WO2017033449A1 - Aiguille à demeure - Google Patents

Aiguille à demeure Download PDF

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Publication number
WO2017033449A1
WO2017033449A1 PCT/JP2016/003804 JP2016003804W WO2017033449A1 WO 2017033449 A1 WO2017033449 A1 WO 2017033449A1 JP 2016003804 W JP2016003804 W JP 2016003804W WO 2017033449 A1 WO2017033449 A1 WO 2017033449A1
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WO
WIPO (PCT)
Prior art keywords
housing
needle
needle hub
tip
arm
Prior art date
Application number
PCT/JP2016/003804
Other languages
English (en)
Japanese (ja)
Inventor
貴子 三宅
隼平 島本
直己 中川
Original Assignee
ニプロ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ニプロ株式会社 filed Critical ニプロ株式会社
Priority to JP2017536613A priority Critical patent/JP6777083B2/ja
Publication of WO2017033449A1 publication Critical patent/WO2017033449A1/fr

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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
    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Definitions

  • the present disclosure relates to an indwelling needle, and particularly to an indwelling needle having a safety mechanism.
  • a safety mechanism for preventing erroneous puncture after use is desired.
  • a safety mechanism a structure in which a needle hub to which a puncture needle is attached is slid and accommodated in a housing is known. There are one in which the needle hub is accommodated manually and another in which the needle hub is accommodated using a moving mechanism such as a spring. Those that manually house the needle hub are difficult to operate with one hand. By providing the moving mechanism, the accommodating operation with one hand becomes possible.
  • an indwelling needle having a needle hub moving mechanism for example, an indwelling needle having an arm having a needle hub, a housing for housing the needle hub, and a spring for moving the needle hub is known (see, for example, Patent Document 1). .)
  • the arm is engaged with the housing, the needle hub is accommodated in the housing so that the needle tip is exposed, and the needle hub is moved to the proximal side by releasing the arm engagement after use.
  • the needle tip can be accommodated in the housing by being moved.
  • the engagement between the arm and the housing can be released with one hand by pushing an operation button provided on the arm.
  • the indwelling needle having the needle hub moving mechanism also has a problem that it is liable to malfunction due to erroneous touching of the operation button.
  • the problem of the present disclosure is to realize an indwelling needle that is unlikely to malfunction.
  • a first aspect of the indwelling needle includes a needle hub to which a puncture needle protruding in the distal direction is fixed, a wing extending in a direction crossing the needle axis direction, a housing that accommodates the needle hub, and a needle hub.
  • the hub has a movement restricting portion that releasably restricts movement from the first position, and the operation portion is integrated with the housing, and a fixed portion fixed to the housing and a position closer to the distal end than the fixed portion. The movement part is released, and the movement mechanism is operated by releasing the restriction by the movement restriction part.
  • the action part that acts on the movement restricting part is located on the distal end side of the fixed part fixed to the housing in the operating part, the size of the indwelling needle including the operating part can be easily reduced. Further, since the wing portion is provided, it is difficult for a human hand to touch the operating portion unintentionally from the product packaging until use. The risk of gripping only the action part that acts on the movement restricting part can be reduced, and it is possible to prevent the user from unintentionally releasing the movement restricting part, resulting in malfunction. It can be difficult. Further, by making the operation portion and the housing an integral member, it is possible to increase the force required for the operation and to prevent malfunction.
  • the operation portion can be provided on both side surfaces of the housing. With such a configuration, malfunction prevention and ease of operation are improved. Further, the provision of the wing portion improves the prevention of malfunction during transportation.
  • the action part may be located between the wing part and the fixed part. Since the action part is positioned between the wing part and the fixed part, it is difficult for a human hand to touch the action part. Further, the wing portion may have a notch provided in the base end portion, and the action portion may be located at the notch portion. By setting it as such a structure, it becomes difficult to touch a human hand to an action
  • the action part when the restriction by the movement restriction part is released, the action part can be moved from a standby position that is not in contact with the movement restriction part to an operating position that presses the movement restriction part. .
  • the restriction can be released when the action part is moved to a certain degree or more, so that it is difficult to cause a malfunction.
  • the movement restricting portion can be a plurality of arms extending in the distal direction from the side surface of the needle hub.
  • a second aspect of the indwelling needle includes a needle hub to which the puncture needle is fixed, a housing that accommodates the needle hub, and the needle hub from the first position where the tip of the puncture needle protrudes from the tip of the housing.
  • a moving mechanism that moves the distal end of the housing to a second position accommodated in the housing, an operation portion that rotates the end portion with respect to the housing by pressing inward, and operates the moving mechanism; And a resistance portion that serves as a resistance to rotation of the portion.
  • the resistance portion can be a flexible piece that protrudes elastically deformable from the outer surface of the housing or the inner surface of the operation portion. Such a configuration facilitates assembly. Further, the resistance portion can be formed of an elastic member different from the housing and the operation portion. With such a configuration, the degree of freedom in design is improved.
  • the operation portion includes an operation portion main body, an engagement portion provided at an end portion of the operation portion main body so as to be engageable with the needle hub, and an assembly portion assembled to the housing.
  • the assembly portion can fix the operation portion to be rotatable with respect to the housing, and the engagement portion can be moved outward to release the engagement with the needle hub.
  • the assembly part can be provided between the engagement part and the operation button.
  • the needle hub has an arm that engages with the housing
  • the operation unit has an operation unit main body
  • an operation button provided on the operation unit main body.
  • the first end portion is pivotally fixed to the housing via the assembly portion, the second end portion is disposed at a position corresponding to the arm, and the second end portion presses the operation button inward. Accordingly, the arm and the housing can be disengaged by moving inward.
  • a third aspect of the indwelling needle includes a needle hub to which the puncture needle is fixed, a housing that houses the needle hub, and the needle hub from the first position where the tip of the puncture needle protrudes from the tip of the housing.
  • a moving mechanism that moves the distal end of the housing to a second position accommodated in the housing, an operation portion that rotates the end portion with respect to the housing by pressing inward, and operates the moving mechanism; And a resistance portion that restricts the rotation of the portion with an elastic force.
  • a fourth aspect of the indwelling needle includes a needle hub to which a puncture needle is fixed, a housing that accommodates the needle hub, and a needle hub from the first position where the tip of the puncture needle protrudes from the tip of the housing.
  • a moving mechanism that moves the tip of the second housing to a second position accommodated in the housing, and an operation unit that operates the moving mechanism by rotating the end with respect to the housing by pressing inward.
  • the operation portion is provided at the operation portion main body, an engagement portion provided at the end portion of the operation portion main body so as to be engageable with the needle hub, and the other end portion of the operation portion main body positioned on the distal end side from the engagement portion.
  • the operation part is integral with the housing, and when the operation button is pressed inward, the engaging part moves outward to operate the moving mechanism.
  • an operation unit disabling unit that disables operation of the operation unit may be further provided.
  • a fifth aspect of the indwelling needle includes a needle hub to which the puncture needle is fixed, a housing that houses the needle hub, and the needle hub from the first position where the tip of the puncture needle protrudes from the tip of the housing.
  • a movement mechanism that moves the tip of the needle to a second position accommodated in the housing, and an arm that pivotably protrudes from the needle hub, and a movement restriction unit that releasably restricts movement from the first position.
  • a resistance portion that serves as a resistance for rotation of the arm.
  • the indwelling needle of the present disclosure it is possible to realize an indwelling needle that is unlikely to malfunction.
  • FIG. 2 is a cross-sectional view taken along line II-II in FIG. It is a front view which shows the indwelling needle which concerns on one Embodiment.
  • FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3.
  • the indwelling needle which concerns on one Embodiment it is sectional drawing which shows the state which latched the needle hub.
  • the indwelling needle which concerns on one Embodiment it is sectional drawing which shows the state which the movement of the needle hub was completed. It is sectional drawing which shows the modification of a locking mechanism. It is sectional drawing which shows the modification of an indwelling needle.
  • the side that becomes the patient side when using the instrument will be described as the distal end, and the opposite side as the proximal end.
  • the indwelling needle of this embodiment is an indwelling needle with a wing having a wing 103, and a needle hub 101 to which a puncture needle 111 protruding in the distal direction is fixed, and a needle hub 101
  • the housing 102 and the needle hub 101 are moved from a first position where the tip of the puncture needle 111 protrudes from the tip of the housing 102 to a second position where the tip of the puncture needle 111 is received in the housing 102.
  • the operation unit 105 is assembled to the housing 102 at a position closer to the proximal end than the wing unit 103, and the movement of the needle hub 101 is started by operating the operation unit 105.
  • the moving mechanism 104 is a coil spring, and is disposed between a needle hub flange 115 provided on the needle hub 101 and a housing flange 125 provided on the tip of the housing 102.
  • the moving mechanism 104 is compressed and biases the needle hub 101 toward the proximal end side.
  • the operation unit 105 includes a plate-shaped operation unit main body 150, an operation button 151 provided on the proximal end side of the operation unit main body 150, and a distal end side end of the operation unit main body 150.
  • An engaging portion 153 that can be engaged with the needle hub 101 and an assembly portion 154 that is provided between the engaging portion 153 and the operation button 151 and is assembled to the housing 102 are provided.
  • the engaging portion 153 is a convex portion that engages with the needle hub 101, and the movement of the needle hub 101 by the moving mechanism 104 can be restricted by engaging the engaging portion 153 with the needle hub 101.
  • the operation portion main body 150 is rotatably attached to the housing 102 by an attachment portion 154 provided in the vicinity of the center portion, and the operation portion main body 150 can rotate within a certain angle range around the attachment portion 154.
  • FIG. 5 when the operation button 151 provided on the proximal end side of the operation portion main body 150 is pressed toward the needle hub 101 side (inner side), the end portion on the distal end side moves outward, and the engagement is a convex portion. The engagement between the portion 153 and the needle hub 101 is released. As a result, the movement restriction of the needle hub 101 is released, and the moving mechanism 104 is operated. As shown in FIG. 6, the needle hub 101 moves from the first position to the second position, and the distal end portion of the puncture needle 111 is moved. Housed in the housing 102.
  • the assembly portion 154 is a convex portion protruding from the operation portion main body 150 and is engaged with a shaft hole 155 provided in the housing 102. Therefore, the assembly unit 154 functions as a fixing unit that fixes the operation unit 105 to the housing 102.
  • the configuration is not limited to this, and any configuration can be used as long as the operation unit main body 150 can be pivotally attached to the housing 102 with the assembly unit 154 as a fulcrum.
  • the assembly portion 154 can be a recess provided in the operation button 151 and can be engaged with a protrusion provided in the housing 102.
  • the operation part 105 should just be assembled
  • FIG. By assembling the operation unit 105 to the housing 102 by the assembling unit 154, the degree of freedom in design can be improved.
  • the shaft portion 112 of the needle hub 101 is cylindrical, and the puncture needle 111 is fixed to the distal end side.
  • a connecting portion of the tube 106 is provided on the rear end side.
  • An elastically deformable arm 113 that protrudes from the shaft 112 to both sides and extends toward the proximal end is provided at the center of the shaft 112.
  • the two arms 113 can be arranged symmetrically about the shaft portion 112, and can be, for example, V-shaped, U-shaped or C-shaped.
  • the arm 113 functions as a movement restricting portion that engages with the engaging portion 153 of the operation portion 105 in the first position and restricts the movement of the needle hub 101 by the moving mechanism 104.
  • the engaging portion 153 functions as an action portion that acts on the movement restricting portion to release the movement restriction of the needle hub 101.
  • it functions as a lock mechanism that engages with a through-hole 126 provided in the housing 102 and prevents the needle hub 101 from returning to the distal end side or coming off the housing 102. It can also be set as the recessed part which is not penetrating instead of the through-hole 126.
  • the needle hub 101 returns to the distal end side by an elastically deformable protrusion 128 provided at the rear end of the housing 102 as shown in FIG. It is also possible to provide a lock mechanism for limiting the above.
  • the protrusion 128 may be a tongue-like flexible piece in which a part of the housing 102 is cut out.
  • the protrusion 128 has a small inclination angle of the inclined surface on the distal end side and can easily get over when the needle hub 101 contacts from the distal end side, but the inclination angle of the inclined surface on the proximal end side is 90 ° or more. When the needle hub 101 comes into contact with the base end side, it is difficult to deform and it is difficult to get over. For this reason, it is possible to restrict the needle hub 101 from returning from the second position to the first position.
  • FIG. 7 shows an example in which a notch 117 that abuts against the protrusion 128 is provided in the portion of the shaft portion 112 of the needle hub 101 that has a large diameter.
  • any configuration may be used as long as a part of the needle hub 101 can abut the protrusion 128 to restrict movement.
  • 7 shows an example in which the protrusion 128 is provided at the center portion of the housing 102 and engages with the shaft portion 112 of the needle hub 101.
  • the position of the protrusion 128 is changed to engage with the arm 113. May be.
  • the example which provides the protrusion 128 in the upper and lower surfaces of the housing 102 was shown, it can also be provided in the side surface of the housing 102.
  • the indwelling needle of this embodiment does not operate the arm 113 directly from the outside of the housing 102 when operating the moving mechanism 104. For this reason, the operation button is not provided on the arm 113, the arm 113 can be made smaller, and the inner diameter and the outer diameter of the portion of the housing 102 through which the arm 113 passes can be made smaller.
  • the arm 113 that not only engages with the operation unit 105 at the first position but also functions as a lock mechanism at the second position is shown.
  • the shaft portion 112 may be provided with a concave portion that engages with the convex portion that is the engaging portion 153.
  • the inner diameter of the housing 102 can be further reduced as compared with the case where the arm 113 is provided.
  • an elastically deformable locking convex portion can be provided on the housing 102 as the locking mechanism so as to engage with the concave portion of the needle hub 101.
  • a locking recessed portion that engages with the locking convex portion may be provided.
  • the engaging portion 153 of the operation button 151 is a convex portion
  • a configuration in which the engaging portion is a concave portion and is engaged with the arm 113 may be employed. In this case, if it can be engaged with the engaging part which is a recessed part, the structure of convex parts other than the arm 113 can also be provided in the axial part 112.
  • the housing 102 has a front part 121 to which the wing part 103 is attached, and a rear part 122 that is provided on the base end side with respect to the front part 121 and is wider than the front part 121.
  • the front portion 121 of the housing 102 has a cylindrical shape
  • the rear portion 122 has a flat cylindrical shape in which the width in the direction in which the wing portion 103 expands is wider than the height so that the arm 113 that extends laterally can pass therethrough.
  • the outer diameter of the front part 121 is slightly smaller than the height of the rear part 122 in consideration of attaching the wing part 103.
  • the arm 113 may not pass through, and the inner diameter and the outer diameter can be made smaller than the rear part 122 through which the arm 113 passes. If the front part 121 and the rear part 122 having different outer diameters are smoothly connected without a large step, it is possible to avoid the corners from hitting and pressing the patient's body.
  • the arm 113 is configured to extend toward the proximal end side.
  • the portion of the needle hub 101 having the maximum width can be on the rear end side as compared with the case where the arm 113 extends toward the distal end side.
  • the design freedom of the length of the front portion 121 is increased, and a balanced indwelling needle with good operability can be realized.
  • it can also be set as the structure which has an arm extended toward the front end side.
  • a window portion 123 a having an open side surface is provided in an intermediate portion 123 between the front portion 121 and the rear portion 122.
  • shaft holes 155 are provided on the upper surface and the lower surface of the housing 102 to engage with the assembly portion 154 that is a convex portion provided on the operation unit main body 150.
  • the shaft hole 155 may be a recess instead of the through hole.
  • the engaging portion 153 of the operation portion 105 enters the housing 102 from the window portion 123a when the operation button 151 is not pressed, and is releasably engaged with the arm 113 of the needle hub 101.
  • a resistance unit 127 that acts as a resistance to movement of the operation unit 105 toward the housing 102 and restricts movement.
  • the resistance portion 127 By providing the resistance portion 127, the pressing force required to move the operation button 151 toward the housing 102 is increased, and it is possible to make it difficult for the operation button 151 to malfunction.
  • the operation unit 105 can be naturally returned to the original position.
  • the resistance portion 127 is an elastic piece that is provided on the rear end side of the window portion 123a and protrudes from the side surface of the housing 102 so as to be elastically deformable.
  • the elastic piece which is the resistance portion 127 is formed by folding a thin plate integrated with the housing 102 into a U shape.
  • the elastic piece is in contact with the inner surface of the operation button 151 of the operation unit main body 150. Since the elastic piece generates an outward elastic force, it acts as a resistance to the inward movement of the operation button 151.
  • the operation button 151 can be returned to the original position after being pressed.
  • the resistance portion 127 is an elastic piece integrally formed with the housing 102
  • a small piece of an elastic member such as resin or metal is inserted between the housing 102 and the operation portion 150 to form the resistance portion 127.
  • the elastic piece is not limited to a plate-like body, but can be formed of a linear body such as a wire. Further, an elastic member such as a compressible rubber formed into a block shape or a coil spring or the like can be used. In the present embodiment, an example in which the elastic piece extends toward the proximal end side has been described, but a configuration in which the elastic piece extends toward the distal end side may be employed. Further, the elastic piece can be fixed to the operation unit 105 side instead of being fixed to the housing 102 side.
  • the resistance part does not insert an elastic member or the like inside the operation part so as to resist the movement of the operation button to the inside, but a spring member such as a pinch ring is installed outside the operation part. And it can also be set as the structure which becomes resistance of the movement of the outer side of an engaging part.
  • the operation unit 105 has the engagement portion 153 that engages with the needle hub 101 is shown.
  • the needle hub 201 is engaged with the housing 202, and the operation unit 205 can release the engagement.
  • the indwelling needle according to the modification has an arm 213 in which the needle hub 201 engages with the housing 202.
  • the operation unit 205 is provided with an operation button 251, and a first end is rotatably fixed to the housing 202 via an assembly unit 254 which is a fulcrum shaft, and a second end which is an action unit 253 is an arm.
  • the operation unit main body 250 is disposed at a position corresponding to 213.
  • the moving mechanism 204 can be a coil spring disposed between a needle hub flange 215 provided on the needle hub 201 and a housing flange 225 provided on the distal end portion of the housing 202.
  • the arm 213 is engaged with the edge of the window portion 223a.
  • the end portion of the arm 213 may be engaged with a through hole provided in the housing 202.
  • FIG. 8 a configuration in which an assembly portion 254 that is a fulcrum shaft is provided at an end portion on the proximal end side to become a fixed portion, and a movable second end portion that becomes an action portion 253 is located on the distal end side with respect to the fixed portion. showed that.
  • a housing can be reduced in size compared with the case where an action part exists in a base end side rather than a fixed part.
  • it can also be set as the structure which an action part is located in a base end side rather than a fixed part.
  • the arm extends to the base end side is shown.
  • the arm may be configured to extend toward the tip side.
  • the various configurations described above can be adopted as a connection mechanism between the operation unit main body 250 and the housing 202. Also, the various configurations described above can be adopted for the locking mechanism and the like in the second position. Further, the various configurations described above can also be adopted for the resistance portion.
  • the example in which the operation unit extends in the needle axis direction is shown, but the operation unit may extend in the vertical direction.
  • the example which attaches an operation part to a housing was shown, it can also provide in a structural member different from housings, such as a wing
  • the rotation of the operation unit does not receive resistance, but for example, as shown in FIG. 9, the rotation of the arm 113 which is a movement restricting unit provided in the needle hub 101 receives resistance.
  • a resistor 118 can also be provided.
  • the resistance portion 118 that serves as the resistance of rotation of the arm 113 is a flexible piece provided inside the arm 113, but various configurations are provided in the same manner as the resistance portion that serves as the resistance of rotation of the operation unit 105. Can be used.
  • the operation unit 205 is assembled to the housing 202 via the assembly unit 254.
  • the operation unit 205 has an operation unit integrated with the housing. You can also In this case, the resistance portion 227 that restricts the movement of the operation button 251 may not be provided.
  • the operation unit 305 and the housing 302 are an integrally formed body formed integrally.
  • the operation unit main body 350 of the operation unit 305 has a planar U shape integrally formed so as to be connected to the housing 302 at the first end.
  • the second end portion of the operation portion main body 350 is a free end that becomes the action portion 353 and is disposed at a position corresponding to the arm 313 that is a movement restricting portion.
  • the operation button 351 provided on the operation unit main body 350 is pressed inward (housing 302 side)
  • the second end serving as the action unit 353 is used with the first end serving as a fixed unit fixed to the housing 302 serving as a fulcrum.
  • the part rotates inward and moves from the standby position to the operating position.
  • the end of the arm 313 provided on the needle hub 301 is pressed, the engagement between the arm 313 and the housing 302 is released, the moving mechanism 304 is activated, and the needle hub 301 is moved from the first position.
  • the fixed portion of the operation portion 305 is located on the proximal end side of the housing 302, and the operation portion 305 is provided so as to have a length of about 10 mm to 35 mm in the distal direction from the fixed portion. Miniaturization can be achieved at the same time. Further, when it is desired to increase the pressure required to press the operation button 351, the operation unit 305 may be thickened.
  • the moving mechanism 304 can be a coil spring disposed between a needle hub flange 315 provided on the needle hub 301 and a housing flange 325 provided on the distal end portion of the housing 302.
  • the arm 313 extends to the tip side in the modification shown in FIG.
  • the operation part which acts on a movement control part in an operation part can be made easy to be located in the front end side.
  • the arm may be configured to extend to the proximal end side.
  • the arm 313 is provided on the base end side from the wing part, and this makes it possible to perform smoothly from the puncture to the movement mechanism operation, which is preferable.
  • the example which the arm 313 was engaging with the edge of the window part 323a was shown.
  • the end of the arm 313 may be engaged with a through hole provided in the housing 302.
  • the operation part as in this modified example, it is more effective to prevent the malfunctioning part from acting on the movement restricting part by being bent inward than the fixed part fixed to the housing. This is advantageous.
  • the action part that acts on the movement restriction of the needle hub can be positioned closer to the base end side than the fixed part fixed to the housing.
  • FIG. 10 shows an example in which the action portion 353 of the operation portion 305 is in contact with the end portion of the arm 313 that is a movement restricting portion at the standby position.
  • the action portion 353 of the operation portion 305 may not be in contact with the end portion of the arm 313 that is the movement restricting portion at the standby position.
  • the distance between the action part 353 of the operation part 305 and the end part of the arm 313 that is the movement restricting part in the standby position is that the action part 353 and the arm 313 are in contact with each other when the operation button 351 is pressed. From the viewpoint of enabling a person to sense, 0.3 mm or more is preferable. In addition, when the operation button 351 is pressed, 0.8 mm or more is preferable from the viewpoint of enabling the user to feel that the operation button has moved. Moreover, it is preferable to set it as 8.0 mm or less from a viewpoint which makes the load added to a fixing
  • interval of the action part 353 and the edge part of the arm 313 is the value measured in the direction orthogonal to a needle axis direction.
  • the wing portion 103 and the action portion 353 of the operation portion 305 are located on the distal end side of the housing 302 and the action portion 353 of the operation portion 305 is in the vicinity of the wing portion 103. It is more preferable that the action part 353 of the operation part 305 is located on a notch provided at the base end part of the wing part 103 in the viewpoint as shown in FIG. Further, in the arm 313, the distal end surface and the base end surface of the portion hooked with the housing 302 are tapered so that the thickness increases toward the outside.
  • the distal end surface and the proximal end surface of the through hole are tapered so that the space of the through hole provided in the housing 302 to which the arm 313 is caught after the movement mechanism 304 is actuated increases toward the outside. By doing so, it is possible to make it difficult for the housing 302 and the needle hub 301 to be separated after the movement mechanism 304 is actuated. It should be noted that the exposure of the needle is achieved by reducing the force required to separate the tube 106 and the needle hub 301 from the force required to separate the housing 302 and the needle hub 301 after the movement mechanism 304 is actuated. Accident risk can be reduced. Further, the surface of the housing 302 on which the arm 313 is caught before the movement mechanism 304 is tapered toward the front end side to increase the engagement force with the arm 313, thereby further preventing malfunction. be able to.
  • the first end portion of the operation portion is a fixed portion fixed to the housing, and the second end portion is an action portion acting on the movement restricting portion.
  • It can also be set as the structure by which parts other than are a fixing
  • it can be set as the structure by which the convex part which protruded from the middle of the operation part is an action part which presses the arm 313.
  • the fixed part is the end on the base end side.
  • the operation button can be reduced in size by being provided between the fixed portion fixed to the housing and the action portion.
  • the first end portion of the operation portion main body is fixed to the housing, and the operation portion having a configuration in which the second end portion moves inward by pressing the operation button inward is shown in FIG.
  • the operation portion can also be set as the operation part of the structure which a 2nd edge part moves outside.
  • the operation unit main body 450 of the operation unit 405 is formed integrally with the housing 402, and is integrally connected to the housing 402 between the engagement unit 453 and the operation button 451.
  • a portion of the operation unit main body 450 connected to the housing 402 serves as a fulcrum, and the engaging portion 453 that has entered the housing through the window 432a rotates outward.
  • the engagement between the engaging portion 453 and the arm 413 provided on the needle hub 401 is released, and the moving mechanism 404 operates.
  • the operation unit body is formed integrally with the housing, and the action unit acting on the movement restricting unit is located on the tip side from the fixed unit fixed to the housing.
  • the number of parts can be reduced and manufacturing can be facilitated as compared to the case where the housing is connected to the housing via the assembly portion.
  • the pressing force applied to the operation button for operating the operation unit can be adjusted to an appropriate size, and a resistance unit or the like is provided between the operation unit and the housing. Even if it is not provided, it is possible to make it difficult for the moving mechanism to malfunction.
  • the needle hub 501 is protruded from the housing 502 as shown in FIG. 13, and the needle hub 501 and the housing 502 are separated as shown in FIG. Step portions 561 and 562 that engage with each other can be provided. By providing the stepped portions that engage with each other, the movement of the needle hub 501 toward the distal end side can be restricted.
  • the stepped portion 561 can be formed by making the outer diameter of the proximal end side of the needle hub 501 larger than the distal end side, and the stepped portion 562 can be formed by making the inner diameter of the distal end side of the housing 502 smaller than the proximal end side.
  • the tip direction restricting portion may be configured by providing protrusions or the like that engage with each other instead of the stepped portion, or by providing a protrusion or the like that contacts the inner surface of the housing flange on the needle hub. It is good also as a front-end
  • the height of the distal end side of the window portion 523a can be made lower than that of the proximal end side, so that the play in the window portion 523a of the arm 513 can be reduced.
  • the arm is engaged with the window portion as compared to the case where the axial length of the window portion is shortened to reduce the play in the arm window portion. It becomes easy.
  • the housing is brought into contact with any portion of the needle hub excluding the arm, and considering the restriction force, the stepped portion is preferably used as the tip direction restricting portion. In this case, the distal end side movement of the needle hub can be surely restricted, and the window 523a can be enlarged so that the product can be manufactured easily.
  • the puncture needle can be a metal tube such as stainless steel having a tip cut obliquely. Needles formed of a metal other than stainless steel or a resin can also be used. The length and thickness of the needle can be appropriately selected according to the purpose.
  • the needle hub can be made of resin.
  • it can be formed of polyethylene, polypropylene, polyester, polycarbonate, acrylic, or the like. By making it transparent or translucent, the flow of blood or the like can be confirmed.
  • the shaft portion and the arm can be formed integrally.
  • the puncture needle can be fixed to the needle hub by using an adhesive, welding or welding.
  • the tube connected to the proximal end side of the needle hub can be a flexible resin tube. A connector or the like can be connected to the proximal end of the tube.
  • the moving mechanism may have any configuration as long as the needle hub can be moved from the first position to the second position.
  • it can be a coil spring wound in a spiral.
  • the coil spring can be formed of a metal such as iron or stainless steel or a resin. The one where the diameter of a coil spring is smaller can make the diameter of a front part small.
  • the housing can be made of resin.
  • it can be formed of polyethylene, polypropylene, polyester, polycarbonate, acrylic, or the like. By making it transparent or translucent, the flow of blood or the like can be confirmed.
  • the outer diameter of the front portion is not particularly limited, but is preferably about 2 mm to 5 mm from the viewpoint of operability.
  • the rear portion has a flat shape whose height is smaller than the width.
  • the width can be about 8 mm to 18 mm, and the height can be about 3 mm to 6 mm. By keeping the height low, there is an advantage that the patient can be easily fixed to the body.
  • the diameter of the front part and the height of the rear part can be made to substantially coincide with each other.
  • the rear portion does not need to have a flat shape, and may be, for example, a cylindrical shape.
  • the front portion is not cylindrical but can be flat.
  • an operation part having operation buttons By arranging an operation part having operation buttons on both sides of the housing, the movement of the needle hub by the moving mechanism can be started when both operation buttons are operated. With such an arrangement, it is possible to make it less likely to cause a malfunction due to vibration during transportation or a finger or the like hitting the operation button, as compared with the case where there is only one operation button.
  • By providing an operation button on the housing side unlike the case where the arm provided on the needle hub is integrated with the operation button, even if two operation buttons are provided, the inner diameter of the portion through which the arm of the housing passes is sufficiently large. Can be kept small. Note that only one operation button may be provided. In this case, one arm can be provided corresponding to the operation button.
  • the wing portion can be made of a flexible resin.
  • it can be formed of polyethylene, polypropylene or vinyl chloride.
  • the surface of the wing portion may be provided with irregularities or the like in order to make it easy to grasp or to fix to the patient's body.
  • the wing portion has a cylindrical outer fitting portion that is fitted on the front portion, and can be attached by being fitted on the front portion.
  • the present invention is not limited to this, and any configuration may be used as long as it can be attached to the housing.
  • it can be set as the structure which has the wing
  • a gripping part such as a dent for gripping with a finger at the time of puncturing may be provided on both side surfaces of the housing so that the top surface of the housing can be easily pressed with a finger.
  • the needle hub is assembled to the housing so that the hole at the tip of the needle faces the top surface of the housing, and the operation portion is provided on the side surface of the housing.
  • an action part is located in the vicinity of a wing
  • the second end portion that is the action portion 353 of the operation portion 305 can be positioned on the distal end side with respect to the proximal end of the wing portion 103. That is, the most distal end portion of the operation portion 353 can be positioned on the distal end side with respect to the proximal end of the wing portion. Furthermore, a notch can be provided at the base end of the wing part 103 so that the action part 353 exists on the notch of the wing part 103 in a plan view as shown in FIG. In this way, it is possible to prevent an erroneous operation that would cause the action part 353 to be gripped. Note that the operation unit 305 can extend beyond the notch and onto the wing 103.
  • the operation button 351 is positioned between the wing portion 103 and the fixed portion so that the wing portion 103 does not touch the operation button 351 when the wing portion 103 is bent while the wing portion 103 is gripped.
  • the configuration shown in FIG. 10 has been described, the same modifications can be made in the configurations shown in FIGS.
  • the operation button extends from the side of the housing, and in this way, it is possible to prevent the hand from unintentionally coming into contact with the action part from the time of packaging to the time of use.
  • the wing portion may be a single wing, and in this case, the operation portion is preferably provided on the side where the single wing is provided.
  • an operation unit disabling unit that disables operation of the operation unit until it is removed may be provided.
  • the operation unit disabling unit is configured such that a hard member is removably provided between the operation button and the housing, or the hard member is removably attached so as to cover the operation unit. This can be realized by preventing the operation button from being pressed until it is removed.
  • the operation button is a part where the movement restriction of the needle hub by the movement restriction part can be released by pressing with the finger, and the unevenness may not be provided. Further, by providing the operation button on the side surface of the housing, it is possible to prevent malfunction during transportation in cooperation with the wing portion.
  • the movement restricting portion is an arm protruding from the needle hub, but other configurations may be adopted as long as the movement of the needle hub can be restricted to be releasable. Further, by providing a plurality of movement restricting portions, it is possible to make malfunctions less likely to occur.
  • the indwelling needle according to this modification has a thick operation button 113B on the end side provided on the needle hub 101.
  • the operation button 113B of the arm 113 is exposed so as to protrude to the outside of the housing 102 from the window portion 123a.
  • the operation button 113B is pressed from the outside of the housing 102, the end portion 113A moves to the shaft portion 112 side, and the engagement with the edge of the window portion 123a is released.
  • the above-described embodiment and A lock mechanism similar to the modification can be provided.
  • at least a part of the arm 113 protrudes from the rear end of the housing 102, thereby preventing the needle hub 101 from returning from the second position to the distal end side.
  • the portion of the arm 113 protruding from the rear end of the housing 102 expands larger than the inner dimension of the rear portion 122, and cannot return to the housing 102.
  • the configuration of the movement preventing means is simpler than that by using the shaft portion 112.
  • the length of the rear portion 122 of the housing 102 can be shortened, the operability at the time of puncturing can be further improved.
  • at least a part of the arm 113 may be configured to protrude from the rear end of the housing 102.
  • the two arms 113 extend toward the base end side. Since the arm 113 extends toward the base end side, a part of the arm 113 can be easily protruded from the rear end portion of the rear portion 122 so as to function as a lock mechanism in the second position. However, as shown in FIG. 20, the arm 113 may be configured to extend toward the distal end side.
  • the rear portion 122 may have a width of about 7.0 mm to 10 mm and a height of about 4.5 mm to 5.5 mm, for example. it can.
  • the front part 121 it can be made to be the same as that of embodiment and the modification which were shown previously.
  • the configuration of the wing portion for preventing erroneous operation similar to the embodiment and modified example described above, the configuration that prevents the needle hub from moving to the distal end side at the first position, and the like are adopted. can do.
  • the indwelling needle of the present disclosure can be less likely to malfunction and is useful as an indwelling needle or the like.

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

La présente invention concerne une aiguille à demeure fournie avec : une embase d'aiguille 301 ; une partie aile 103 s'étendant dans une direction croisant une direction d'axe d'aiguille ; un boîtier 302 logeant l'embase d'aiguille 301 ; un mécanisme de déplacement 304 qui amène l'embase d'aiguille 301 à être déplacée d'une première position vers une seconde position ; et une partie de fonctionnement 305 pour activer le mécanisme de mouvement 304. L'embase d'aiguille 301 comprend une partie de régulation de mouvement 313 afin de réguler de manière libérable le mouvement à partir de la première position. La partie de fonctionnement 305 comprend une partie fixe qui est d'un seul tenant avec le boîtier 302 et qui est fixée sur le boîtier 302, et une partie d'actionnement qui est positionnée plus près d'un côté d'extrémité de pointe que la partie fixe. En déplaçant la partie d'actionnement 353 à l'aide de la partie fixe comme point d'appui, la régulation par la partie de régulation de mouvement 313 est libérée pour activer le mécanisme de mouvement 304.
PCT/JP2016/003804 2015-08-24 2016-08-22 Aiguille à demeure WO2017033449A1 (fr)

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JP2015-164387 2015-08-24
JP2016043728 2016-03-07
JP2016-043728 2016-03-07

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO2022034904A1 (fr) 2020-08-14 2022-02-17 ニプロ株式会社 Ensemble aiguille à ailettes, matériau de conditionnement pour ensemble aiguille à ailettes, capuchon pour ensemble aiguille à ailettes, et jeu d'ensemble aiguille à ailettes
WO2022044061A1 (fr) * 2020-08-24 2022-03-03 東郷メディキット株式会社 Ensemble aiguille
WO2022263361A1 (fr) 2021-06-16 2022-12-22 Sarstedt Ag & Co. Kg Ensemble canule de sécurité

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
DE102021115556A1 (de) 2021-06-16 2022-12-22 Sarstedt Ag & Co. Kg Sicherheitskanülenanordnung

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WO2000047256A1 (fr) * 1999-02-15 2000-08-17 Syringe Development Partners L.L.C. Dispositif de positionnement de catheter intraveineux retractable
JP2001522658A (ja) * 1997-11-12 2001-11-20 エム ディー シー インベストメント ホールディングス インコーポレイテッド 格納可能な針を有する医療装置
JP2007521080A (ja) * 2003-06-27 2007-08-02 シャーウッド・サービシーズ・アクチェンゲゼルシャフト 安全ニードルシールド装置
JP2009509587A (ja) * 2005-09-22 2009-03-12 タイコ・ヘルスケアー・グループ・エルピー 安全針用の軸線上に配置されない戻しばね
JP2011200599A (ja) * 2010-03-26 2011-10-13 Terumo Corp 穿刺針組立体
JP2014532524A (ja) * 2011-11-07 2014-12-08 イーライ リリー アンド カンパニー 人間工学的改善を施した注射器具

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JP5007793B2 (ja) * 2006-09-21 2012-08-22 ニプロ株式会社 留置針
JP2013244268A (ja) * 2012-05-28 2013-12-09 Terumo Corp 医療用針

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US5779679A (en) * 1997-04-18 1998-07-14 Shaw; Thomas J. Winged IV set with retractable needle
JP2001522658A (ja) * 1997-11-12 2001-11-20 エム ディー シー インベストメント ホールディングス インコーポレイテッド 格納可能な針を有する医療装置
WO2000047256A1 (fr) * 1999-02-15 2000-08-17 Syringe Development Partners L.L.C. Dispositif de positionnement de catheter intraveineux retractable
JP2007521080A (ja) * 2003-06-27 2007-08-02 シャーウッド・サービシーズ・アクチェンゲゼルシャフト 安全ニードルシールド装置
JP2009509587A (ja) * 2005-09-22 2009-03-12 タイコ・ヘルスケアー・グループ・エルピー 安全針用の軸線上に配置されない戻しばね
JP2011200599A (ja) * 2010-03-26 2011-10-13 Terumo Corp 穿刺針組立体
JP2014532524A (ja) * 2011-11-07 2014-12-08 イーライ リリー アンド カンパニー 人間工学的改善を施した注射器具

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022034904A1 (fr) 2020-08-14 2022-02-17 ニプロ株式会社 Ensemble aiguille à ailettes, matériau de conditionnement pour ensemble aiguille à ailettes, capuchon pour ensemble aiguille à ailettes, et jeu d'ensemble aiguille à ailettes
WO2022044061A1 (fr) * 2020-08-24 2022-03-03 東郷メディキット株式会社 Ensemble aiguille
JPWO2022044061A1 (fr) * 2020-08-24 2022-03-03
JP7313749B2 (ja) 2020-08-24 2023-07-25 東郷メディキット株式会社 針組立体
WO2022263361A1 (fr) 2021-06-16 2022-12-22 Sarstedt Ag & Co. Kg Ensemble canule de sécurité

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JP6777083B2 (ja) 2020-10-28

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