filled in the barrel 51 can be used as a contrast agent, for example, as shown in Table 1. In particular, it is preferably used as a contrast agent for radiography.
一般名 販売名 ノ レノレ材質 オイパロミン コニカ 環状ポリオレフィン ィォパミドール Generic name Brand name Norenore material Oipalomin Konica Cyclic polyolefin Iopamidol
ィォパミロン 日本シヱ一リング ガラス Iopamilon Japan Ring Glass
ィォパーク コニカ 還状ポリオレフィン ィォへキソール Iopark Konica reclaimed polyolefin ihexol
ォムニパーク ポリプロピレン ィオベルソール ォプチレイ 山之内製薬 環状ポリオレフイン ィオメプロール ィォメロン エーザィ 環状ポリオレフィン ィォプロミド プロスコープ 田辺製薬 ガラス この注入補助具 1に備えられる保持手段 1 0は、 造影剤注入器 5 0のバレル 5 1が載置可能である受部 1 1 と、 この受部 1 1に対して、 開閉自在である保持部 1 2とを有する。 そして、 この受部 1 1にパレル 5 1が載置された状態で、 この 保持部 1 2が閉じることにより、 バレル 5 1を受部 1 1側へ押えられる。 この受 部 1 1はガイ ド体 2に固定され、 このガイ ド体 2はハンドル 3に固定されている 。 これにより、 注入補助具 1は、 ハンドル 3 と保持手段 1 0 とが一体になつたピ ス トル型になっている。 OMNIPARK Polypropylene iobersol Optiray Yamanouchi Pharmaceutical Cyclic polyolefin Iomeprol Iomeron Eisa Cyclic polyolefin iopromide Proscope Tanabe Pharmaceutical Glass It has a portion 11 and a holding portion 12 which can be opened and closed with respect to the receiving portion 11. The barrel 51 is pressed toward the receiving portion 11 by closing the holding portion 12 while the barrel 51 is placed on the receiving portion 11. The receiving portion 11 is fixed to a guide body 2, and the guide body 2 is fixed to a handle 3. Thus, the injection aid 1 is a piston type in which the handle 3 and the holding means 10 are integrated.
受部 1 1及び保持部 1 2は、 図 8に示すように、 透明樹脂の円筒を軸方向に半 割した形状に形成され、 受部 1 1より保持部 1 2が短く形成されている。 この保 持部 1 2の一端は、 ヒンジ 1 3を支点に受部 1 1に対して開閉可能であり、 他端 の爪部 1 4を受部 1 1の係止部 1 5に係合して固定される。 As shown in FIG. 8, the receiving portion 11 and the holding portion 12 are formed in a shape in which a transparent resin cylinder is divided in the axial direction, and the holding portion 12 is formed shorter than the receiving portion 11. One end of the holding portion 12 can be opened and closed with respect to the receiving portion 11 with the hinge 13 as a fulcrum, and the claw portion 14 at the other end is engaged with the locking portion 15 of the receiving portion 11. Fixed.
造影剤注入器 5 0のバレル 5 1を受部 1 1に載置し、 このバレル 5 1の一部を 保持部 1 2で保持することで、 造影剤注入器 5 0の着脱が容易で、 しかも簡単か つ確実に保持することができる。 The barrel 51 of the contrast agent injector 50 is placed on the receiving part 11 and a part of the barrel 51 is held by the holding part 12, so that the contrast agent injector 50 can be easily attached and detached. Moreover, it can be easily and securely held.
また、 受部 1 1及ぴ保持部 1 2が透明体であり、 造影剤注入器 5 0のバレル 5 1が視認可能である 操作者は、 操作レバー 3 0の操作中であっても、 造影剤注 入器 5 0のバレル 5 1に付された目盛等を見ることができ、 これによつて、 充填 される造影剤の液量を容易に確認することができる。 Further, the receiving part 11 and the holding part 12 are transparent, and the barrel 51 of the contrast agent injector 50 is visible. The scale and the like provided on the barrel 51 of the agent injector 50 can be seen, whereby the liquid amount of the contrast agent to be filled can be easily confirmed.
また、 保持部 1 2には、 押圧面 1 2 a側に係合溝 1 2 bが形成され、 この係合
溝 1 2 bに弾性体 1 6が埋め込まれ、 係合されている。 保持部 1 2を閉じて固定 することで、 弾性体 1 6がバレル 5 1の一部を押圧保持し、 バレル 5 1を傷付け ることなく、 確実に押圧して保持することができる。 この弾性体 1 6は、 可撓性 樹脂パイプを用いているが、 ゴム等で構成してもよい。 また、 弾性体 1 6は、 こ の実施の形態では 1個所に設けているが、 複数箇所に設けてもよく、 あるいは押 圧面 1 2 aの全面に設けてもよい。 Further, the holding portion 12 has an engagement groove 12 b formed on the pressing surface 12 a side. The elastic body 16 is embedded in and engaged with the groove 12b. By closing and fixing the holding portion 12, the elastic body 16 can press and hold a part of the barrel 51, and can surely press and hold the barrel 51 without damaging the barrel 51. The elastic body 16 uses a flexible resin pipe, but may be made of rubber or the like. Further, the elastic body 16 is provided at one place in this embodiment, but may be provided at a plurality of places, or may be provided on the entire pressing surface 12a.
また、 受部 1 1の端部 1 1 a及ぴ保持部 1 2の端部 1 2 cに、 バレル 5 1の開 口側に鍔部 5 1 cが当接することで、 パレル 5 1の押圧方向の移動を確実に規制 することができる。 また、 保持部 1 2によってバレル 5 1を保持し、 ス トッパー 3 4を解除した状態で、 ロッ ド 2 1の摘み部 2 3を若干引くことにより、 プラン ジャ 5 2を引いて、 血液が注入パイプ 5 3内に流入するのを目視で確認すること により、 注射針の先端が血管に入っているか確認できる。 In addition, the flange 51c is brought into contact with the end 11a of the receiving portion 11 and the end 12c of the holding portion 12 on the opening side of the barrel 51, thereby pressing the barrel 51. The movement in the direction can be reliably regulated. In addition, with the barrel 51 held by the holding portion 12 and the stopper 34 released, the knob 23 of the rod 21 is slightly pulled to pull the plunger 52 and blood is injected. By visually checking the inflow into the pipe 53, it can be confirmed whether the tip of the injection needle has entered the blood vessel.
この注入補助具 1に備えられる押動手段 2 0は、 ロッ ド 2 1 と、 ロッ ド 2 1の 先端に設けた押圧部 2 1 a と、 ロッ ド 2 1の頭部に取り付けた摘み部 2 3 とを有 し、 ロッ ド 2 1はガイ ド体 2に移動可能に設けられている。 The pushing means 20 provided in the injection aid 1 includes a rod 21, a pressing portion 21 a provided at the tip of the rod 21, and a knob 2 attached to the head of the rod 21. The rod 21 is provided movably on the guide body 2.
この注入捕助具 1に備えられる操作レバー 3 0は、 この操作レバー 3 0の操作 により、 挺子の支点 O 1を中心に回動する回動部材を兼ねている。 そして、 操作 レパー 3 0の指で握る側の握り部 3 0 a と反対側の操作部 3 0 b側が、 ハンドル 3に固定された支持軸 3 5が貫通しており、 この支持軸 3 5を中心に回動自在に 設けられている。 そして、 握り部 3 0 aを握ることにより、 操作レバー 3 0を操 作した際に、 挺子の支点 O 1 として機能する。 The operation lever 30 provided in the injection trapping tool 1 also functions as a rotation member that rotates around the fulcrum O1 of the roller by operating the operation lever 30. The support shaft 35 fixed to the handle 3 penetrates the grip 30 a on the side gripped by the finger of the operation leopard 30, and the support shaft 35 fixed to the handle 3. It is provided rotatably at the center. By operating the operating lever 30 by gripping the grip portion 30a, it functions as the fulcrum O1 of the armature.
ハンドル 3 と操作レバー 3 0は、 両方とも、 人の手により握ることができる位 置に設けられている。 これにより、 片手の親指側でハンドル 3を握り、 他の 4本 の指側で操作レバー 3 0を握り、 ハンドル 3側に引くことにより、 手動力により 、 操作レバー 3 0が操作される。 Both the handle 3 and the operation lever 30 are provided at positions where they can be gripped by a human hand. As a result, the handle 3 is gripped by the thumb of one hand, the operating lever 30 is gripped by the other four fingers, and the operating lever 30 is operated by hand power by pulling the handle 3.
即ち、 指を握る動作により操作レバー 3 0を操作することができる。 また、 操 作レパー 3 0 とハンドル 3を握ることにより持ち上げ、 操作することが可能であ る。 従って、 操作者がどのような体勢であっても、 手の指で容易に操作でき、 造 影剤注入時の圧力変動を容易に感じることができる。
この注入補助具 1に備えられる動力伝達手段 4 0は、 操作レパー 3 0の操作を 梃子の原理により押動手段 2 0へ減速增カして伝達する。 この動力伝達手段 4 0 は、 図 4及ぴ図 5に示すように、 梃子の支点 O 1を中心に、 操作レバー 3 0と、 操作レバー 3 0の操作部 3 0 bにより押されて移動するチヤッキングブレート 3 2 とを有し、 チヤッキングプレート 3 2が操作部 3 0 bの作動溝 3 O b iに摺動 可能に当接している。 That is, the operation lever 30 can be operated by the operation of grasping the finger. It is also possible to lift and operate by gripping the operation lever 30 and the handle 3. Therefore, regardless of the posture of the operator, the operator can easily operate with his / her finger, and can easily feel the pressure fluctuation during the injection of the contrast agent. The power transmission means 40 provided in the injection assistant 1 decelerates and transmits the operation of the operation hopper 30 to the pushing means 20 based on the principle of leverage. As shown in FIGS. 4 and 5, the power transmission means 40 is moved by being pushed by the operation lever 30 and the operation part 30 b of the operation lever 30 around the lever fulcrum O 1. A chucking plate 32, and the chucking plate 32 slidably abuts the operating groove 3O bi of the operation section 30b.
図 6に示すように、 チヤッキングプレート 3 2は、 ロッ ド 2 1を通し、 口ッ ド 2 1に摩擦係合して押し出すチヤッキング長孔 3 2 aを有し、 操作レバー 3 0の 動作に伴い、 図 7に示すように、 チヤッキングプレート 2 1が傾き、 チヤツキン グプレート 2 1のチヤッキング長孔 3 2 a部分がロッ ド 2 1 と摩擦係合して、 口 ッ ド 2 1を図 4の状態から前方に向けて送り出し、 図 5のよ うな状態になる。 また、 ロッド 2 1に通した状態でガイ ド体 2の固定部 8 0とチヤッキングプレ ート 3 2の相互間には、 弾性部材 (スプリ ング) 3 3が配置され、 この弾性部材 3 3はチヤッキングプレート 3 2を初期状態に戻すように付勢している。 そして 、 操作レバー 3 0の握りをゆるめると、 この付勢力により、 チヤッキングプレー ト 3 2が初期状態に戻ると共に、 操作レバー 3 0も運動して、 初期状態に戻る。 ロッ ド 2 1の後方への移動を防止するストッパー 3 4が設けられている。 この ス トッパー 3 4は、 ハンドル 3の上部にて片持ち支持されるレパー 3 4 a と、 こ のレパー 3 4 a とチヤッキングプレート 3 2 との間で弾性支持する弾性部材 (ス プリング) 3 4 cからなつていて、 レパー 3 4 aの貫通孔 3 4 a 1にてロッ ド 2 1を通している。 そして、 操作レバー 3 0の握りをゆるめると、 直ちに、 チヤッ キングプレート 3 2がロッ ド 2 1に対し垂直になり、 ロッ ド 2 1に対して摺動し 、 チヤッキングプレート 3 2が、 ロッ ド 2 1を後方へ移動させることが無い。 弾性部材 3 3のスプリング力が、 弾性部材 3 4 cのスプリング力より大きく設 定されており、 造影剤注入器 5 0を装着して図 4に示す如く操作レバー 3 0を引 く と、 操作レバー 3 0が梃子の支点◦ 1を中心に押動方向に回動し、 操作部 3 0 bの作動溝 3 0 b 1に摺動可能に当接しているチヤッキングプレート 3 2を押動 する。 これによりチヤッキングプレート 3 2は弹性部材 3 3の復元力に抗して傾 きながら前方に向けて移動することになり、 このときロッ ド 2 1はチヤッキング
プレート 3 2のチヤッキング長孔 3 2 aによってチヤッキングされ前方へ向けて 進むことになり、 造影剤注入器 5 0のプランジャ 5 1が押圧され、 バレル 5 1の 吐出口 5 1 aから造影剤が排出される。 操作レバー 3 0を離すとロッ ド 2 1に何 らの影響を与えることなしに弾性部材 3 3の復原力によって操作レバー 3 0及び チヤッキングプレート 3 2は初期位置に復帰することになる。 As shown in FIG. 6, the chucking plate 32 has a chucking slot 32 a through which the rod 21 is pushed through by frictionally engaging with the mouth 21, and the operation of the operation lever 30. As a result, as shown in FIG. 7, the chucking plate 21 is inclined, and the long chucking hole 3 2 a of the chucking plate 21 frictionally engages with the rod 21, and the port 21 is drawn. It is sent forward from the state of 4, and the state shown in Fig. 5 is obtained. An elastic member (spring) 33 is disposed between the fixing portion 80 of the guide body 2 and the chucking plate 32 while passing through the rod 21, and the elastic member 33 is The jacking plate 32 is urged to return to the initial state. When the grip of the operation lever 30 is released, the biasing force returns the chucking plate 32 to the initial state, and the operation lever 30 also moves to return to the initial state. A stopper 34 is provided to prevent the rod 21 from moving backward. The stopper 34 includes a reper 34 a that is cantilevered at the upper portion of the handle 3, and an elastic member (spring) that resiliently supports between the leper 34 a and the chucking plate 32. It is made up of 34 c and passes through rod 21 at through hole 34 a 1 of leper 34 a. As soon as the operating lever 30 is loosened, the chucking plate 32 becomes perpendicular to the rod 21 and slides against the rod 21 so that the chucking plate 32 is locked. Do not move C21 back. The spring force of the elastic member 33 is set to be greater than the spring force of the elastic member 34c, and when the contrast agent injector 50 is attached and the operation lever 30 is pulled as shown in Fig. 4, operation is performed. The lever 30 rotates in the pushing direction about the lever fulcrum ◦1, and pushes the chucking plate 3 2 slidably in contact with the operating groove 30b1 of the operation unit 30b. I do. As a result, the chucking plate 3 2 moves forward while tilting against the restoring force of the elastic member 3 3. The plunger 51 of the contrast agent injector 50 is pressed by being chucked by the chucking slot 3 2a of the plate 32 and moving forward, and the contrast agent is discharged from the discharge port 51 a of the barrel 51. Is done. When the operating lever 30 is released, the operating lever 30 and the chucking plate 32 return to the initial position by the restoring force of the elastic member 33 without any influence on the rod 21.
このように、 造影剤注入器 5 0のパレル 5 1を注入補助具 1に保持し、 操作レ パー 3 0の操作を梃子の原理により押動手段 2 0へ減速增カして伝達し、 押動手 段 2 0によりバレル 5 1のプランジャ 5 2を押動し、 バレル 5 1に充填された造 影剤を注入することで、 操作レバー 3 0を操作する指の力で注入動作ができ、 か つ、 患者の血管を突き抜けて注射針を刺してしまった場合や、 造影剤の注入によ り、 患者の血管が注入途中で収縮した場合や、 チューブが塞がった場合でも、 そ れによる圧力変動を、 圧力感覚が特に鋭い手の指で感じることができ注入動作を 中止またはゆつく り させることができる。 In this way, the barrel 51 of the contrast agent injector 50 is held by the injection assistant 1, and the operation of the operation hopper 30 is decelerated and transmitted to the pushing means 20 based on the principle of leverage. The plunger 52 of the barrel 51 is pushed by the moving means 20 to inject the contrast agent filled in the barrel 51, so that the injection operation can be performed with the force of the finger operating the operation lever 30. Even if a patient's blood vessel penetrates a patient's blood vessel and is punctured by a syringe needle, or if a patient's blood vessel contracts during injection due to injection of a contrast agent, or if the tube is blocked, the resulting pressure fluctuations Can be sensed with a particularly sharp finger of the hand, and the injection operation can be stopped or slowed down.
このバレル 5 1に充填された当初の造影剤の容量が 4 0 m 1以上、 さらに 7 0 m 1以上で、 容量が大きい場合でも、 自動注入装置のような制御装置が不要で、 手の平でかなりの力で押す必要がなく、 指の力で注射動作ができる。 Even if the initial volume of the contrast agent filled in this barrel 51 is 40 m1 or more, and even 70 m1 or more, and the volume is large, a control device such as an automatic injection device is not necessary, and it is quite handy. You do not need to press with the force of the finger, you can perform the injection operation with the force of the finger.
また、 バレル 5 1の断面積が 3 c m2以上、 さらに 7 c m2以上であり、 大きな 押動力を必要とする場合でも、 自動注入装置のような制御装置が不要で、 手の平 でかなりの力で押す必要がなく、 指の力で注射動作ができる。 In addition, even if the cross-sectional area of the barrel 51 is 3 cm 2 or more, and even 7 cm 2 or more, and a large pressing force is required, a control device such as an automatic injection device is not required, and the palm can be used with considerable force. There is no need to press, and injection can be performed with the power of a finger.
この実施の形態では、 図 1に示すように、 バレル 5 1の先端から動力伝達手段 2 0の挺子の支点 O 1までの距離 L 1 としては、 4 0 c m以下、 特に 2 5 c m以 下であることが好ましい。 これにより、 造影剤注入器 5 0のバレル 5 1に充填さ れた当初の造影剤の容量が大きくても、 この注入捕助具 1を手に持って取り回し たり、 操作するのが容易である。 また、 この距離 L 1 としては、 5 c m以上、 特 に 1 0 c m以上であることが好ましい。 これにより、 造影剤注入器 5 0のバレル 5 1に充填された当初の造影剤の容量が大きくても、 造影剤注入器 5 0の着脱が 容易になる。 In this embodiment, as shown in FIG. 1, the distance L 1 from the tip of the barrel 51 to the fulcrum O 1 of the power transmission means 20 is 40 cm or less, especially 25 cm or less. It is preferable that Thus, even if the initial volume of the contrast agent filled in the barrel 51 of the contrast agent injector 50 is large, it is easy to handle and operate the injection capturing aid 1 by hand. . Further, the distance L 1 is preferably 5 cm or more, particularly preferably 10 cm or more. Thus, even if the initial volume of the contrast agent filled in the barrel 51 of the contrast agent injector 50 is large, the attachment / detachment of the contrast agent injector 50 becomes easy.
また、 この実施の形態では、 動力伝達手段 2 0が、 梃子の支点 O lを中心に、 操作レバー 3 0と一体の操作部 3 0 bにより、 チヤッキングプレート 3 2により
ロッ ド 2 1をバレル側に前進させているが、 操作レバー 3 0に別体のレパ一等の —体に回動する部材設け、 この部材が回動すると、 押動手段 2 0を構成するチヤ ッキングプレート 3 2、 ロッ ド 2 1がバレル側に前進するものであってもよい。 このように、 梃子の支点 O 1を中心に、 操作レバー 3 0と一体又は一体に回動 する部材を有し、 この部材が回動すると、 押動手段がバレル側に前進することで 、 操作レバー 3 0の操作を梃子の原理による簡単な構造で押動手段 2 0によりプ ランジャ 5 2を押動することができる。 Further, in this embodiment, the power transmission means 20 is provided around the lever fulcrum O l by the operating part 30 b integral with the operating lever 30 and by the chucking plate 32. Although the rod 21 is advanced to the barrel side, a member such as a separate revolver is provided on the operation lever 30 so as to rotate on the body, and when this member rotates, the pushing means 20 is configured. The chucking plate 32 and the rod 21 may be advanced to the barrel side. As described above, a member that rotates integrally or integrally with the operation lever 30 around the lever fulcrum O 1 is provided, and when this member rotates, the pushing means moves forward to the barrel side, whereby the operation is performed. The operation of the lever 30 can be pushed by the pushing means 20 with a simple structure based on the principle of leverage.
また、 図 4及ぴ図 5に示すように、 挺子の支点 O 1から作用点 O 2までの距離 L 2としては、 0 . 5 c m以上、 特に 0 . 7 c m以上であることが好ましい。 こ れにより、 チヤッキングプレート 3 2が押動する距離が確保でき、 操作レバー 3 0の操作頻度が少なくて済み、 操作性が良い。 Further, as shown in FIGS. 4 and 5, the distance L2 from the fulcrum O1 of the tiller to the point of application O2 is preferably 0.5 cm or more, particularly preferably 0.7 cm or more. As a result, the pushing distance of the chucking plate 32 can be secured, the operation frequency of the operation lever 30 can be reduced, and the operability is good.
また、 挺子の支点 O 1から作用点 O 2までの距離 L 2としては、 3 c m以下、 特に、 2 c m以下であることが好ましい。 これにより、 梃子の原理による操作レ パー 3 0の操作に必要な力が弱くなり、 指の力で注射動作でき、 造影剤注射での 異常発生の際の圧力変動を、 圧力感覚が特に鋭い手の指で感じることができる。 また、 操作レバー 3 0の当初位置から最大操作位置に至るまでの間の操作全て において、 押動手段 2 0によってプランジャ 5 2を押動する方向 D Pと、 動力伝 達手段 4 0である操作レバー 3 0の挺子の支点 O 1である支持軸 3 5と、 作用点 である操作レパ一 3 0の操作部 3 0 bの先端 O 2とを結ぶ方向 D Lとの間の角度 Θ は、 3 0 ° 以上 1 5 0 ° 以下であることが、 特に、 4 5 ° 以上 1 3 5 ° 以下で あることが、 摩擦などを除いて、 動力伝達手段 4 0によって伝達される力の 5 0 %以上を押動手段 2 0に伝達することになり、 好ましい。 なお、 図に示す実施例 では、 角度 0 は、 8 0 ° 以上 1 3 5 ° 以下である。 このようにして、 操作レバー 3 0の当初位置から最大操作位置に至るまでの間の操作全てにおいて、 操作レパ 一 3 0の操作を押動手段 2 0へ減速増力して伝達するものであることが、 即ち、 操作レバー 3 0の当初位置から最大操作位置に至るまでの間の操作全てにおいて 、 操作レバー 3 0の操作に要する力が、 押動手段 2 0に伝達される力より小さく かつ、 操作レバー 3 0を操作する速度が、 押動手段 2 0が移動する速度より大き いことが、 一貫して指の力で容易に操作でき、 圧力変動も感じやすく好ましい。
なお、 注入捕助具の材質としては、 ロッ ド 2 1 とチヤッキングプレート 3 2と 弾性部材 3 3が金属で、 それ以外の部材が構造用プラスチックであることが重量 と耐久性のパランスから好ましい。 そして、 M R I装置用、 即ち、 M R I装置で 磁気共鳴効果を利用して被験者の造影断層画像をリアルタイムに撮像するのに用 いる場合、 注入捕助具の金属部材、 特に容積の大きいロッ ドが、 例えば、 非磁性 ステンレス鋼などの非磁性金属であることが、 磁場を乱す可能性がより低くなり 好ましい。 The distance L2 from the fulcrum O1 to the point of application O2 is preferably 3 cm or less, particularly preferably 2 cm or less. As a result, the force required for operating the operation lever 30 based on the principle of leverage is weakened, the injection operation can be performed with the force of a finger, and the pressure fluctuation when an abnormality occurs during the injection of the contrast medium is reduced. You can feel it with your fingers. Also, in all operations from the initial position of the operating lever 30 to the maximum operating position, the direction DP in which the plunger 52 is pushed by the pushing means 20 and the operating lever 40 as the power transmission means 40 The angle 間 の between the direction DL connecting the support shaft 35 as the fulcrum O 1 of the 30 and the tip O 2 of the operation part 30 b of the operation lever 30 as the point of action is 30% or more and 150 ° or less, particularly 45 ° or more and 135 ° or less, excluding friction, etc., 50% of the force transmitted by the power transmission means 40 The above is transmitted to the pushing means 20, which is preferable. In the embodiment shown in the figure, the angle 0 is not less than 80 ° and not more than 135 °. In this manner, in all operations from the initial position of the operation lever 30 to the maximum operation position, the operation of the operation lever 130 is transmitted to the pushing means 20 by deceleration and increase. That is, in all operations from the initial position of the operation lever 30 to the maximum operation position, the force required to operate the operation lever 30 is smaller than the force transmitted to the pushing means 20 and It is preferable that the speed at which the operating lever 30 is operated is higher than the speed at which the pushing means 20 moves, so that the operation can be easily and consistently performed with the force of a finger, and pressure fluctuation can be easily sensed. In addition, the material of the rod 21, the chucking plate 32, and the elastic member 33 is made of metal, and the other members are made of structural plastic, from the viewpoint of weight and durability. preferable. In the case of an MRI apparatus, that is, an MRI apparatus that uses a magnetic resonance effect to capture a tomographic image of a subject in real time, the metal member of the injection trapping tool, particularly a large volume rod, For example, a non-magnetic metal such as non-magnetic stainless steel is preferable because the possibility of disturbing the magnetic field is further reduced.
「変形例」 "Modified example"
図 1 2は、 実施形態 1における注入捕助具の変形例を示した側面図である。 こ の変形例の注入補助具 1 aは、 保持手段 1 0 aの受部 7 0に突起部 7 1を備えて おり、 造影剤注入器 5 0を保持手段 1 0 aに装着した際、 この突起部 7 1は、 パ レル 5 1の鍔部 5 1 c と係合する。 これにより、 操作レバー 3 0を初期状態に戻 した後、 ス トッパー 3 4を解除した状態で、 摘み部 2 3を押動方向と反対側の後 方に引くことにより、 プランジャ 5 2を押圧方向と反対の方向に引き戻す際に、 バレル 5 1が押圧方向と反対側に引き戻されることを規制することができる。 「実施形態 2」 FIG. 12 is a side view showing a modification of the injection / capture aid according to the first embodiment. The injection aid 1a of this modification is provided with a projection 71 on the receiving portion 70 of the holding means 10a, and when the contrast medium injector 50 is mounted on the holding means 10a, The protrusion 71 engages with the flange 51c of the barrel 51. As a result, after the operating lever 30 is returned to the initial state and the stopper 34 is released, the knob 23 is pulled rearward on the opposite side to the pressing direction, so that the plunger 52 is pressed in the pressing direction. When the barrel 51 is pulled back in the opposite direction, the barrel 51 can be restricted from being pulled back in the direction opposite to the pressing direction. "Embodiment 2"
次に、 実施形態 1の注入捕助具 1に備えられた動力伝達手段 4 0を変形した例 である実施形態 2の注入捕助具 1 bの動力伝達手段 4 O a 周辺を図 1 3に示す。 この実施の形態では、 操作レバー 3 0にガイ ド部材 9 0がロッ ド 2 1 と平行に設 けられ、 このガイ ド部材 9 0は前後 2箇所に配置した二対の支持ローラ 9 1で前 後方向に移動可能に支持されている。 このガイ ド部材 9 0にはラック歯 9 0 aが 形成され、 このラック歯 9 0 aに注入捕助具 1 bに備えられる回転体 9 2のピニ オン歯 9 2 aが嚙み合っている。 回転体 9 2には、 前進方向にのみ回転を許容す る一方向クラッチ 9 3が内蔵され、 回転体 9 2と駆動軸 9 4がー体に回転し、 駆 動軸 9 4のピニオン歯 9 4 aがロッ ド 2 1のラック歯 2 1 dに嚙み合っている。 操作レバー 3 0を引く と、 ガイ ド部材 9 0が回転体 9 2を前進方向に回転し、 これにより回転体 9 2と駆動軸 9 4が一体に押動方向に回転し、 ロッ ド 2 1が前 進する。 すなわち、 押動手段 2 0がバレル 5 1側に前進する。 この際、 操作レパ 一 3 0の操作を、 回転体 9 2のピニオン歯 9 2 a とピニオン歯 9 4 a との滅速比
に応じた挺子の原理により、 減速増力して、 駆動手段 2 0へ伝達する。 これによ り、 プランジャ 5 2を押動し、 バレル 5 1に充填された造影剤を注入する。 操作 レパー 3 0を操作する手を離すと、 弾性部材 9 5により、 操作レバー 3 0が元の 位置に復帰する。 Next, FIG. 13 shows the vicinity of the power transmitting means 4 Oa of the injection capturing aid 1 b of the second embodiment, which is an example in which the power transmitting means 40 provided in the injection capturing aid 1 of the first embodiment is modified. Show. In this embodiment, a guide member 90 is provided on the operation lever 30 in parallel with the rod 21. The guide member 90 is provided with two pairs of support rollers 91 disposed at two front and rear positions. It is movably supported in the backward direction. Rack teeth 90 a are formed on the guide member 90, and pinion teeth 92 a of a rotating body 92 provided in the injection trapping tool 1 b mesh with the rack teeth 90 a. . The rotating body 92 has a built-in one-way clutch 93 that allows rotation only in the forward direction.The rotating body 92 and the drive shaft 94 rotate in a body, and the pinion teeth 9 of the drive shaft 94 4a is engaged with the rack teeth 2 1d of the rod 21. When the operating lever 30 is pulled, the guide member 90 rotates the rotating body 92 in the forward direction, whereby the rotating body 92 and the drive shaft 94 rotate together in the pushing direction, and the rod 21 is rotated. Moves forward. That is, the pushing means 20 advances to the barrel 51 side. At this time, the operation of the operation lever 130 is performed by changing the speed reduction ratio between the pinion teeth 92 a and the pinion teeth 94 a of the rotating body 92. In accordance with the principle of the roller according to the above, the deceleration is increased and transmitted to the driving means 20. Thereby, the plunger 52 is pushed and the contrast agent filled in the barrel 51 is injected. When the hand for operating the operation lever 30 is released, the operation lever 30 is returned to the original position by the elastic member 95.
また、 操作レバー 3 0の当初位置から最大操作位置に至るまでの間の操作全て において、 押動手段 2 0によってプランジャ 5 2を押動する方向 D Pと、 動力伝 達手段 2 0である回転体 9 4の挺子の支点である中心軸 O 1 と、 作用点である回 転体 9 4のピニオン歯 9 4 a とロッ ド 2 1に設けたラック歯 2 1 dとが嚙み合う. 点 O 2 とを結ぶ方向 D Lとの間の角度 Θ は、 3 0 ° 以上 1 5 0 ° 以下であること カ 、 特に、 4 5 ° 以上 1 3 5 ° 以下であることが、 摩擦などを除いて、 動力伝達 手段 4 0 aによって伝達される力の 5 0 %以上を押動手段 2 0に伝達することに なり、 好ましい。 In all operations from the initial position of the operation lever 30 to the maximum operation position, the direction DP in which the plunger 52 is pushed by the pushing means 20 and the rotating body that is the power transmission means 20 are used. The central axis O 1, which is the fulcrum of the 94, is engaged with the pinion teeth 94 a of the rotating body 94, which is the point of action, and the rack teeth 21 d provided on the rod 21. The angle 間 の between the direction DL connecting O 2 and the angle DL 3 should be 30 ° or more and 150 ° or less, and in particular, 45 ° or more and 135 ° or less, except for friction, etc. Preferably, 50% or more of the force transmitted by the power transmitting means 40a is transmitted to the pushing means 20.
なお、 図 1 3に示す実施例では、 角度 0 は、 9 0 ° である。 このようにして、 操作レバー 3 0の当初位置から最大操作位置に至るまでの間の操作全てにおいて 、 操作レバー 3 0の操作を押動手段 2 0へ減速増力して伝達するものであること が、 即ち、 操作レバー 3 0の当初位置から最大操作位置に至るまでの間の操作全 てにおいて、 操作レバー 3 0の操作に要する力が、 押動手段 2 0に伝達される力 より小さくかつ、 操作レバー 3 0を操作する速度が、 押動手段 2 0が移動する速 度より大きいことが、 一貫して指の力で容易に操作でき、 圧力変動も感じやすく 好ましい。 In the embodiment shown in FIG. 13, the angle 0 is 90 °. In this manner, in all operations from the initial position of the operation lever 30 to the maximum operation position, the operation of the operation lever 30 is transmitted to the pushing means 20 by deceleration and increase. That is, in all operations from the initial position of the operation lever 30 to the maximum operation position, the force required to operate the operation lever 30 is smaller than the force transmitted to the pushing means 20 and It is preferable that the speed at which the operation lever 30 is operated is higher than the speed at which the pushing means 20 moves, so that the operation can be easily performed with the force of a finger consistently and the pressure fluctuation can be easily sensed.
以上、 説明した実施形態 1、 実施形態 2では、 1回の操作レバー 3 0の操作に よりバレル 5 1に充填された当初の造影剤の注入開始から注入終了までの全てを できるものではなく複数回の操作レバー 3 0の操作によりバレル 5 1に充填され た当初の造影剤の注入開始から注入終了までの全てをできるものである。 これに より、 操作レバー 3 0を指の力で握る操作で、 造影剤を注入できる。 なお、 注入 開始とは、 バレル 5 1に充填された当初の造影剤を初めてパレル 5 1内から外へ 送出するタイミングのことで、 注入終了とは、 バレル 5 1内のプランジャ 5 2を 押動する押動手段 2 0がそれ以上前進できない状態になるタイミングのことであ る。
また、 実施形態 1、 実施形態 2では、 造影剤の注入速度は、 平均 5 m l 秒以 下であることが好ましい。 これにより、 操作レバー 3 0を手の指で容易に操作す ることができ、 また、 指先で圧力変動をより感じることができつつ、 造影剤を注 入できる。 また、 造影剤の注入速度は、 平均 0 . 1 m 1 秒以上であることが好 ましい。 これにより、 より適切な造影撮影ができる。 また、 造影剤の注入圧力は 、 1 X 1 0 6 P a以下であることが好ましい。 これにより、 バレル 5 1が破裂する ことなく操作レバー 3 0を手の指で容易に操作することができ、 また、 指先で圧 力変動をより感じることができつつ、 造影剤を注入できる。 また、 造影剤の注入 圧力は、 血圧や尿管内の圧力など注入先の液圧以上である必要がある。 また、 こ の造影剤注入装置は、 造影剤を尿路または小静脈に注入するのに用いることに適 する。 In the first and second embodiments described above, one operation of the operation lever 30 does not enable the entire operation from the start of injection of the initial contrast agent filled in the barrel 51 to the end of injection, but a plurality of operations. By operating the operation lever 30 a number of times, the entire operation from the start of the injection of the contrast agent filled in the barrel 51 to the end of the injection can be performed. Thus, the contrast agent can be injected by the operation of grasping the operation lever 30 with the force of a finger. The start of injection refers to the timing at which the initial contrast agent filled in the barrel 51 is sent out from the inside of the barrel 51 for the first time, and the end of injection refers to the pushing of the plunger 52 in the barrel 51. This is the timing at which the pushing means 20 that cannot be moved forward can no longer move forward. In the first and second embodiments, it is preferable that the injection speed of the contrast agent be 5 ml seconds or less on average. Thereby, the operation lever 30 can be easily operated with the finger of the hand, and the contrast agent can be injected while the pressure fluctuation can be felt more easily with the fingertip. The injection speed of the contrast medium is preferably 0.1 m1 second or more on average. Thereby, more appropriate contrast imaging can be performed. Further, the injection pressure of the contrast agent is preferably 1 × 10 6 Pa or less. Thus, the operating lever 30 can be easily operated with the finger without the barrel 51 being ruptured, and the contrast agent can be injected while the pressure fluctuation can be felt more easily with the fingertip. Also, the injection pressure of the contrast agent needs to be higher than the fluid pressure of the injection destination, such as blood pressure or pressure in the ureter. The contrast medium injection device is suitable for use in injecting a contrast medium into the urinary tract or venules.
「実施形態 3」 "Embodiment 3"
実施形態 3は、 実施形態 1または実施形態 2の造影剤注入器の保持手段 1 0と 押動手段 2 0の変形例である。 The third embodiment is a modified example of the holding means 10 and the pushing means 20 of the contrast agent injector of the first or second embodiment.
図 1 4は実施形態 3における注入補助具の側面図、 図 1 5は注入補助具の斜視 図、 図 1 6は注入捕助具の平面図、 図 1 7は保持手段を示す斜視図、 図 1 8は中 間プレートの正面図、 図 1 9は中間プレートの斜視図、 図 2 0 A〜 2 0 Cは造影 剤注入器の斜視図である。 FIG. 14 is a side view of the injection assistant in the third embodiment, FIG. 15 is a perspective view of the injection assistant, FIG. 16 is a plan view of the injection assistant, FIG. 18 is a front view of the intermediate plate, FIG. 19 is a perspective view of the intermediate plate, and FIGS. 20A to 20C are perspective views of the contrast agent injector.
この実施の形態の注入補助具 1 0 1は、 保持手段 1 1 0と、 押動手段 1 2 0と 、 操作レバー 1 3 0 と、 動力伝達手段 1 4 0 とを備え、 造影剤注入器 1 5 0の注 入動作を捕助する。 The injection auxiliary tool 101 of this embodiment includes a holding means 110, a pushing means 120, an operation lever 130, and a power transmission means 140, and the contrast medium injector 1 Assists the 50 injection operation.
この造影剤注入器 1 5 0は、 図 2 0 A〜 2 0 Cに示すように、 バレル 1 5 1 と プランジャ 1 5 2とからなる。 バレル 1 5 1には造影剤が所定量充填されており 、 バレル 1 5 1の吐出口 1 5 1 aはキヤップ 1 '5 1 bで塞がれており、 使用時に キャップ 1 5 1 bを外して注入パイプ 1 5 3を接続する。 This contrast agent injector 150 includes a barrel 151 and a plunger 152 as shown in FIGS. 20A to 20C. The barrel 15 1 is filled with a predetermined amount of a contrast agent, the discharge port 15 1 a of the barrel 15 1 is closed with a cap 1 ′ 5 1 b, and the cap 15 1 b is removed during use. And connect the injection pipes 15 3.
バレル 1 5 1は、 透明樹脂、 透明ガラス等の透明体で形成され、 開口側に鍔部 1 5 1 cを有する。 このバレル 1 5 1には、 充填される造影剤の液量を示す目盛 1 5 4を有するラベル 1 5 5が接着され、 目視で容易に造影剤の液量を確認する ことができる。
プランジャ 1 5 2は、 頭部 1 5 6 aを有するビストン 1 5 6 と着脱自在に係合 する。 頭部 1 56 aが押動手段 1 2 0によって押動され、 この押動によってビス トン 1 5 6、 プランジャ 1 5 2がバレル 1 5 1內を摺動し、 バレル 1 5 1の吐出 口 1 5 1 aに接続された注入パイプ 1 5 3から注入可能である。 The barrel 151 is formed of a transparent body such as a transparent resin or transparent glass, and has a flange portion 151c on the opening side. A label 155 having a scale 154 indicating the amount of the contrast agent to be filled is adhered to the barrel 151, so that the amount of the contrast agent can be easily confirmed visually. Plunger 152 removably engages with a biston 1556 having a head 1556a. The head 1 56 a is pushed by the pushing means 1 20, and this push causes the biston 15 6 and the plunger 15 2 to slide on the barrel 15 1 內, and the outlet 1 of the barrel 15 1 Injection is possible from an injection pipe 15 3 connected to 51 a.
本実施形態の注入補助具では、 ピス トン 1 5 6が係合した状態の造影剤注入器 を交換自在に保持するので、 造影剤注入器の交換作業の作業性が良い。 In the injection assistant of the present embodiment, the contrast agent injector in the state where the pistons 156 are engaged is exchangeably held, so that the work of replacing the contrast agent injector is good.
この造影剤注入器 1 5 0は、 1 0 0m l用 (図 20 A)、 8 0m l用 (図 2 0 B 、 5 0m l用 (図 2 0 Cを示しており、 例えば表 2に示すよう造影剤に用いるこ とができるが、 特に、 X線撮影用造影剤に用いることが好ましい。 This contrast agent injector 150 is for 100ml (Fig. 20A), for 80ml (Fig. 20B, 50ml (Fig. 20C is shown, for example, as shown in Table 2) Although it can be used as a contrast medium, it is particularly preferable to use it as a contrast medium for radiography.
表 2 Table 2
なお、 これに限定されず大容量の造影剤の注入にも用いられる。 The present invention is not limited to this, and may be used for injection of a large amount of a contrast agent.
また、 この実施の形態では、 薬剤として造影剤の薬液を示しているが、 上記造 影剤以外に、 大容量の硫酸バリ ゥム注腸剤等に用いることができる。 Further, in this embodiment, a drug solution of a contrast agent is shown as a drug, but it can be used as a large-capacity barium sulfate enema, etc. in addition to the above-mentioned contrast agent.
硫酸バリ ウム注腸剤は、 肛門から大腸に注入して造影し、 Barium sulfate enema is injected into the large intestine from the anus and imaged.
商品名 製造元 Product name Manufacturer
パリエネマ 太田製薬 Parienema Ota Pharmaceutical
パロスパースェニマセッ ト (堀井) 堀井製薬工業 Parosparsenimaset (Horii) Horii Pharmaceutical
等に使用でき、 医療用の分野において好ましく用いられる。 Etc., and is preferably used in the medical field.
この注入捕助具 1 0 1に備えられる保持手段 1 1 0は、 造影剤注入器 1 5 0の バレル 1 5 1が載置可能である受部 1 1 1 と、 この受部 1 1 1に載置されたパレ
ル 1 5 1の一部を保持する保持部 1 1 2とを有している。 この受部 1 1 1はガイ ド体 1 0 2に固定され、 このガイ ド体 1 0 2はハンドル 1 0 3に固定されている 受部 1 1 1及び保持部 1 1 2は、 図 1 7に示すように、 透明樹脂の円筒を軸方 向に半割した形状に形成され、 受部 1 1 1 より保持部 1 1 2が短く形成されてい る。 この保持部 1 1 2の一端は、 ヒンジ 1 1 3を支点に受部 1 1 1に対して開閉 可能であり、 他端の爪部 1 1 4を受部 1 1 1の係止部 1 1 5に係合して固定され る。 The holding means 110 provided on the injection capturing aid 101 includes a receiving part 111 on which the barrel 151 of the contrast agent injector 150 can be placed, and a receiving part 111 The placed palle And a holding portion 112 for holding a part of the rule 151. The receiving part 111 is fixed to the guide 102, and the guide 102 is fixed to the handle 103. The receiving part 111 and the holding part 112 are shown in FIG. As shown in the figure, the transparent resin cylinder is formed in a shape obtained by halving the cylinder in the axial direction, and the holding portion 112 is shorter than the receiving portion 111. One end of the holding portion 1 1 2 can be opened and closed with respect to the receiving portion 1 1 1 with the hinge 1 1 3 as a fulcrum, and the claw 1 1 4 at the other end can be locked with the receiving portion 1 1 1 1 1 1 Engage with 5 and fix.
造影剤注入器 1 5 0のバレル 1 5 1を受部 1 1 1に載置し、 このバレル 1 5 1 の一部を保持部 1 1 2で保持することで、 造影剤注入器 1 5 0の着脱が容易で、 しかも簡単かつ確実に保持することができる。 The barrel 1 5 1 of the contrast agent injector 150 is placed on the receiving section 1 1 1, and a part of the barrel 1 5 1 is held by the holding section 1 1 2, whereby the contrast agent injector 1 5 0 Can be easily attached and detached, and can be easily and reliably held.
また、 受部 1 1 1及ぴ保持部 1 1 2が透明体であり、 造影剤注入器 1 5 0のパ レル 1 5 1に付された目盛等を見て、 充填される造影剤の液量を容易に確認する ことができる。 In addition, the receiving part 111 and the holding part 112 are transparent bodies, and the scale of the contrast agent injected into the barrel 150 of the contrast medium injector 150 is checked. The amount can be easily confirmed.
また、 保持部 1 1 2には、 押圧面 1 1 2 a側に係合溝 1 1 2 bが形成され、 こ の係合溝 1 1 2 bに弾性体 1 1 6が係合されている。 保持部 1 1 2を閉じて固定 することで、 弾性体 1 1 6がパレル 1 5 1の一部を押圧保持し、 バレル 1 5 1を 傷付けることなく、 確実に押圧して保持することができる。 この弾性体 1 1 6は 、 可撓性樹脂パイプを用いているが、 ゴム等で構成してもよい。 また、 弾性体 1 1 6は、 この実施の形態では 1個所に設けているが、 複数箇所に設けてもよく、 あるいは押圧面 1 1 2 aの全面に設けてもよい。 The holding portion 1 12 has an engaging groove 1 12 b on the pressing surface 1 12 a side, and an elastic body 1 16 is engaged with the engaging groove 1 1 2 b. . By closing and fixing the holding portion 1 1 2, the elastic body 1 16 presses and holds a part of the barrel 15 1, so that the barrel 15 1 can be reliably pressed and held without damaging the barrel 15 1. . The elastic body 116 uses a flexible resin pipe, but may be made of rubber or the like. Further, in this embodiment, the elastic body 116 is provided at one place, but may be provided at a plurality of places, or may be provided on the entire pressing surface 112a.
また、 受部 1 1 1の端部 1 1 1 a及ぴ保持部 1 1 2の端部 1 1 2 cに、 バレル 1 5 1の開口側に設けられた鍔部 1 5 1 cが当接することで、 バレル 1 5 1の押 圧方向の移動を確実に規制することができる。 In addition, a flange 1 51 c provided on the opening side of the barrel 15 1 abuts on an end 1 1 a of the receiving portion 1 1 1 and an end 1 1 2 c of the holding portion 1 1 2. Thus, the movement of the barrel 151 in the pressing direction can be reliably restricted.
この注入捕助具 1 0 1に備えられる押動手段 1 2 0は、 ロッ ド 1 2 1 と、 ロッ ド 1 2 1の先端部 1 2 1 aに取り付けた押圧部 1 2 2と、 ロッ ド 1 2 1の頭部 1 2 1 bに取り付けた摘み部 1 2 3 とを有する。 ロッ ド 1 2 1はガイ ド体 1 0 2に 移動可能に設けられ、 押圧部 1 2 2とピス トン 1 5 6の頭部 1 5 6 a との間に中 間プレート 1 2 4が介在されている。
中間プレート 1 24は、 図 1 8及ぴ図 1 9に示すように、 係合摺動部 1 2 4 a と、 係合保持部 1 2 4 bと、 押圧部 1 2 4 c とを有し、 樹脂で一体形成されてい るがこれに限定されない。 係合摺動部 1 2 4 aは、 押圧部 1 2 4 cの両側に形成 され、 切欠き部 1 2 4 a 1がガイ ド体 1 0 2の左右に形成されたレール部 1 0 2 aに摺動可能に係合され、 保持手段側に押動方向に移動可能に係合保持されてい る。 また、 係合保持部 1 2 4 bは、 押圧部 1 2 4 cの下側に形成され、 外面 1 2 4 1はガイ ド体 1 0 2のガイ ド面 1 0 2 bを摺動可能な形状に形成され、 凹溝 1 2 4 b 2にピス トン 1 5 6の頭部 1 5 6 aが係合保持される。 これにより、 口 ッ ド 1 2 1の摘み部 1 2 3を引く ことにより、 ピス トン 1 5 6を介してプランジ ャ 1 5 2を引いて、 注射針の先端が血管に入っているか確認できる。 The pushing means 120 provided in the injection capturing aid 101 includes a rod 121, a pressing part 122 attached to a tip part 121a of the rod 121, and a rod 122. And a knob 1 2 3 attached to the head 1 2 1 b of the 1 2 1. The rod 122 is movably provided on the guide body 102, and an intermediate plate 124 is interposed between the pressing part 122 and the head 156a of the piston 156. ing. As shown in FIGS. 18 and 19, the intermediate plate 124 has an engaging sliding portion 124a, an engaging holding portion 124b, and a pressing portion 124c. It is integrally formed of resin, but is not limited to this. The engaging sliding portions 124a are formed on both sides of the pressing portion 124c, and the notch portions 124a1 are formed on the left and right sides of the guide 102, and the rail portions 102a. And is slidably engaged with the holding means and is engaged and held movably in the pushing direction on the holding means side. The engagement holding portion 124b is formed below the pressing portion 124c, and the outer surface 12441 can slide on the guide surface 102b of the guide body 102. The head 1556a of the piston 1556 is engaged with and held by the concave groove 124b2. Thus, by pulling the knob 123 of the mouth 122, the plunger 152 is pulled via the piston 156, and it can be confirmed whether the tip of the injection needle is in the blood vessel.
ガイ ド体 1 0 2には、 開口部 1 0 2 cが形成され、 ロッ ド 1 2 1の押圧部 1 2 2と、 中間プレート 1 24と、 この中間プレート 1 2 4の係合保持部 1 2 4 bに 係合保持されるピス トン 1 5 6の頭部 1 5 6 aがガイ ド体 1 0 2と干渉しないよ うになつている。 An opening 102 c is formed in the guide body 102, and a pressing portion 122 of the rod 121, an intermediate plate 124, and an engagement holding portion 1 of the intermediate plate 124 are formed. The head 1 56 a of the piston 1 56 engaged with and held in the 2 4 b does not interfere with the guide body 102.
押動手段 1 2 0からの押圧力が中間プレート 1 2 4、 ピス トン 1 5 6を介して プランジャ 1 5 2に伝達され、 操作時に押動手段側にずれが生じても中間プレー ト 1 2 4によってピス トン 1 5 6を介してプランジャ 1 5 2に伝達されることが 規制され、 人手による操作で正確な造影剤の注入ができる。 The pressing force from the pushing means 120 is transmitted to the plunger 152 via the intermediate plate 124 and the piston 156, and even if the pushing means shifts during operation, the intermediate plate 122 4 restricts the transmission to the plunger 15 2 via the piston 15 6, so that the contrast medium can be injected accurately by manual operation.
この中間プレート 1 24は、 保持手段 1 1 0側、 即ち保持手段 1 1 0が固定さ れたガイ ド体 1 0 2に押動方向に移動可能に係合保持され、 ピス トン 1 5 6の頭 部 1 5 6 aに係合保持されることで、 円滑に押動方向に移動することができる。 この注入補助具 1 0 1に備えられる操作レパー 1 3 0は、 握り部 1 3 0 a と操 作部 1 3 0 bとを有し、 操作部 1 3 0 b側がハンドル 1 0 3に支持軸 1 3 5を支 点回動可能に設けられている。 片手の親指側でハンドル 1 0 3を握り、 他の 4本 の指側で操作レバー 1 3 0を握り、 ハンドル 1 0 3側に引く手動力によって作動 する。 The intermediate plate 124 is engaged and held movably in the pushing direction on the holding means 110 side, that is, the guide body 102 to which the holding means 110 is fixed. By being engaged with and held by the head part 156a, it is possible to smoothly move in the pushing direction. The operation lever 130 provided in the injection aid 101 has a grip portion 130a and an operation portion 130b, and the operation portion 130b side has a support shaft on the handle 103. 13 5 is provided to be pivotable. Hold the handle 103 with one thumb and the control lever 130 with the other four fingers, and operate with the manual force pulled toward the handle 103.
「変形例」 "Modified example"
図 2 1は、 実施形態 3における注入補助具の変形例を示した側面図である。 こ の変形例の注入捕助具 1 0 1 aは、 保持手段 1 1 0 aの受部 1 7 0に突起部 1 7
1を備えており、 造影剤注入器 1 5 0を保持手段 1 1 0 aに装着した際、 この突 起部 1 7 1は、 バレル 1 5 1の鍔部 1 .5 1 c と係合する。 これにより、 操作レバ 一 1 3 0を初期状態に戻した後、 ス トッパー 1 3 4を解除した状態で、 摘み部 1 2 3を押動方向と反対側の後方に引く ことにより、 プランジャ 1 5 2を押圧方向 と反対の方向に引き苠す際に、 バレル 1 5 1が押圧方向と反対側に引き戻される ことを規制することができる。 FIG. 21 is a side view showing a modification of the injection assistant according to the third embodiment. The injection capturing aid 101a of this modified example has a projection 17 at the receiving portion 170 of the holding means 110a. When the contrast agent injector 150 is attached to the holding means 110a, the protrusion 1711 engages with the collar 1.51c of the barrel 151. . As a result, after the operation lever 130 is returned to the initial state, by pulling the knob 123 to the rear opposite to the pushing direction with the stopper 134 released, the plunger 150 is pulled. When the 2 is pulled in the direction opposite to the pressing direction, it is possible to restrict the barrel 15 1 from being pulled back to the side opposite to the pressing direction.
「実施形態 4」 "Embodiment 4"
本実施形態は、 実施形態 1〜 3の動力伝達手段の変形例である。 図 2 2は実施 形態 4の動力伝達手段 1 4 0 aの概略構成図であり、 図 2 3は実施形態 4の動力 伝達手段 1 4 0 aの作動状態を示す概略構成図である。 This embodiment is a modification of the power transmission means of the first to third embodiments. FIG. 22 is a schematic configuration diagram of the power transmission means 140a of the fourth embodiment, and FIG. 23 is a schematic configuration diagram showing an operation state of the power transmission means 140a of the fourth embodiment.
この注入補助具 1 0 1に備えられる動力伝達手段 1 4 0 aは、 操作レバー 1 3 0への手動力を梃子の原理により大きく して押動手段 1 2 0に伝える。 この梃子 の原理により、 図 2 2及び図 2 3に示すように、 チヤッキングプレート 1 3 2が 操作レバー 1 3 0の操作部 1 3 0 bに固定されている。 このチヤッキングプレー ト 1 3 2は、 ロッ ド 1 2 1を通す貫通孔 1 3 2 aを有し、 操作レバー 1 3 0の動 作に伴い口ッ ド 1 2 1を図 2 2の状態から前方に向けて送り出し、 図 2 3のよ う な状態になる。 The power transmission means 140a provided in the injection assistant 101 transmits the manual force to the operation lever 130 to the pushing means 120 by increasing the manual force by the principle of leverage. According to this principle of leverage, as shown in FIGS. 22 and 23, the chucking plate 13 2 is fixed to the operation portion 130 b of the operation lever 130. The chucking plate 13 2 has a through hole 13 2 a through which the rod 12 1 passes, and with the operation of the operation lever 130, the mouth 1 2 1 is brought into the state shown in FIG. From the front, and it will be in the state as shown in Fig. 23.
また、 ロッ ド 1 2 1に通した状態でガイ ド体 1 0 2の固定部 1 8 0 とチヤツキ ングプレート 1 3 2の相互間には、 弾性部材 (スプリング) 1 3 3が配置され、 この弾性部材 1 3 3はチヤッキングプレート 1 3 2を初期状態に戻すための復原 力を有する。 An elastic member (spring) 133 is disposed between the fixed portion 180 of the guide body 102 and the chucking plate 132 while passing through the rod 122. The elastic member 133 has a restoring force for returning the chucking plate 132 to the initial state.
また、 ロッ ド 1 2 1の後方への移動を防止するス トッパー 1 3 4が設けられて いる。 このス トッパー 1 3 4は、 ハンドル 1 0 3の上部にて片持ち支持されるレ パー 1 3 4 a と、 このレバー 1 3 4 aをガイ ド体 1 0 2の固定部 1 3 4 b との間 で弾性支持する弾性部材 1 3 4 cからなつていて、 レパー 1 3 4 aの貫通孔 1 3 4 a 1にてロッ ド 1 2 1を通している。 Also, a stopper 134 is provided to prevent the rod 122 from moving backward. The stopper 13 4 has a lever 13 4 a which is supported at the upper portion of the handle 10 3 and a lever 13 4 a which is fixed to the guide body 10 2 with a fixing portion 13 4 b. And an elastic member 134c that elastically supports between them, and passes through the rod 122 through the through hole 133a1 of the repeller 134a.
このス トツパ^" 1 3 4は、 操作レバー 1 3 0をハンドル 1 0 3側に引く動作に よるロッ ド 1 2 1の前進に際しては何らの影響も与えないが、 ロッ ド 1 2 1を後 方に向けて押圧するような力が作用した場合には貫通孔 1 3 4 a 1のエッジにて
摩擦抵抗を高めて口ッ ド 1 2 1の後方への滑りを阻止する。 This stopper ^ "1 34 has no effect on the forward movement of the rod 12 1 by pulling the operating lever 13 3 toward the handle 10 3, but the rod 12 1 When a force is applied that pushes in the direction of Increase the frictional resistance to prevent the mouth 1 2 1 from sliding backwards.
造影剤注入器 1 5 0を装着して図 2 2に示す如く操作レバー 1 3 0を引く と、 チヤッキングプレート 1 3 2は弾性部材 1 3 3の復元力に抗して傾きながら前方 に向けて移動することになり、 このときロッ ド 1 2 1はチヤッキングプレート 1 3 2にチヤッキングされ前方へ向けて進むことになり、 造影剤注入器 1 5 0のプ ランジャ 1 5 1が中間プレート 1 2 4を介して押圧される結果として、 ノ レル 1 5 1の吐出口 1 5 1 aから薬液が排出される。 When the contrast agent injector 150 is attached and the operating lever 13 is pulled as shown in Fig. 22, the chucking plate 13 2 moves forward while tilting against the restoring force of the elastic member 133. At this time, the rod 12 1 is chucked by the chucking plate 13 2 and moves forward, and the plunger 15 1 of the contrast medium injector 15 As a result of being pressed through the plate 124, the chemical solution is discharged from the outlet port 151a of the nozzle 1515.
操作レバー 1 3 0を離すとロッ ド 1 2 1に何らの影響を与えることなしに弾性 部材 1 3 3の復原力によって操作レパー 1 3 0及ぴチヤッキングプレート 1 3 2 は初期位置に復帰することになる。 When the operating lever 13 is released, the operating lever 13 and the chucking plate 13 return to the initial position by the restoring force of the elastic member 13 without any influence on the rod 12. Will do.
このように、 この実施の形態の注入補助具 1 0 1では、 造影剤注入器 1 5 0の バレル 1 5 1を保持手段 1 1 0に装着して保持し、 手動力によって操作レバー 1 3 0を操作すると、 この手動力が動力伝達手段 1 4 0によって押動手段 1 2 0へ 伝達されて押動手段 1 2 0が造影剤注入器 1 5 0のプランジャ 1 5 2を中間プレ ート 1 2 4、 ピス トン 1 5 6を介して押動することで、 造影剤注入器 1 5 0の薬 液を注入でき、 粘度の高い造影剤を高い圧力にて注入するときにも、 人手による 操作で迅速かつ容易に注入でき、 例えば患者の血管に正確に注入針が入っている か否かや注入速度等を手の指の感覚で知ることかできる。 As described above, in the injection auxiliary tool 101 of this embodiment, the barrel 15 1 of the contrast agent injector 150 is mounted and held on the holding means 110, and the operation lever 130 is manually operated. When this is operated, this manual force is transmitted to the pushing means 120 by the power transmission means 140, and the pushing means 120 pushes the plunger 15 2 of the contrast agent injector 150 to the intermediate plate 1 24, By pushing through the pistons 156, the drug solution of the contrast agent injector 150 can be injected, and even when a high-viscosity contrast agent is injected at high pressure, manual operation is required. Injection can be performed quickly and easily, and for example, it is possible to know whether or not the injection needle is correctly inserted into the blood vessel of the patient, the injection speed, and the like with the sense of a finger of the hand.
操作レバー 1 3 0への手動力を梃子の原理により大きく して押動手段 1 2 0に 伝えることで、 人手による操作でより一層迅速かつ容易に注入することができる By increasing the manual force applied to the operating lever 130 by the principle of leverage and transmitting it to the pushing means 120, injection can be performed more quickly and easily by manual operation.
産業上の利用可能性 Industrial applicability
前記したように、 本発明の注入補助具では、 造影剤注入器のパレルを注入補助 具に保持し、 操作レバーの操作を梃子の原理により押動手段へ減速增力して伝達 し、 押動手段によりバレルのプランジャを押動し、 バレルに充填された造影剤を 注入することで、 指の力で注入動作ができ、 かつ、 患者の血管を突き抜けて注射 針を刺してしまった場合や、 造影剤の注入により、 患者の血管が注入途中で収縮 した場合や、 チューブが塞がった場合でも、 それによる圧力変動を、 圧力感覚が
特に鋭い手の指で感じることができ注入動作を中止またはゆつく り させることが できる。 そのため、 造影剤を注入するのに適している。
As described above, in the injection assistant of the present invention, the barrel of the contrast agent injector is held by the injection assistant, and the operation of the operation lever is transmitted to the pushing means by deceleration by the principle of leverage. By pushing the barrel plunger by means and injecting the contrast agent filled in the barrel, the injection operation can be performed with the force of a finger, and when the injection needle is pierced through the patient's blood vessel, Even if the patient's blood vessel contracts during the injection or the tube becomes blocked due to the injection of the contrast agent, the pressure fluctuation caused by the In particular, it can be felt with a sharp finger and the injection operation can be stopped or slowed down. Therefore, it is suitable for injecting a contrast agent.
Claims
1 . バレルに充填された造影剤をプランジャの押動で注入可能な造影剤注入器を 着脱自在に保持し、 この保持した前記造影剤注入器の注入動作を補助する注入捕 助具であって、 1. An injection aid for detachably holding a contrast agent injector capable of injecting a contrast agent filled in a barrel by pushing a plunger, and assisting an injection operation of the held contrast agent injector. ,
前記バレルを保持する保持手段と、 Holding means for holding the barrel,
前記プランジャを押動する押動手段と、 Pushing means for pushing the plunger,
手の指によって操作可能な操作レバーと、 An operation lever operable by a finger of a hand,
前記操作レバーの操作を梃子の原理により前記押動手段へ減速增力して伝達す る動力伝達手段とを有することを特徴とする注入補助具。 And a power transmission means for transmitting the operation of the operation lever to the pushing means by deceleration based on the principle of leverage.
2 . 前記バレルに充填された当初の造影剤の容量が 4 0 m 1以上であることを特 徵とする請求の範囲第 1項に記載の注入捕助具。 2. The injection and capture device according to claim 1, wherein the initial volume of the contrast agent filled in the barrel is 40 m1 or more.
3 . 前記バレルに充填された当初の造影剤の容量が 2 5 0 m l以下であることを 特徴とする請求の範囲第 1項または第 2項に記載の注入捕助具。 3. The injection and capture device according to claim 1, wherein the initial volume of the contrast agent filled in the barrel is 250 ml or less.
4 .前記バレルの断面積が 3 c m2以上であることを特徴とする請求の範囲第 1項 乃至第 3項のいずれか 1項に記載の注入補助具。 4. Injection aid according to any one of Claims paragraphs 1 through the third term, wherein the cross-sectional area of the barrel is 3 cm 2 or more.
5 .前記バレルの断面積が 2 0 c m2以下であることを特徴とする請求の範囲第 1 項乃至第 4項のいずれか 1項に記載の注入捕助具。 5. The injection trap according to any one of claims 1 to 4, wherein a sectional area of the barrel is 20 cm 2 or less.
6 . 前記バレルの先端から前記動力伝達手段の挺子の支点までの距離が 4 O c m 以下であることを特徴とする請求の範囲第 1項乃至第 5項のいずれか 1項に記載 の注入補助具。 6. The injection according to any one of claims 1 to 5, wherein a distance from a tip of the barrel to a fulcrum of a ram of the power transmission means is 4 Ocm or less. Aids.
7 . 前記バレルの先端から前記動力伝達手段の挺子の支点までの距離が 5 c m以 上であることを特徴とする請求の範囲第 1項乃至第 6項のいずれか 1項に記載の 注入捕助具。 7. The injection according to any one of claims 1 to 6, wherein a distance from a tip of the barrel to a fulcrum of a power transmission means is 5 cm or more. An aid.
8 . 前記動力伝達手段が、 8. The power transmission means is:
前記操作レバーの操作により、 挺子の支点を中心に回動する回動部材を有し、 前記回動部材が押動方向に回動すると、 前記押動手段が前記バレル側に前進する ものであることを特徴とする請求の範囲第 1項乃至第 7項のいずれか 1項に記載 の注入捕助具。
A rotating member that rotates around a fulcrum of a pivot by operating the operating lever, and when the rotating member rotates in a pushing direction, the pushing means advances to the barrel side. The injection / capture aid according to any one of claims 1 to 7, wherein the injection / capture aid is provided.
9 . 前記回動部材の作用点からの作用により、 直接又は間接に、 前記押動手段が 前記パレル側に前進するものであることを特徴とする請求の範囲第 8項に記載の 注入補助具。 9. The injection assisting tool according to claim 8, wherein the pushing means advances directly or indirectly to the barrel side by an action from an action point of the rotating member. .
1 0 . 前記挺子の支点から前記作用点までの距離が 0 . 5 c m以上であることを 特徴とする請求の範囲第 9項に記載の注入補助具。 10. The injection aid according to claim 9, wherein the distance from the fulcrum of the roller to the point of application is 0.5 cm or more.
1 1 . 前記挺子の支点から前記作用点までの距離が 3 c m以下であることを特徴 とする請求の範囲第 9項または第 1 0項に記載の注入捕助具。 11. The injection / capture aid according to claim 9 or 10, wherein a distance from a fulcrum of the roller to the point of application is 3 cm or less.
1 2 . 前記操作レバーの当初位置から最大操作位置に至るまでの間の操作全てに おいて、 前記押動手段によって前記プランジャを押動する方向と、 前記動力伝達 手段の挺子の支点と前記作用点とを結ぶ方向との間の角度が、 3 0 ° 以上 1 5 0 ° 以下であることを特徴とする請求の範囲第 9項乃至第 1 1項のいずれか 1項に 記載の注入捕助具。 1 2. In all operations from the initial position of the operation lever to the maximum operation position, the direction in which the plunger is pushed by the pushing means, the fulcrum of the pivot of the power transmission means, and The injection trap according to any one of claims 9 to 11, wherein an angle between the direction and a direction connecting the action point is not less than 30 ° and not more than 150 °. Aids.
1 3 . 前記操作レバーの当初位置から最大操作位置に至るまでの間の操作全てに おいて、 前記操作レバーの操作を前記押動手段へ減速增力して伝達するものであ ることを特徴とする請求の範囲第 1項乃至第 1 2項のいずれか 1項に記載の注入 補助具。 13. In all the operations from the initial position of the operation lever to the maximum operation position, the operation of the operation lever is transmitted to the pushing means by decelerating force. The injection aid according to any one of claims 1 to 12, wherein:
1 4 . 1回の前記操作レバーの操作により前記バレルに充填された当初の造影剤 の注入開始から注入終了までの全てをできるものではなく、 複数回の前記操作レ バーの操作により前記バレルに充填された当初の造影剤の注入開始から注入終了 までの全てをできるものであることを特徴とする請求の範囲第 1項乃至第 1 3項 のいずれか 1項に記載の注入捕助具。 144. One operation of the operation lever cannot perform all operations from the start to the end of injection of the original contrast agent filled in the barrel. The injection trap according to any one of claims 1 to 13, wherein the injection trap is capable of performing everything from the start of injection of the filled contrast agent to the end of injection.
1 5 . 前記保持手段により前記バレルを保持した状態で、 前記バレルを視認可能 であることを特徴とする請求の範囲第 1項乃至第 1 4項のいずれか 1項に記載の 注入補助具。 15. The injection aid according to any one of claims 1 to 14, wherein the barrel is visible while the barrel is held by the holding means.
1 6 . 前記造影剤を平均 5 m 1 秒以下の注入速度で注入するためのものである ことを特徴とする請求の範囲第 1項乃至第 1 5項のいずれか 1項に記載の注入捕 助具。 16. The injection trap according to any one of claims 1 to 15, wherein the contrast medium is injected at an injection speed of 5 m1 second or less on average. Aids.
1 7 . 前記造影剤を 1 X 1 0 6 P a以下の注入圧力で注入するためのものであるこ とを特徴とする請求の範囲第 1項乃至第 1 6項のいずれか 1項に記載の注入捕助
具。 一 17. The method according to any one of claims 1 to 16, wherein the contrast agent is for injecting at an injection pressure of 1 X 106 Pa or less. Injection assistance Utensils. one
1 8 . 前記造影剤を尿路または小静脈に注入するためのものであることを特徴と する請求の範囲第 1項乃至第 1 7項のいずれか 1項に記載の注入捕助具。 18. The injection and capture device according to any one of claims 1 to 17, wherein the contrast agent is for injecting the contrast agent into the urinary tract or venules.
1 9 . 前記操作レバーとともに人の手により握ることができる位置に、 ハンドル が設けられていることを特徴とする請求の範囲第 1項乃至第 1 8項のいずれか 1 項に記載の注入捕助具。 19. The injection trap according to any one of claims 1 to 18, wherein a handle is provided at a position where the handle can be grasped by a human hand together with the operation lever. Aids.
2 0 . 前記操作レバーと前記ハンドルを握ることにより持ち上げ、 操作すること が可能であることを特徴とする請求の範囲第 1 9項に記載の注入補助具。 20. The injection aid according to claim 19, wherein the auxiliary device can be lifted and operated by grasping the operation lever and the handle.
2 1 . 前記ハンドルと前記保持手段とが一体になったビス トル型であることを特 徴とする請求の範囲第 1 9項または第 2 0項に記載の注入補助具。 21. The injection aid according to claim 19 or 20, wherein the handle and the holding means are of an integral type.
2 2 . 前記保持手段は、 前記造影剤注入器の前記バレルが載置可能である受部と 、 開閉自在で閉じた時、 前記受部に載置された前記バレルの一部を保持する保持 部とを有することを特徴とする請求の範囲第 1項に記載の注入補助具。 22. The holding means includes: a receiving portion on which the barrel of the contrast agent injector can be placed; and a holding portion for holding a part of the barrel placed on the receiving portion when the barrel is openably and closably closed. 2. The injection aid according to claim 1, wherein the injection aid has a portion.
2 3 . 前記保持部は、 透明体であることを特徴とする請求の範囲第 2 2項に記載 の注入捕助具。 23. The injection / capture aid according to claim 22, wherein the holding section is a transparent body.
2 4 . 前記保持部は、 前記バレルの一部を押圧保持する弾性体を有することを特 徴とする請求の範囲第 2 2項または第 2 3項に記載の注入補助具。 24. The injection assistant according to claim 22 or 23, wherein the holding portion has an elastic body that presses and holds a part of the barrel.
2 5 . 前記造影剤注入器のバレルは、 前記バレルの開口側に鍔部を有し、 この鍔 部を前記保持部に当接させることを特徴とする請求の範囲第 2 2項乃至第 2 4項 のいずれか 1項に記載の注入捕助具。 25. The barrel of the contrast agent injector, wherein the barrel has a flange on the opening side of the barrel, and the flange is brought into contact with the holding portion. Injection / capture aid according to any one of Items 4 to 4.
2 6 . 前記受部は、 突起部を有し、 この突起部に前記鍔部を係合させることを特 徴とする請求の範囲第 2 2項乃至第 2 5項のいずれか 1項に記載の注入捕助具。 26. The receiving portion according to any one of claims 22 to 25, wherein the receiving portion has a projection, and the flange is engaged with the projection. Injection catcher.
2 7 . 前記造影剤注入器は、 そのプランジャに頭部を有するピス トンが係合され ており、 前記押動手段の押圧部と前記ビス トンの頭部との間に中間プレートを介 在させたことを特徴とする請求の範囲第 2 2項乃至第 2 4項のいずれか 1項に記 載の注入補助具。 27. In the contrast agent injector, a plunger having a head having a head is engaged, and an intermediate plate is interposed between a pressing portion of the pressing means and the head of the biston. The injection aid according to any one of claims 22 to 24, characterized in that:
2 8 . 前記中間プレートは、 前記保持手段側に押動方向に移動可能に係合保持さ れる係合摺動部と、 前記ビス トンの頭部を係合保持する係合保持部とを有するこ とを特徴とする請求の範囲第 2 7項に記載の注入捕助具。
28. The intermediate plate has an engagement sliding portion which is engaged and held movably in the pushing direction on the holding means side, and an engagement holding portion which engages and holds the head of the biston. 28. The injection / capture aid according to claim 27, characterized by the above-mentioned.
2 9 . 造影剤注入器のパレルは、 透明体であり、 充填される造影剤の液量を示す 目盛を有することを特徴とする請求の範囲第 1項乃至第 2 8項のいずれか 1項に 記載の注入捕助具。 29. The contrast agent injector according to any one of claims 1 to 28, wherein the barrel of the contrast agent injector is a transparent body and has a scale indicating the amount of the contrast agent to be filled. Injection / capture aid according to 1.
3 0 . 造影剤は、 硫酸バリ ウム注腸剤を含むことを特徴とする請求の範囲第 1項 乃至第 2 9項のいずれか 1項に記載の注入捕助具。
30. The injection / capture aid according to any one of claims 1 to 29, wherein the contrast agent includes a barium sulfate enema.
Priority Applications (1)
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AU2003289205A AU2003289205A1 (en) | 2003-01-16 | 2003-12-05 | Injection auxiliary tool |
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JP2003-8182 | 2003-01-16 | ||
JP2003008182 | 2003-01-16 | ||
JP2003-100788 | 2003-04-03 | ||
JP2003100788 | 2003-04-03 |
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PCT/JP2003/015602 WO2004062713A1 (en) | 2003-01-16 | 2003-12-05 | Injection auxiliary tool |
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AU (1) | AU2003289205A1 (en) |
WO (1) | WO2004062713A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008117940A1 (en) * | 2007-03-26 | 2008-10-02 | Korea Research Institute Of Chemical Technology | Automatic video instillator |
US7988677B2 (en) | 2001-05-24 | 2011-08-02 | Covidien Ag | Hand-held, hand-operated power syringe and methods |
EP2387962A1 (en) * | 2010-05-17 | 2011-11-23 | Dermato-Plastica-Beauty (DPB) Co. Ltd. | Dispenser device |
US8672893B2 (en) | 2007-10-23 | 2014-03-18 | Control Medical Technology, Llc | Syringe with rotatable element, aspiration systems including the syringe, and associated methods |
US10058656B2 (en) | 2006-10-24 | 2018-08-28 | Pmt Partners, Llc | Syringe with rotatable element, systems including the syringe, and associated methods |
US20210113301A1 (en) * | 2018-05-04 | 2021-04-22 | 3M Innovative Properties Company | A Dispensing Gun For Dispensing A Dental Material |
US10987469B2 (en) | 2014-09-25 | 2021-04-27 | Pmt Partners, Llc | Rotatable finger loop for syringe, syringe configured to receive the rotatable finger loop and associated methods |
US11191931B2 (en) | 2007-10-01 | 2021-12-07 | Pmt Partners, Llc | Methods for manually injecting/aspirating fluids through small diameter catheters and needles and manual injection/aspiration systems including small diameter catheters and needles |
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US4526303A (en) * | 1982-11-05 | 1985-07-02 | Dentsply Research & Development Corp. | Syringes |
EP0474218A1 (en) * | 1990-09-04 | 1992-03-11 | Mentor Corporation | Medical paste syringe, filling method and paste injecting device |
WO1997007841A2 (en) * | 1995-08-25 | 1997-03-06 | Medrad, Inc. | Front load pressure jacket system with syringe holder |
WO1999008735A2 (en) * | 1997-08-14 | 1999-02-25 | Nycomed Imaging As | Hand-held manual injector |
JP2000116772A (en) * | 1998-10-20 | 2000-04-25 | Omi Kk | Extrusion implement for syringe |
-
2003
- 2003-12-05 AU AU2003289205A patent/AU2003289205A1/en not_active Abandoned
- 2003-12-05 WO PCT/JP2003/015602 patent/WO2004062713A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US4526303A (en) * | 1982-11-05 | 1985-07-02 | Dentsply Research & Development Corp. | Syringes |
EP0474218A1 (en) * | 1990-09-04 | 1992-03-11 | Mentor Corporation | Medical paste syringe, filling method and paste injecting device |
WO1997007841A2 (en) * | 1995-08-25 | 1997-03-06 | Medrad, Inc. | Front load pressure jacket system with syringe holder |
WO1999008735A2 (en) * | 1997-08-14 | 1999-02-25 | Nycomed Imaging As | Hand-held manual injector |
JP2000116772A (en) * | 1998-10-20 | 2000-04-25 | Omi Kk | Extrusion implement for syringe |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7988677B2 (en) | 2001-05-24 | 2011-08-02 | Covidien Ag | Hand-held, hand-operated power syringe and methods |
US8672900B2 (en) | 2001-05-24 | 2014-03-18 | Mallinckrodt Llc | Hand-held, hand-operated power syringe and methods |
US10058656B2 (en) | 2006-10-24 | 2018-08-28 | Pmt Partners, Llc | Syringe with rotatable element, systems including the syringe, and associated methods |
US10207057B2 (en) | 2006-10-24 | 2019-02-19 | Control Medical Technology, Llc | Syringe with rotatable element, systems including the syringe, and associated methods |
US11071827B2 (en) | 2006-10-24 | 2021-07-27 | Pmt Partners, Llc | Syringe with rotatable element, systems including the syringe, and associated methods |
WO2008117940A1 (en) * | 2007-03-26 | 2008-10-02 | Korea Research Institute Of Chemical Technology | Automatic video instillator |
US8453639B2 (en) | 2007-03-26 | 2013-06-04 | Korea Research Institute Of Chemical Technology | Automatic video instillator |
US11191931B2 (en) | 2007-10-01 | 2021-12-07 | Pmt Partners, Llc | Methods for manually injecting/aspirating fluids through small diameter catheters and needles and manual injection/aspiration systems including small diameter catheters and needles |
US8672893B2 (en) | 2007-10-23 | 2014-03-18 | Control Medical Technology, Llc | Syringe with rotatable element, aspiration systems including the syringe, and associated methods |
EP2387962A1 (en) * | 2010-05-17 | 2011-11-23 | Dermato-Plastica-Beauty (DPB) Co. Ltd. | Dispenser device |
US10987469B2 (en) | 2014-09-25 | 2021-04-27 | Pmt Partners, Llc | Rotatable finger loop for syringe, syringe configured to receive the rotatable finger loop and associated methods |
US20210113301A1 (en) * | 2018-05-04 | 2021-04-22 | 3M Innovative Properties Company | A Dispensing Gun For Dispensing A Dental Material |
Also Published As
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