WO2014020692A1 - 活栓流路切替装置 - Google Patents
活栓流路切替装置 Download PDFInfo
- Publication number
- WO2014020692A1 WO2014020692A1 PCT/JP2012/069435 JP2012069435W WO2014020692A1 WO 2014020692 A1 WO2014020692 A1 WO 2014020692A1 JP 2012069435 W JP2012069435 W JP 2012069435W WO 2014020692 A1 WO2014020692 A1 WO 2014020692A1
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- WIPO (PCT)
- Prior art keywords
- flow path
- blood pressure
- tube
- valve body
- switching
- Prior art date
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/223—Multiway valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/02141—Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
-
- 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
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M2039/229—Stopcocks
Definitions
- This invention relates to a stopcock flow path switching device connected to an injector head for introducing a contrast medium and other chemicals into a patient.
- a contrast medium is introduced into a patient using an injector head, and the test is performed in a state where the affected area is imaged.
- an intravascular operation is performed in which a narrowed lesion is expanded using a catheter method.
- left ventricular imaging that contrasts the left ventricle of the heart, the motion of the myocardium around the left ventricle is examined from the state of contraction and expansion of the heart.
- Such an injector head is disclosed in, for example, Japanese Patent Application Laid-Open No. 10-165396 (Patent Document 1) and Japanese Patent Application Laid-Open No. 10-244002 (Patent Document 2).
- a blood pressure transducer is used to measure a patient's blood pressure.
- a flow path for connecting the patient and the injector head hereinafter referred to as a contrast medium introduction flow path
- a flow path for connecting the patient and the transducer hereinafter referred to as the flow path
- a switching mechanism for switching between blood pressure measurement flow paths is provided.
- More accurate blood pressure measurement for patients is important when testing using an injector head. Also in the switching mechanism, it is important to employ a switching mechanism that does not affect blood pressure measurement when switching between the contrast medium introduction channel and the blood pressure measurement channel.
- the present invention has been made to solve the above-described problem, and includes a configuration capable of more accurately measuring a patient's blood pressure in switching between a contrast medium introduction channel and a blood pressure measurement channel. It is in providing a stopcock flow path switching device.
- a contrast medium introduction flow path for introducing a contrast medium into a patient using an injector head
- a blood pressure measurement flow path for measuring the blood pressure of the patient using a blood pressure transducer
- a stopcock flow path switching device used for switching between the patient side flow path and the injector head side flow path by switching the flow path switching cock.
- the flow path can be switched between a state in which the contrast medium introduction flow path is formed and a state in which the blood flow measurement flow path is formed by connecting the flow path on the patient side and the flow path on the blood pressure transducer side.
- a clamp mechanism for closing the flow path communicating with the injector head side of the three-way stopcock in a state where the blood pressure measurement flow path is formed.
- the clamp mechanism has a fixed valve body and a movable valve body that are opposed to each other so as to sandwich the first flow path outside the first flow path.
- the movable valve body In the state where the contrast medium introduction flow path is formed, the movable valve body is moved to the position farthest from the fixed valve body to open the first flow path, and in the state where the blood pressure measurement flow path is formed. Is moved to a position closest to the fixed valve body and sandwiches the first flow path together with the fixed valve body to shield the first flow path.
- the switching interlock mechanism is provided in the flow path switching cock, an eccentric cam roller having the same rotation center as the flow path switching cock, a support portion having a rotation center, and the support portion.
- the first link bar and the second link bar extending in different directions from the support portion, the movable valve body provided at the tip of the first link bar, and provided at the tip of the second link bar, And a sliding roller that always contacts the side surface of the eccentric cam roller.
- the sliding roller In the state in which the contrast medium introduction channel is formed, the sliding roller is positioned closest to the rotation center of the eccentric cam roller, and the movable valve body is positioned farthest from the fixed valve body. In the state in which the blood pressure measurement channel is formed, the sliding roller is located at a position furthest away from the rotation center of the eccentric cam roller, and the movable valve body is closest to the fixed valve body. Position.
- a stopcock is provided in the flow path on the blood pressure transducer side to open and close the flow path on the side opposite to the three-way stopcock with the blood pressure transducer interposed therebetween.
- the stopcock flow path switching device based on the present invention, has a configuration capable of more accurately measuring the blood pressure of the patient in switching between the contrast medium introduction flow path and the blood pressure measurement flow path. It is possible to provide a device.
- FIG. 4 is a view taken along line IV in FIG. 3. It is the side view seen from the V-line arrow in FIG. 6 of the syringe with which the injector head in related technology is mounted
- FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5 of a syringe attached to an injector head in the related art.
- FIG. 6 is a diagram showing a contrast medium introduction channel to a patient when a stopcock channel switching device is connected to the injector head in the first embodiment. It is a schematic diagram which shows an apparatus structure when the blood-pressure measurement flow path is selected in the switching interlocking mechanism employ
- FIG. 3 is a schematic diagram illustrating a device configuration when a contrast medium introduction channel is selected in a switching interlocking mechanism employed in the stopcock channel switching device according to the first embodiment.
- FIG. 6 is a diagram showing a state in which a contrast medium introduction channel is selected in a switching interlocking mechanism employed in the stopcock channel switching device according to the first embodiment.
- FIG. 5 is an overall perspective view showing a configuration of a syringe in a second embodiment. 6 is a side view showing a configuration of a syringe in a second embodiment.
- FIG. It is a figure which shows the flow path structure in related technology, and the structure of a chemical
- an injector head Before explaining the stopcock flow path switching device in the present embodiment, an injector head will be explained as a related technique.
- the same or corresponding parts are denoted by the same reference numerals, and the description thereof may not be repeated.
- the scope of the present invention is not necessarily limited to the number, amount and the like unless otherwise specified.
- the priming posture means a state in which a preparatory work (filling of a contrast agent into a syringe, etc.) is performed in preparation for the introduction of the contrast agent
- the posture capable of introducing the contrast agent is a posture in which the contrast agent introduction can be started from now on. And the posture during introduction of contrast medium introduction.
- FIGS. 1 is a side view showing the injector head 1 (priming posture)
- FIG. 2 is a view taken along the line II in FIG. 1
- FIG. 3 is a side view showing the injector head 1 (posture for introducing a contrast medium).
- 4 is a view taken along the line IV in FIG. 5 is a side view of the syringe attached to the injector head as seen from the direction of the arrow V in FIG. 6, and
- FIG. 6 is a view of the syringe attached to the injector head, taken along the line VI-VI in FIG. It is sectional drawing.
- the injector head 1 has a rotation mechanism, and can be rotated about a support column 900 as a support unit, a rotation unit 700 fixed to the support column 900 so that the rotation axis AL is substantially horizontal, and the rotation axis AL as a rotation center.
- a roller bearing or the like is used for the rotating unit 700.
- the chemical flow path switching device 600 is connected to the through-hole 512 provided at the tip of each of the first syringe 510A and the second syringe 510B. Details of the chemical flow path switching device 600 will be described later.
- an operation monitor 110 composed of a touch panel is provided (see FIG. 3).
- first syringe 510A and the second syringe 510B syringes having the shapes shown in FIGS. 5 and 6 are used.
- This syringe is provided on the rear end side with a cylindrical portion 514 provided with an opening in which the front end side is closed and the piston 511 is fitted in a liquid-tight manner on the rear end side, a through hole 512 provided on the front end side, and Provided flange 513.
- the piston 511 includes a piston rubber 511a and a piston core 511b covered with the piston rubber 511a.
- a plunger 100P built in the injector head main body 100 is connected to the piston core 511b.
- the cylindrical portion 514 is fixed to the injector head main body 100.
- the piston 511 also moves in the longitudinal direction on the cylindrical portion 514.
- the piston rubber 511a moves while maintaining liquid tightness with respect to the inner peripheral surface of the cylindrical portion 514.
- the through-hole 512 is provided in the syringe 510 in this Embodiment in the position eccentric with respect to the center axis line SL of the syringe 510.
- FIG. The central axis of the syringe 510 means a virtual line extending through the central axis of the syringe 510 to the front end side and the rear end side.
- the first syringe 510 ⁇ / b> A and the second syringe 510 ⁇ / b> B are viewed from a direction perpendicular to the rotation axis AL (perpendicular to the paper surface) in a state where the first syringe 510 ⁇ / b> A and the second syringe 510 ⁇ / b> B are attached to the injector head body 100.
- the center axis SL of the first syringe 510A and the center axis SL of the second syringe 510B are inclined with respect to the rotation axis AL.
- the angle ( ⁇ ) between the central axis SL and the rotation axis AL when viewed from a direction perpendicular to the rotation axis AL (perpendicular to the paper surface) is about 5 to 30 degrees, preferably 7 to 25 degrees. It is about 10 degrees, more preferably about 10 degrees to 15 degrees.
- injector head main body 100 has a substantially rectangular parallelepiped shape, and first syringe 510 ⁇ / b> A and second syringe 510 ⁇ / b> B are attached to first surface 100 a of injector head main body 100.
- the rotating portion 700 is fixed to the upper (third surface 100c side) corner region of the second surface 100b facing the surface 100a.
- a state in which the contrast medium Z is filled in the first syringe 510A and the second syringe 510B is shown.
- the third surface 100c located on the upper side between the first surface 100a and the second surface 100b rises from the second surface 100b side toward the first surface 100a side.
- the fourth surface 100d located on the lower side between the first surface 100a and the second surface 100b also rises from the second surface 100b side toward the first surface 100a side.
- the first syringe 510A and the second syringe 510B are mounted on the injector head main body 100 so that the through holes 512 of the first syringe 510A and the second syringe 510B are located on the uppermost side. .
- the first surface 100a and the second surface 100b As shown in FIGS. 3 and 4, in the posture in which the contrast medium can be introduced by rotating the injector head main body 100 about the rotation axis AL (in the direction of the arrow RA1 in FIG. 2), the first surface 100a and the second surface 100b.
- the fourth surface 100d located on the upper side between the second surface 100b is lowered from the second surface 100b side toward the first surface 100a side, and the lower side between the first surface 100a and the second surface 100b.
- the fourth surface 100d located at the bottom also descends from the second surface 100b side toward the first surface 100a side.
- the injector head 1 rotates the injector head main body 100 about the rotation axis AL, so that the through-hole 512 side of each of the first syringe 510A and the second syringe 510B is positioned above the injector head main body 100 side.
- the first syringe 510A and the second syringe 510B are given a priming posture (the state shown in FIGS. 1 and 2), and the first syringe 510A and the second syringe 510B through holes 512 side are the injector heads. Since the position is lower than the main body 100 side, it is possible to select a state (a state shown in FIG. 3 and FIG. 4) in which a contrast agent introduction posture is provided to the first syringe 510A and the second syringe 510B.
- the central axis SL of the first syringe 510 ⁇ / b> A is on the side of the through-hole 512 of the first syringe 510 ⁇ / b> A when viewed from a direction perpendicular to the rotation axis AL.
- Crosses AL. 3 and 4 the central axis SL of the first syringe 510A is the injector head main body 100 side of the first syringe 510A when viewed from a direction vertical and horizontal to the rotation axis AL.
- the injector head body 100 is mounted so as to intersect the rotational axis AL.
- the central axis SL of the second syringe 510B is rotated on the injector head main body 100 side of the second syringe 510B when viewed from a direction vertical and horizontal to the rotation axis AL.
- the central axis SL of the second syringe 510B is on the side of the through-hole 512 of the second syringe 510B when viewed from a direction perpendicular to the rotation axis AL and in the horizontal direction.
- the injector head body 100 is mounted so as to intersect the rotation axis AL.
- connection tube 12 extending from the chemical flow path switching device 600 connected to the 510A and the second syringe 510B stops moving around the rotation axis AL.
- the double syringe type injector head 1 using two syringes has been described.
- the present invention is not limited to two, and can be used as a single syringe type injector head using one of the syringes. is there.
- a syringe in which the through hole 512 is eccentric from the center axis CL is employed, but a syringe in which the through hole 512 is provided on the center axis CL can also be employed.
- a chemical fluid flow switching device 600 is connected to the first syringe 510A and the second syringe 510B attached to the injector head body 100. Details of the chemical flow path switching device 600 will be described later.
- the contrast medium introduction channel L1000 can be divided into a multi-use section S1 used for a plurality of patients, a single-use section S2 used for only one patient, and a single-use section S3.
- the multi-use section S1 will be described.
- a region including the injector head 1 surrounded by a dotted line in FIG. 7 is a multi-use section S1.
- the multi-use section S1 has a chemical flow path switching device 600.
- a seventh tube 15 is connected to the chemical liquid flow switching device 600, and a contrast agent bag 16 is connected to the seventh tube 15.
- the chemical liquid flow switching device 600 is connected to a connecting tube 12 that leads to the patient side.
- a connector 13 is connected to the distal end of the connecting tube 12.
- the single use section S2 has a main tube 17 to which a connector 14 is connected at one end and a connector 20 is connected to the other end.
- the connector 14 is connected to the connector 13 of the connecting tube 12.
- a branch tube 17a is connected to the main tube 17 using a T-shaped tube 17t.
- a connector 25 is connected to the tip of the branch tube 17a.
- the main tube 17 and the branch tube 17a are controlled by the contrast / blood pressure channel switching device 800 to open / close the main tube 17 and open / close the branch tube 17a.
- the contrast / blood pressure channel switching device 800 includes a switching valve body 801, a fixed valve body 802, and a fixed valve body 803, and the switching valve body 801 is controlled to be movable in the direction of arrow RA10 in the drawing.
- the switching valve body 801 and the fixed valve body 803 control the opening and closing of the main tube 17, and the switching valve body 801 and the fixed valve body 802 control the opening and closing of the branch tube 17a.
- the connector 25 of the branch tube 17 a is connected to a connector 26 provided on the physiological saline tube 19.
- the other end of the physiological saline tube 19 is connected to a physiological saline bag 27.
- the physiological saline tube 19 is provided with a stopcock 820, a blood pressure transducer 300, a roller pump 400, and a third air sensor AS3.
- the single use section S3 includes a tube 22 having a connector 21 connected to one end and a connector 23 connected to the other end.
- the connector 21 is connected to the connector 20 of the main tube 17.
- the connector 23 is connected to a catheter inserted into a patient's blood vessel.
- the branch tube 17a is closed and the main tube 17 is opened by the switching valve body 801 and the fixed valve body 802.
- the blood pressure of the patient is measured in a state where the main tube 17 is closed by the switching valve body 801 and the fixed valve body 803 and the branch tube 17a and the physiological saline bag 27 are in communication.
- an electrical signal obtained from the blood pressure transducer 300 is used.
- the main tube 17 is closed by the switching valve body 801 and the fixed valve body 803, the branch tube 17a is opened, and the branch tube 17a, the physiological saline bag 27, It is performed in a state where is communicated.
- the multiple use section S1 side portion of the main tube 17 viewed from the T-shaped tube 17t is sandwiched between the switching valve body 801 and the fixed valve body 803, so that the multiple use section S1 side of the patient's blood is obtained. To prevent intrusion.
- the region of the main tube 17 sandwiched between the fixed valve body 803 and the switching valve body 801 is located at a position distant from the multiple use section S1 side as viewed from the T-shaped tube 17t (distance S in the drawing). It is conceivable that the electrical signal obtained by the blood pressure transducer 300 becomes dull as the patient's blood pressure is the distance S. As a result, it may be necessary to correct the electrical signal obtained by the blood pressure transducer 300.
- FIG. 8 is a diagram showing a contrast medium introduction flow path L1000 to the patient when the stopcock flow path switching apparatus 800A according to the present embodiment is connected to the injector head 1.
- This stopcock flow path switching device 800A has a three-way stopcock 810.
- the three-way stopcock 810 includes a first tube (first flow path) 17A, a second tube (second flow path) 17B, and a third tube. (Third flow path) Each end of 17C is connected.
- the first tube 17A is connected to the injector head 1 side
- the second tube 17B is connected to the patient side
- the third tube 17C is connected to the blood pressure transducer 300 side.
- a connector 14 is provided at the other end of the first tube 17A.
- the connector 14 of the first tube 17A is connected to the connector 13 of the connection tube 12 provided in the multi-use section S1.
- a connector 20 is provided at the other end of the second tube 17B.
- the connector 20 of the second tube 17B is connected to the connector 21 of the tube 22 provided in the single use section S3.
- a connector 25 is provided at the other end of the third tube 17C.
- the connector 25 of the third tube 17 ⁇ / b> C is connected to a connector 26 provided on the physiological saline tube 19.
- the third tube 17C is provided with a blood pressure transducer 300 and a stopcock 820.
- the blood pressure transducer 300 and the stopcock 820 may be provided on the side of the physiological saline tube 19 as described with reference to FIG.
- the three-way cock 810 communicates the first tube 17A and the second tube 17B by rotating the flow path switching cock 810d using a drive motor, and closes the third tube 17C to connect the patient and the injector head.
- a blood pressure measurement flow path that connects the patient and the transducer by connecting the first tube 17A and the third tube 17C and closing the second tube 17B. Switching to the state to be formed is provided.
- the stopcock flow path switching device 800A has a clamp mechanism 812 that controls opening and closing of the first tube 17A.
- the clamp mechanism 812 includes a fixed valve body 821a and a movable valve body 812b that are arranged to face each other so as to sandwich the first tube 17A outside the first tube 17A.
- the stopcock flow path switching device 800A includes a switching interlock mechanism 815 that links the opening / closing operation of the clamp mechanism 812 with the rotation operation of the flow path switching cock 810d.
- FIG. 9 is a schematic diagram showing a device configuration when the blood pressure measurement channel is selected in the switching interlock mechanism 815
- FIG. 10 is a diagram showing a state where the blood pressure measurement channel is selected in the switching interlock mechanism 815.
- FIG. 11 is a schematic diagram showing a device configuration when the contrast medium introduction channel is selected in the switching interlock mechanism 815
- FIG. 12 shows a state in which the contrast agent introduction channel is selected in the switching interlock mechanism 815.
- the switching interlock mechanism 815 includes a support portion 813 having a rotation center C2.
- the support portion 813 is provided with a first link bar 813a and a second link bar 813b extending from the support portion 813 in different directions.
- a movable valve body 812b is attached to the tip of the first link bar 813a.
- the movable valve body 812b has a cylindrical shape, and is fixed to the first link bar 813a so as to be rotatable about its axis.
- the angle at which the first link bar 813a and the second link bar 813b intersect is about 135 degrees. Note that the intersecting angle can be appropriately changed according to the apparatus configuration.
- a sliding roller 814 is attached to the tip of the second link bar 813b.
- the sliding roller 814 has a cylindrical shape, and is fixed to the second link bar 813b so as to be rotatable about its axis.
- the sliding roller 814 is given a biasing force F so as to always come into contact with the side surface of the eccentric cam roller 816.
- a biasing force F so as to always come into contact with the side surface of the eccentric cam roller 816.
- the flow path switching cock 810d of the three-way cock 810 is provided with an eccentric cam roller 816 having the same rotation center C1.
- the rotation angle of the flow path switching cock 810d and the eccentric cam roller 816 is controlled by a driving device using a servo motor or the like, and the rotation position is controlled in the same way.
- the sliding roller 814 is located at a position furthest away from the rotation center C1 of the eccentric cam roller 816.
- the flow path switching cock 810d of the three-way cock 810 is in a state of connecting the second port 810b and the third port 810c.
- the movable valve body 812b is positioned closest to the fixed valve body 812a, and the first tube 17A is closed.
- a state is obtained in which a blood pressure measurement channel that connects the patient and the blood pressure transducer 300 is formed.
- the stopcock 820 provided in the third tube 17C is set so that the third tube 17C is closed.
- a one-way valve that allows a physiological saline flow from the roller pump 400 side toward the patient side may be provided.
- the flow path switching cock 810d of the three-way cock 810 is in a state of connecting the first port 810a and the second port 810b.
- the movable valve body 812b of the clamp mechanism 812 is located farthest from the fixed valve body 812a, and opens the first tube 17A.
- a state is obtained in which a connected contrast medium introduction channel is formed.
- the flow path switching cock 810d is rotated 90 degrees counterclockwise.
- stopcock flow path switching apparatus 800A in the present embodiment using three-way stopcock 810, first tube 17A and second tube 17B are communicated, third tube 17C is closed, and the patient, injector head, and A blood pressure measurement flow path that connects the patient and the transducer by connecting the first tube 17A and the third tube 17C and closing the second tube 17B. Switching to the state to be formed is performed. Thereby, since the blood pressure of the patient is added to the blood pressure transducer through the three-way cock 810, the blood pressure of the patient can be measured more accurately.
- stopcock flow path switching apparatus 800A by adopting switching interlocking mechanism 815, in a state in which a blood pressure measurement flow path for connecting a patient and a transducer is formed, it is connected to the injector head side by a link mechanism.
- the first tube 17 ⁇ / b> A is closed by the clamp mechanism 812. Thereby, it is also possible to prevent the infectious substance from entering the injector head when measuring the blood pressure of the patient.
- any valve body may be a movable valve body. It is.
- FIG. 13 is an overall perspective view showing the configuration of the syringe in the present embodiment
- FIG. 14 is a side view showing the configuration of the syringe in the present embodiment
- FIG. 15 is a channel configuration and a contrast agent channel in the related art.
- FIG. 16 is a diagram illustrating the configuration of the switching device
- FIG. 16 is a diagram illustrating the configuration of the flow channel and the configuration of the contrast medium flow switching device when the syringe according to the present embodiment is employed.
- the basic configuration of syringe 510 ⁇ / b> C in the present embodiment is the same as syringes 510 ⁇ / b> A and 510 ⁇ / b> B described using FIGS. 5 and 6, and the difference is cylindrical portion 514.
- Two through holes 512A and 512B are provided side by side on the same side.
- the chemical liquid flow switching device 600 should be indicated by a broken line because the main device is located on the opposite side of the device, but for the sake of convenience of description, it is indicated by a solid line in FIG.
- the injector head body 100 is equipped with a first syringe 510A filled with a contrast medium Z and a second syringe 510B filled with a contrast medium Z.
- a first piston 511A connected to the first plunger 100Pa is provided inside the first syringe 510A
- a second piston 511B connected to the second plunger 100Pb is provided inside the second syringe 510B.
- One end of the first tube 10A is connected to the first syringe 510A.
- the other end of the first tube 10A is connected to the first T-tube 11A.
- One end of each of the third tube 111A and the fifth tube 112A is connected to the first T-shaped tube 11A.
- One end of the second tube 10B is connected to the second syringe 510B.
- the other end of the second tube 10B is connected to the second T-shaped tube 11B.
- One end of each of the fourth tube 111B and the sixth tube 112B is connected to the second T-shaped tube 11B.
- the other ends of the third tube 111A and the fourth tube 111B are connected to the third T-shaped tube 11C.
- a seventh tube 15 whose other end is connected to the contrast agent bag 16 is connected to the third T-shaped tube 11C.
- each of the fifth tube 112A and the sixth tube 112B is connected to the fourth T-tube 11D.
- a connection tube 12 having the other end connected to the connector 13 is connected to the fourth T-shaped tube 11D.
- the connecting tube 12 is provided with a first air sensor AS1 that detects the mixing of air into the tube, and the seventh tube 15 is provided with a second air sensor AS2 that detects the mixing of air into the tube.
- a chemical channel switching device 600 for switching between opening and closing of the third tube 111A and opening and closing of the fifth tube 112A is provided.
- the chemical liquid channel switching device 600 includes a first channel switching mechanism 600A and a contrast / blood pressure channel switching mechanism 600B.
- the first flow path switching mechanism 600A is provided to switch between the third tube 111A and the fifth tube 112A arranged in parallel, and the contrast / blood pressure flow path switching mechanism 600B is provided in the fourth tube 111B arranged in parallel. And the sixth tube 112B.
- the first flow path switching mechanism 600A includes a first switching valve body 603 that is arranged between the third tube 111A and the fifth tube 112A and is provided so as to be movable in a direction that intersects the direction in which each tube extends. is doing. Further, the first flow path switching mechanism 600A has a first fixed valve body 601 and a second fixed valve body 602 at positions where the first switching valve body 603 faces each other with each tube interposed therebetween.
- the contrast / blood pressure channel switching mechanism 600B is disposed between the fourth tube 111B and the sixth tube 112B, and is provided so as to be movable in a direction intersecting with the extending direction of each tube. It has a body 606. Further, the contrast / blood pressure channel switching mechanism 600B includes a third fixed valve body 604 and a fourth fixed valve body 605 at positions where the second switching valve body 606 is opposed to each other with each tube interposed therebetween.
- one end of the third tube 111A is connected to the through hole 512A of the syringe 510C1, and one end of the fifth tube 112A is connected to the through hole 512B of the syringe 510C1. ing.
- the use of the first T-shaped tube 11A is not necessary.
- one end of the fourth tube 111B is connected to the through hole 512A of the syringe 510C2, and one end of the sixth tube 112B is connected to the through hole 512B of the syringe 510C2. It is connected to.
- the use of the second T-shaped tube 11B is unnecessary.
- 1 Injector head 10A 1st tube, 10B 2nd tube, 11A 1st T-shaped tube, 11B 2nd T-shaped tube, 11C 3rd T-shaped tube, 11D 4th T-shaped tube, 12 connecting tube, 13, 14, 20, 21, 25, 26, connector, 15 seventh tube, 16 contrast medium bag, 17 main tube, 17A first tube (first flow path), 17B second tube (second flow path), 17C third tube (third flow) Road), 17a branch tube, 17t T-shaped tube, 19 physiological saline tube, 22 tube, 27 physiological saline bag, 100 injector head body, 100Pa first plunger, 100Pb second plunger, 100a first surface, 100b second Surface, 100c third surface, 100d fourth surface, 110 operation monitor, 11 A 3rd tube, 111B 4th tube, 112A 5th tube, 112B 6th tube, 300 blood pressure transducer, 400 roller pump, 510A, 510B, 510C, 510C1, 510C2 syringe, 511 piston, 5
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Abstract
Description
図1から図6を参照して、インジェクタヘッド1について説明する。図1は、インジェクタヘッド1を示す側面図(プライミング姿勢)、図2は、図1中のII線矢視図、図3は、インジェクタヘッド1を示す側面図(造影剤導入可能姿勢)、図4は、図3中のIV線矢視図である。また、図5は、インジェクタヘッドに装着されるシリンジの、図6中V線矢視から見た側面図、図6は、インジェクタヘッドに装着されるシリンジの、図5中VI-VI線矢視断面図である。
次に、図7を参照して、上記構成を備えるインジェクタヘッド1を用いた、患者への造影剤導入流路L1000について説明する。インジェクタヘッド本体100に装着された第1シリンジ510Aおよび第2シリンジ510Bには、薬液流路切替装置600が連結されている。この薬液流路切替装置600の詳細については後述する。
そこで、図8を参照して、本実施の形態における造影/血圧流路切替装置としての活栓流路切替装置800Aについて説明する。図8は、インジェクタヘッド1に本実施の形態における活栓流路切替装置800Aを連結した場合の患者への造影剤導入流路L1000を示す図である。
図9から図12を参照して、本実施の形態における切替連動機構815について説明する。図9は、切替連動機構815において、血圧測定流路が選択された場合の装置構成を示す模式図、図10は、切替連動機構815において血圧測定流路が選択された状態を示す図である。また、図11は、切替連動機構815において造影剤導入流路が選択された場合の装置構成を示す模式図、図12は、切替連動機構815において造影剤導入流路が選択された状態を示す図である。
次に、図13から図16を参照して、本実施の形態におけるインジェクタヘッドに装着されるシリンジ510Cについて説明する。図13は、本実施の形態におけるシリンジの構成を示す全体斜視図、図14は、本実施の形態におけるシリンジの構成を示す側面図、図15は、関連技術における流路構成および造影剤流路切替装置の構成を示す図、図16は、本実施の形態におけるシリンジを採用した場合の流路構成および造影剤流路切替装置の構成を示す図である。
第3チューブ111Aの開閉と第5チューブ112Aの開閉とを切り換えるための薬液流路切替装置600が設けられている。この薬液流路切替装置600は、第1流路切替機構600Aと造影/血圧流路切替機構600Bとを有している。
Claims (5)
- インジェクタヘッド(1)を用いて患者に造影剤を導入する造影剤導入流路と、血圧トランスジューサ(300)を用いて前記患者の血圧を測定する血圧測定流路と、の切替に用いられる活栓流路切替装置であって、
流路切替コック(810d)を有し、前記流路切替コック(810d)の切替により、前記患者側の流路と前記インジェクタヘッド(1)側の流路とを連結して前記造影剤導入流路を形成する状態と、前記患者側の流路と前記血圧トランスジューサ(300)側の流路とを連結して前記血圧測定流路を形成する状態との流路切替が可能に設けられた三方活栓(810)と、
前記血圧測定流路を形成する状態において、前記三方活栓(810)の前記インジェクタヘッド(1)側に連通する流路を閉鎖するクランプ機構(812)と、
を備える、活栓流路切替装置。 - 前記造影剤導入流路を形成する状態においては、前記三方活栓(810)に連結される前記インジェクタヘッド(1)側に連通する第1流路(17A)を開放し、前記血圧測定流路を形成する状態においては、前記三方活栓(810)に連結される前記インジェクタヘッド(1)側に連通する前記第1流路(17A)を遮蔽するように、前記三方活栓(810)の前記流路切替コック(810d)の切替位置に応じて、前記クランプ機構(812)の制御を行なう切替連動機構(815)をさらに備える、請求項1に記載の活栓流路切替装置。
- 前記クランプ機構(812)は、前記第1流路(17A)の外側において、前記第1流路(17A)を挟み込むように対向配置される固定弁体(821a)と可動弁体(812b)とを有し、
前記切替連動機構(815)は、
前記造影剤導入流路を形成する状態においては、前記可動弁体(812b)を、前記固定弁体(821a)から最も離れる位置に移動させて前記第1流路(17A)を開放し、前記血圧測定流路を形成する状態においては、前記固定弁体(821a)に最も近接する位置に移動させて前記固定弁体(821a)とともに前記第1流路(17A)を挟み込んで前記第1流路(17A)を遮蔽する、請求項2に記載の活栓流路切替装置。 - 前記切替連動機構(815)は、
前記流路切替コック(810d)に設けられ、前記流路切替コック(810d)と回転中心(C1)が同一に設けられた偏芯カムローラ(816)と、
回転中心(C2)を有する支持部(813)と、
前記支持部(813)に設けられ、前記支持部(813)から異なる方向に延びる第1リンクバー(813a)および第2リンクバー(813b)と、
前記第1リンクバー(813a)の先端に設けられる前記可動弁体(812b)と、
前記第2リンクバー(813b)の先端に設けられ、常に前記偏芯カムローラ(816)の側面に当接する摺動ローラ(814)と、を備え、
前記造影剤導入流路を形成する状態においては、前記摺動ローラ(814)は、前記偏芯カムローラ(816)の前記回転中心(C1)に最も近接する位置に位置するとともに、前記可動弁体(812b)は前記固定弁体(821a)から最も離れる位置となり、
前記血圧測定流路を形成する状態においては、前記摺動ローラ(814)は、前記偏芯カムローラ(816)の前記回転中心(C1)から最も遠ざかる位置に位置するとともに、前記可動弁体(812b)は前記固定弁体(821a)に最も近接する位置となる、請求項3に記載の活栓流路切替装置。 - 前記血圧トランスジューサ(300)側の流路おいて、前記血圧トランスジューサ(300)を挟んで前記三方活栓(810)と反対側の前記流路の開閉を行なう活栓(820)が設けられている、請求項1から4のいずれかに記載の活栓流路切替装置。
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PCT/JP2012/069435 WO2014020692A1 (ja) | 2012-07-31 | 2012-07-31 | 活栓流路切替装置 |
JP2014527864A JP5925320B2 (ja) | 2012-07-31 | 2012-07-31 | 活栓流路切替装置 |
CN201280074978.1A CN104507527B (zh) | 2012-07-31 | 2012-07-31 | 旋塞阀流路切换装置 |
US14/418,942 US9901730B2 (en) | 2012-07-31 | 2012-07-31 | Stopcock flow path switching device |
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Cited By (3)
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WO2019021985A1 (ja) * | 2017-07-25 | 2019-01-31 | 株式会社ジェイ・エム・エス | 薬液調製装置 |
WO2021149664A1 (ja) | 2020-01-20 | 2021-07-29 | ディーブイエックス株式会社 | 造影剤注入装置及び注入ラインキット |
WO2023242896A1 (ja) * | 2022-06-13 | 2023-12-21 | スーガン株式会社 | コック切替機構 |
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WO2013104665A1 (en) * | 2012-01-09 | 2013-07-18 | Sanofi-Aventis Deutschland Gmbh | Cartridge hub with active valve |
CN108771771B (zh) * | 2018-04-13 | 2020-06-30 | 中国人民解放军陆军军医大学第一附属医院 | 用于取***注射材料的冲吸装置 |
CN110869069B (zh) * | 2018-09-05 | 2021-04-06 | 深圳市迈威生物科技有限公司 | 可弃组件及流体输送*** |
US20210228859A1 (en) * | 2020-01-27 | 2021-07-29 | Becton, Dickinson And Company | Syringe Actuated Stopcock Smart-Valve |
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WO2019021985A1 (ja) * | 2017-07-25 | 2019-01-31 | 株式会社ジェイ・エム・エス | 薬液調製装置 |
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WO2021149664A1 (ja) | 2020-01-20 | 2021-07-29 | ディーブイエックス株式会社 | 造影剤注入装置及び注入ラインキット |
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