WO2017170500A1 - Ensemble d'élément de préhension et de seringue - Google Patents

Ensemble d'élément de préhension et de seringue Download PDF

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Publication number
WO2017170500A1
WO2017170500A1 PCT/JP2017/012561 JP2017012561W WO2017170500A1 WO 2017170500 A1 WO2017170500 A1 WO 2017170500A1 JP 2017012561 W JP2017012561 W JP 2017012561W WO 2017170500 A1 WO2017170500 A1 WO 2017170500A1
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WO
WIPO (PCT)
Prior art keywords
barrel
grip
mounting
groove
flange
Prior art date
Application number
PCT/JP2017/012561
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English (en)
Japanese (ja)
Inventor
竹本昌史
Original Assignee
テルモ株式会社
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 テルモ株式会社 filed Critical テルモ株式会社
Publication of WO2017170500A1 publication Critical patent/WO2017170500A1/fr

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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

Definitions

  • the present invention relates to a grip attached to a proximal end portion of a barrel and a syringe assembly including the grip.
  • a syringe used for administration of a medical solution or the like to a patient, it protrudes outward at a proximal end portion of a barrel constituting a barrel portion of the syringe in order to facilitate grasping and operation of the syringe by a user.
  • a grip provided with a finger hook (see, for example, Japanese Patent No. 2845426).
  • a grip referred to as a backstop includes a peripheral wall having an opening that opens to the side, and a finger hook provided at the base end of the peripheral wall. It is configured so that it can be mounted on the barrel.
  • the present invention has been made in connection with the above-described conventional technology, and an object thereof is to provide a grip and a syringe assembly capable of reducing the manufacturing cost.
  • the present invention provides a grip attached to a syringe provided with a barrel having a flange projecting outwardly provided at a proximal end, and a finger hook projecting outwardly from the flange.
  • a base portion having a portion, a flange mounting groove that can be mounted on the flange, and a barrel mounting portion that can be mounted on the outer peripheral surface of the barrel, and the barrel mounting portion and the outer peripheral portion of the grip communicate with each other;
  • a mounting slit for longitudinally cutting the grip is formed, and the barrel mounting portion includes a first mounting portion that can be mounted on an outer peripheral surface of a first barrel having a first outer diameter, and the first mounting portion.
  • a second mounting portion that can be mounted on the outer peripheral surface of the second barrel having a second outer diameter that is larger than the outer diameter of the base portion, and on one side of the flange mounting groove in the thickness direction of the base portion.
  • the first mounting portion is provided; Wherein the second section on the other side of the flange mounting groove is provided.
  • the barrel mounting portion has the first mounting portion and the second mounting portion corresponding to different barrel outer diameters, so that the grip is also used between the barrels having different outer diameters. be able to. Thereby, the manufacturing cost of the grip can be reduced. Further, when the grip is formed by injection molding, the cost of the injection mold can be reduced.
  • the flange mounting groove can be mounted on either the first flange provided on the barrel having the first outer diameter or the second flange provided on the second barrel. It may consist of a single groove.
  • the flange mounting groove has a first groove portion and a second groove portion arranged in the thickness direction of the base portion, and the base portion has a thickness of the base portion that is the first groove portion and the second groove portion.
  • An intermediate wall portion that is partitioned in the vertical direction, and the intermediate wall portion is provided with a through-hole penetrating the intermediate wall portion in the thickness direction of the base portion, and the inner diameter of the through-hole is At the outer diameter of the first disc portion provided at the tip of the first pusher inserted into the first barrel, and at the tip of the second pusher inserted into the second barrel It is smaller than the outer diameter of the provided second disk part, and is larger than the outer diameter of the first shaft part of the first pusher and the outer diameter of the second shaft part of the second pusher. May be larger.
  • the first barrel and the second barrel can be fitted with grips, and the first and second pushers inserted into the first barrel and the second barrel, respectively, It is possible to prevent accidental removal from the first barrel and the second barrel, respectively.
  • the flange mounting groove has a first groove portion and a second groove portion arranged in the thickness direction of the base portion, and at least one of the first groove portion and the second groove portion is the first groove portion. It may be attachable to a third flange provided in a third barrel having a third outer diameter smaller than the outer diameter.
  • This configuration makes it possible to realize a grip that can accommodate three types of barrel outer diameters, thereby further reducing manufacturing costs.
  • the barrel mounting portion may further include a third mounting portion that can be mounted on an outer peripheral surface of the third barrel.
  • the base portion further includes an intermediate wall portion that partitions the first groove portion and the second groove portion in a thickness direction of the base portion, and the third mounting portion penetrates the intermediate wall portion.
  • the inner diameter of the third mounting portion is the outer diameter of the first disc portion provided at the tip of the first pusher inserted into the first barrel, and the second Smaller than the outer diameter of the second disc portion provided at the tip of the second pusher inserted into the barrel of the first pusher, the outer diameter of the first shaft portion of the first pusher, and It may be larger than the outer diameter of the second shaft portion of the second pusher.
  • the first barrel and the second barrel can be fitted with grips, and the first and second pushers inserted into the first barrel and the second barrel, respectively, It is possible to prevent accidental removal from the first barrel and the second barrel, respectively.
  • the first groove portion can be attached to a first flange provided in the first barrel, and the second groove portion is provided in a second flange provided in the second barrel.
  • the first mounting portion is provided adjacent to the opposite side of the second groove portion with respect to the first mounting portion, and the second mounting portion is first with respect to the second mounting portion.
  • the third mounting portion may be provided adjacent to the opposite side of the groove portion, and may be provided between the first groove portion and the second groove portion.
  • the grip when the grip is mounted on the barrel having the first outer diameter, the first mounting is performed on the outer peripheral surface of the barrel so that the barrel protrudes from the opposite side to the second groove with respect to the first groove.
  • the part can be attached.
  • the grip is attached to the barrel having the second outer diameter
  • the second attachment portion is attached to the outer peripheral surface of the barrel so that the barrel protrudes from the opposite side of the first groove portion with respect to the second groove portion. be able to.
  • the grip is attached to the barrel having the third outer diameter, the first groove portion or the second groove portion can be attached to the flange and the third attachment portion can be attached to the outer peripheral surface of the barrel.
  • the grip includes a first projecting portion projecting from the base portion to one side in the thickness direction of the base portion, and a second projecting portion projecting from the base portion to the other side in the thickness direction of the base portion.
  • the first mounting portion may be provided inside the first projecting portion, and the second mounting portion may be provided inside the second projecting portion.
  • the thickness of the finger-hanging portion can be suppressed while providing the first mounting portion and the second mounting portion.
  • the present invention is a syringe assembly comprising a syringe having a barrel provided with a flange projecting outwardly at a proximal end portion, and a grip attached to the outer peripheral portion of the proximal end of the barrel,
  • the grip is any one of the above grips.
  • the syringe is formed by a gasket slidably inserted into the barrel, a pusher connected to or connectable to the gasket, and the barrel and the gasket. And a liquid medicine filled in the liquid chamber.
  • the manufacturing cost can be reduced.
  • FIG. 3A is a front view of the grip according to the first embodiment
  • FIG. 3B is a view of the grip according to the first embodiment as viewed from the first protruding portion side.
  • FIG. 4A is a perspective view illustrating a state in which the grip according to the first embodiment is attached to a barrel having a first outer diameter
  • FIG. 4B relates to the barrel having a second outer diameter according to the first embodiment.
  • FIG. 4A is a perspective view which shows the state which mounted
  • FIG. 4A is a perspective view of the syringe assembly which concerns on 2nd Embodiment.
  • FIG. 6A is a perspective view of a grip according to the second embodiment
  • FIG. 6B is a front view of the grip according to the second embodiment
  • FIG. 7A is a view of the grip according to the second embodiment as viewed from the first protruding portion side
  • FIG. 7B is a view of the grip according to the second embodiment as viewed from the second protruding portion side
  • FIG. 8A is a perspective view showing a state in which the grip according to the second embodiment is attached to a barrel having a first outer diameter
  • FIG. 8B relates to the barrel having a second outer diameter according to the second embodiment. It is a perspective view which shows the state which mounted
  • a syringe assembly 10 ⁇ / b> A includes a syringe 12 and a grip 14 ⁇ / b> A attached to the syringe 12.
  • the syringe 12 is configured as a prefilled syringe that is pre-filled with the chemical M in a product provision state.
  • the syringe 12 includes a hollow barrel 16 constituting the body of the syringe 12, a drug solution M filled in the barrel 16, a gasket 18 inserted into the barrel 16, and a needle provided at the tip of the barrel 16.
  • a holding unit 20 and a puncture needle 22 held by the needle holding unit 20 are provided.
  • the barrel 16 is a hollow body having a substantially cylindrical shape and having a proximal end opening 17 at the proximal end.
  • a flange 24 is formed on the outer peripheral portion of the base end of the barrel 16 so as to protrude radially outward.
  • a gasket 18 is inserted into the barrel 16 through a proximal end opening 17. The proximal end side of the barrel 16 is liquid-tightly sealed by the gasket 18, and the chemical solution M is sealed in the barrel 16.
  • the gasket 18 is made of an elastic material such as a rubber material.
  • the gasket 18 is arranged so that its outer peripheral portion is in liquid-tight contact with the inner peripheral surface of the barrel 16 and is slidable within the barrel 16.
  • a tip of a pusher 26 is connected to the gasket 18. When the user presses the pusher 26 in the distal direction, the gasket 18 slides in the barrel 16 in the distal direction.
  • the pusher 26 may be connected to the gasket 18 when the patient punctures the puncture needle 22 and administers the medicinal solution M to the patient.
  • the needle holding portion 20 is formed integrally with the distal end portion of the barrel 16, is reduced in diameter with respect to the barrel 16 from the central portion of the distal end of the barrel 16 and extends in the distal end direction, and the proximal end side of the puncture needle 22 is formed. Hold.
  • the puncture needle 22 is a hollow body in which a lumen as a fluid passage is formed, and a sharp needle tip is formed at the tip thereof.
  • the puncture needle 22 protrudes from the needle holding part 20 in the distal direction.
  • the lumen of the puncture needle 22 communicates with the hollow portion (liquid chamber) of the barrel 16 through the proximal end opening of the puncture needle 22.
  • the drug solution M accommodated in the hollow interior of the barrel 16 is discharged from the tip of the lumen of the puncture needle 22 and administered to the patient.
  • a cap (not shown) made of a flexible resin material such as a rubber material covers the puncture needle 22 so as to seal the distal end opening of the puncture needle 22.
  • the cap is removed by a user such as a doctor or a nurse pulling the tip and pulling it out in the tip direction.
  • the syringe assembly 10A may include a protective device for preventing inadvertent punctures other than during administration of the drug solution M to the patient.
  • a protective device is configured to cover the puncture needle 22 before and after puncturing the patient with the puncture needle 22.
  • the grip 14 ⁇ / b> A is attached to the outer peripheral portion of the proximal end of the barrel 16 in the product provision state of the syringe assembly 10 ⁇ / b> A.
  • the grip 14 ⁇ / b> A may be separated from the syringe 12 and may be attached to the outer peripheral portion of the proximal end of the barrel 16 when used by the user.
  • the central axis a (see FIG. 2) is simply referred to as “axis a”, and the extending direction of the axis a is referred to as “axial direction”.
  • the grip 14A is configured to be attachable to any of two types of barrels 16 having different outer diameters.
  • the grip 14 ⁇ / b> A includes a base portion 32 having a pair of finger hanging portions 30, a first protrusion 34 protruding in the axial direction from the base portion 32, and a second protrusion protruding in the other axial direction from the base portion 32.
  • a portion 36, a barrel mounting portion 38 that can be mounted on the outer peripheral surface of the barrel 16, and a flange mounting groove 40 that can be mounted on the flange 24 are provided.
  • a mounting slit 42 that vertically cuts the base 32, the first protrusion 34, and the second protrusion 36 in the axial direction is formed over the entire length of the grip 14A.
  • the base portion 32 is a portion constituting the central portion of the grip 14A in the axial direction, and is formed in a plate shape orthogonal to the axis a of the grip 14A. Accordingly, the base portion 32 has a thickness in the axial direction of the grip 14A.
  • the pair of finger hanging portions 30 in the base portion 32 protrude in directions opposite to each other perpendicular to the axis a.
  • the shape of the base part 32 seen from the axial direction is relatively long in the protruding direction of the finger hanging part 30, and is formed relatively short in the direction orthogonal to the protruding direction (FIG. 3B). reference).
  • the grip 14 ⁇ / b> A is mounted on the barrel 16
  • the pair of finger hooks 30 protrude outward from the flange 24 (see FIG. 1).
  • the first protrusion 34 protruding in the axial direction from the base 32 is formed to extend in an arc shape in the circumferential direction around the axis a. That is, the 1st protrusion part 34 is formed in the shape (C-shaped cross section) by which a part of circular ring shape was notched.
  • a portion cut out in the first protrusion 34 (hereinafter referred to as “first cutout 44”) constitutes a part of the mounting slit 42, and is formed on the side surface on one side in the short direction of the base portion 32. It is open.
  • the 2nd protrusion part 36 which protruded from the base part 32 to the other axial direction is formed so that it may extend in circular arc shape in the circumferential direction centering on the axis line a. That is, the 2nd protrusion part 36 is formed in the shape (C-shaped cross section) by which a part of circular ring shape was notched.
  • a portion cut out in the second projecting portion 36 (hereinafter referred to as “second cutout portion 46”) constitutes the other portion of the mounting slit 42, and is formed on the side surface of the base portion 32 on one side in the short direction. It is open.
  • the barrel mounting portion 38 includes a first mounting portion 48 that can be mounted on the outer peripheral surface of the first barrel 16a (see FIG. 4A) having a first outer diameter d1, and a second larger than the first outer diameter d1. And a second mounting portion 50 that can be mounted on the outer peripheral surface of the second barrel 16b (see FIG. 4B) having an outer diameter d2. Accordingly, the diameter D2 of the second mounting portion 50 (the inner diameter of the second protrusion 36) is smaller than the diameter D1 of the first mounting portion 48 (the inner diameter of the first protrusion 34).
  • the first outer diameter d1 may be referred to as “the outer diameter d1 of the first barrel 16a”.
  • the second outer diameter d2 may be referred to as “the outer diameter d2 of the second barrel 16b”.
  • the inner peripheral surface of the first projecting portion 34 constitutes the first mounting portion 48
  • the inner peripheral surface of the second projecting portion 36 constitutes the second mounting portion 50.
  • a first mounting portion 48 is provided on one side of the flange mounting groove 40
  • a second mounting portion 50 is provided on the other side of the flange mounting groove 40.
  • the center of curvature of the first mounting portion 48 and the center of curvature of the second mounting portion 50 are on the same straight line.
  • the first mounting portion 48 is configured to be mountable on the outer peripheral surface of the barrel 16 for 1.0 mL
  • the second mounting portion 50 is mountable on the outer peripheral surface of the barrel 16 for 2.25 mL.
  • the first mounting portion 48 is configured to be mountable on the outer peripheral surface of the 0.5 mL barrel 16
  • the second mounting portion 50 is configured on the outer peripheral surface of the 1.0 mL barrel 16. It can be configured to be wearable.
  • the first mounting portion 48 is configured to be mountable on the outer peripheral surface of the barrel 16 for 0.5 mL
  • the second mounting portion 50 is configured on the outer peripheral surface of the barrel 16 for 2.25 mL. It can be configured to be wearable.
  • the outer diameter of the barrel 16 for 0.5 mL is, for example, 6.7 to 8.3 mm.
  • the outer diameter of the 1.0 mL barrel 16 is, for example, 8.0 to 9.5 mm.
  • the outer diameter of the 2.25 mL barrel 16 is, for example, 10.7 to 11.5 mm.
  • the diameter D1 of the first mounting portion 48 is constant in the axial direction, and is set to be equal to or close to the first outer diameter d1.
  • the ratio of the diameter of the first mounting portion 48 to the first outer diameter d1 (D1 / d1) is, for example, 90 to 120%, preferably 95 to 110%. If the said ratio regarding the 1st outer diameter d1 is 120% or less, the 1st mounting part 48 will be mounted
  • the width W1 of the first mounting portion 48 in the natural state where the first opening 49 (the boundary between the first mounting portion 48 and the first notch portion 44) connected to the first notch portion 44 is not elastically deformed. 3B) is smaller than the diameter D1 of the first mounting portion 48 and the outer diameter d1 of the first barrel 16a. Accordingly, when the grip 14A is attached to the first barrel 16a, the first protrusion 34 is elastically deformed by the first barrel 16a, and the first opening 49 is pushed and expanded. When the first barrel 16a is accommodated in the first mounting portion 48, the first opening 49 returns to the original width W1 by the elastic restoring force of the first protrusion 34.
  • the ratio of the width W1 to the first outer diameter d1 is, for example, 70 to 99%, preferably 80 to 95%. If the said ratio regarding the width
  • the diameter D2 of the second mounting portion 50 is constant in the axial direction, and is set to be the same as the second outer diameter d2 or close to the first outer diameter d1.
  • the ratio of the second outer diameter d2 to the diameter of the second mounting portion 50 is, for example, 90 to 120%, preferably 95 to 110%. If the ratio regarding the second outer diameter d2 is 120% or less, the second mounting portion 50 is mounted on the second barrel 16b having the second outer diameter d2, and the second barrel 16b is mounted on the flange. It is possible to prevent the second flange 24b on the side opposite to the eccentric direction from coming off in a state where the groove 40 is eccentric most on one side. Moreover, if the said ratio regarding the 2nd outer diameter d2 is 90% or more, the 2nd mounting part 50 can be mounted
  • the width W2 in the natural state in which the second opening 51 (the boundary between the second mounting part 50 and the second notch part 46) connected to the second notch part 46 in the second mounting part 50 is not elastically deformed is The diameter D2 of the second mounting part 50 and the outer diameter d2 of the second barrel 16b are smaller.
  • the grip 14A is mounted on the second barrel 16b
  • the second protrusion 16 is elastically deformed by the second barrel 16b, and the second opening 51 is expanded.
  • the second opening 51 returns to the original width W2 by the elastic restoring force of the first protrusion 34.
  • the ratio of the width W2 to the second outer diameter d2 is, for example, 70 to 99%, preferably 80 to 95%. If the said ratio regarding the width W2 is 99% or less, the 2nd barrel 16b fitted to the 2nd mounting part 50 can be prevented from coming off easily. Moreover, if the said ratio regarding the width
  • the flange mounting groove 40 has a first flange 24a provided in the first barrel 16a having the first outer diameter d1 and a second flange 16b provided in the second barrel 16b having the second outer diameter d2. It consists of a single groove that can be mounted on any of the flanges 24b.
  • the flange mounting groove 40 is formed in a substantially U shape in the middle portion of the base portion 32 in the thickness direction, and is open to one side of the base portion 32 in the short direction.
  • the flange mounting groove 40 communicates with the first mounting portion 48, the second mounting portion 50, and the mounting slit 42.
  • the flange mounting groove 40 has a holding groove portion 52 having holding surfaces 52a opposed in parallel to each other, and forms a region outside the holding groove portion 52 in the flange mounting groove 40 and has a taper width toward the outside in the protruding direction of the finger hook portion 30. And an outer groove portion 54 that decreases.
  • the holding groove 52 constitutes an inner region in the flange mounting groove 40.
  • the flange 24 is inserted into the holding groove 52, and is held between the holding surfaces 52 a facing each other. Thereby, the relative movement of the grip 14A in the axial direction with respect to the barrel 16 is restricted.
  • the mounting slit 42 communicates the inside of the first protrusion 34 and the inside of the second protrusion 36 with the outside of the grip 14A, and connects the base 32, the first protrusion 34, and the second protrusion 36 in the axial direction. It is a gap that runs vertically.
  • the first notch 44 and the second notch 46 described above constitute a mounting slit 42.
  • the opening width of the mounting slit 42 increases toward one side in the short direction of the base portion 32.
  • the constituent material of the grip 14A is not particularly limited, and examples thereof include resin materials such as polypropylene, polycarbonate, polyamide, polysulfone, polyarylate, ABS, and high-density polyethylene.
  • the grip 14A is formed by, for example, injection molding.
  • the grip 14A may be formed by a 3D printer.
  • the grip 14A when the grip 14A is attached to the first barrel 16a having the first outer diameter d1, the flange attachment groove 40 and the first attachment portion 48 of the barrel attachment portion 38 are provided via the attachment slit 42. Are mounted on the outer peripheral surfaces of the first flange 24a and the first barrel 16a, respectively. That is, the grip 14A is placed on the first barrel so that the first mounting portion 48 is disposed on the distal end surface side of the first flange 24a and the second mounting portion 50 is disposed on the proximal end surface side of the first flange 24a. Attach to the proximal end of 16a.
  • the first flange 24a is held in the flange mounting groove 40 (holding groove portion 52), and the first barrel 16a is held in the first mounting portion 48.
  • the width W1 (FIG. 3B) of the first opening 49 of the first mounting portion 48 is smaller than the outer diameter d1 of the first barrel 16a, the first barrel 16a can be easily removed from the first mounting portion 48. It will not come off.
  • the grip 14 ⁇ / b> A is mounted on the first barrel 16 a, the first pusher 26 a inserted into the first barrel 16 a protrudes from the inside of the second mounting portion 50 in the proximal direction.
  • the grip 14A when the grip 14A is mounted on the second barrel 16b having the second outer diameter d2, the flange mounting groove 40 and the second mounting of the barrel mounting portion 38 are mounted via the mounting slit 42.
  • the parts 50 are attached to the outer peripheral surfaces of the second flange 24b and the second barrel 16b, respectively. That is, contrary to the case where the grip 14A is mounted on the first barrel 16a having the first outer diameter d1, the second mounting portion 50 is disposed on the distal end surface side of the second flange 24b, and the first mounting portion.
  • the grip 14A is attached to the proximal end portion of the second barrel 16b so that 48 is disposed on the proximal end face side of the second flange 24b.
  • the second flange 24b is held in the flange mounting groove 40 (holding groove portion 52) and the second barrel 16b is held in the second mounting portion 50.
  • the width W2 (FIG. 3B) of the second opening 51 of the second mounting portion 50 is smaller than the outer diameter d2 of the second barrel 16b, the second barrel 16b can be easily removed from the second mounting portion 50. It will not come off.
  • the grip 14A is mounted on the second barrel 16b, the second pusher 26b inserted into the second barrel 16b protrudes from the inside of the first mounting portion 48 in the proximal direction.
  • the barrel mounting part 38 has the first mounting part 48 and the second mounting part 50 corresponding to two types of barrel outer diameters. For this reason, the grip 14A can be shared between the first barrel 16a and the second barrel 16b having different outer diameters. Therefore, the manufacturing cost of the grip 14A can be reduced. Further, when the grip 14A is formed by injection molding, the cost of the injection molding die can be reduced.
  • the flange mounting groove 40 is provided in the first flange 24a provided in the first barrel 16a having the first outer diameter d1 and the barrel 16 having the second outer diameter d2. It consists of a single groove that can be mounted on any of the second flanges 24b.
  • the grip 14A which can respond to two types of barrel outer diameters can be realized with a simple configuration.
  • the first mounting portion 48 is provided inside the first protrusion 34 that protrudes from the base portion 32 to one side in the thickness direction of the base portion 32, and the thickness of the base portion 32 from the base portion 32 is increased.
  • a second mounting portion 50 is provided on the inner side of the second projecting portion 36 projecting to the other side in the direction.
  • a syringe assembly 10 ⁇ / b> B according to the second embodiment of the present invention shown in FIG. 5 includes a syringe 12 and a grip 14 ⁇ / b> B attached to the syringe 12.
  • the same or similar elements as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the syringe 12 of the syringe assembly 10B is configured similarly to the syringe 12 of the syringe assembly 10A according to the first embodiment described above.
  • the grip 14B is attached to the outer peripheral portion of the proximal end of the barrel 16 in the product provision state of the syringe assembly 10B.
  • the grip 14B is separated from the syringe 12, and may be attached to the outer peripheral portion of the proximal end of the barrel 16 when used by the user.
  • the central axis b (see FIGS. 6A and 6B) is simply referred to as “axis b”, and the extending direction of the axis b is referred to as “axial direction”.
  • the grip 14B is configured to be attachable to any of three types of barrels (first barrel 16a, second barrel 16b, and third barrel 16c) having different outer diameters (see FIGS. 8A to 9).
  • the grip 14B includes a base portion 32 having a pair of finger hanging portions 30, a first protrusion 34 protruding from the base portion 32 in one axial direction, a second protrusion 36 protruding from the base portion 32 in the other axial direction, A barrel mounting portion 60 that can be mounted on the outer peripheral surface of the barrel 16 and a flange mounting groove 62 that can be mounted on the flange 24 are provided.
  • a mounting slit 64 that vertically cuts the base 32, the first protrusion 34, and the second protrusion 36 in the axial direction is formed over the entire length of the grip 14B.
  • the barrel mounting portion 60 is similar to the barrel mounting portion 38 in the first embodiment, and is an outer peripheral surface of the first barrel 16a (see FIG. 8A) having the first outer diameter d1.
  • the first mounting portion 48 is provided on one side of the flange mounting groove 62
  • the second mounting portion 50 is provided on the other side of the flange mounting groove 62.
  • the barrel mounting portion 60 further includes a third mounting portion 66 that can be mounted on the outer peripheral surface of the third barrel 16c (see FIG. 9) having a third outer diameter d3 smaller than the first outer diameter d1.
  • the third outer diameter d3 may be referred to as “the outer diameter d3 of the third barrel 16c”.
  • the third mounting part 66 is provided between the first mounting part 48 and the second mounting part 50. Further, the third mounting portion 66 is provided between the first groove portion 68 and the second groove portion 70 adjacent to a later-described first groove portion 68 and second groove portion 70 of the barrel mounting portion 60.
  • the third mounting portion 66 penetrates an intermediate wall portion 72 to be described later in the axial direction and extends in an arc shape in the circumferential direction around the axis line b. That is, the third mounting portion 66 is formed in a shape (C-shaped cross section) in which a part of a circular ring shape is cut out.
  • the center of curvature of the first mounting portion 48, the center of curvature of the second mounting portion 50, and the center of curvature of the third mounting portion 66 exist on the same straight line.
  • the first mounting portion 48 is configured to be mountable on the outer peripheral surface of the 1.0 mL barrel 16, and the second mounting portion 50 is mountable on the outer peripheral surface of the 2.25mL barrel 16.
  • the third mounting portion 66 is configured to be mountable on the outer peripheral surface of the 0.5 mL barrel 16.
  • the diameter D3 of the third mounting portion 66 is smaller than the diameter D1 of the first mounting portion 48. Further, as shown in FIG. 7B, the diameter D3 of the third mounting portion 66 is smaller than the diameter D2 of the second mounting portion 50.
  • the diameter D3 of the third mounting portion 66 is constant in the axial direction, and is set to be the same as the third outer diameter d3 or a size close to the third outer diameter d3.
  • the ratio (D3 / d3) of the diameter D3 of the third mounting portion 66 to the third outer diameter d3 is the same as the ratio (D1 / d1) of the diameter D1 of the first mounting portion 48 to the first outer diameter d1 described above. It can be set within the range.
  • a width W3 of a third opening 67 of the third mounting portion 66 is smaller than the outer diameter d3 of the third barrel 16c.
  • the flange mounting groove 62 includes a first groove portion 68 and a second groove portion 70 arranged in the thickness direction of the base portion 32.
  • the first groove portion 68 and the second groove portion 70 are partitioned in the axial direction by an intermediate wall portion 72 provided in the base portion 32.
  • the intermediate wall portion 72 is formed with a third notch portion 74 that penetrates the intermediate wall portion 72 in the axial direction (thickness direction) and communicates the third mounting portion 66 and the outside of the grip 14B.
  • the first groove portion 68 can be attached to the first flange 24a provided in the first barrel 16a having the first outer diameter d1.
  • the second groove portion 70 can be attached to the second flange 24b provided in the second barrel 16b having the second outer diameter d2.
  • the first groove portion 68 and the second groove portion 70 are open to one side in the short direction of the base portion 32.
  • the second groove part 70 is larger than the first groove part 68.
  • the groove width of the first groove portion 68 (separation distance between first holding surfaces 68a described later) and the groove width of the second groove portion 70 (separation distance between second holding surfaces 70a described later) are the same.
  • both the first groove portion 68 and the second groove portion 70 can be attached to the third flange 24c provided in the third barrel 16c having the third outer diameter d3.
  • the first groove 68 has first holding surfaces 68a facing each other in parallel, and communicates with the first mounting portion 48 and the third mounting portion 66.
  • FIG. 8A in a state where the first groove portion 68 is mounted on the first flange 24a, the first flange 24a is held by the first flange 24a being sandwiched by the first holding surfaces 68a facing each other. Is done. Since the first flange 24a is held by the first groove portion 68, the relative movement in the axial direction of the grip 14B with respect to the first barrel 16a is restricted.
  • the second groove portion 70 has a second holding surface 70a facing each other in parallel, and communicates with the second mounting portion 50 and the third mounting portion 66.
  • the second flange 24b is held by the second flange 24b being sandwiched by the second holding surfaces 70a facing each other. Is done. Since the second flange 24b is held by the second groove portion 70, the relative movement in the axial direction of the grip 14B with respect to the second barrel 16b is restricted.
  • the mounting slit 64 is a gap that communicates the first mounting portion 48, the second mounting portion 50, the third mounting portion 66, and the outside of the grip 14B.
  • the mounting slit 64 is a gap that vertically cuts the first protrusion 34, the second protrusion 36, and the intermediate wall 72 in the axial direction.
  • the first notch 44, the second notch 46, and the third notch 74 constitute a mounting slit 64.
  • the grip 14B can be made of the same material as the grip 14A in the first embodiment.
  • the grip 14B can be formed by the same method as the grip 14A in the first embodiment.
  • the grip 14B when the grip 14B is attached to the first barrel 16a having the first outer diameter d1, the first groove portion 68 of the flange attachment groove 62 and the barrel attachment portion 60 are connected via the attachment slit 64.
  • the first mounting portion 48 is mounted on the outer peripheral surfaces of the first flange 24a and the first barrel 16a, respectively. That is, the grip 14B is placed on the first barrel so that the first mounting portion 48 is disposed on the distal end surface side of the first flange 24a and the third mounting portion 66 is disposed on the proximal end surface side of the first flange 24a. Attach to the proximal end of 16a.
  • the first flange 24a is held in the first groove portion 68, and the first barrel 16a is held in the first mounting portion 48.
  • the pusher 26 protruding in the proximal direction from the proximal end opening 17 (see FIG. 5) of the first barrel 16a is connected to the second mounting portion 50 and the second mounting portion 50. 3 is inserted inside the mounting portion 66.
  • the inner diameter D3 (see FIG. 7A, etc.) of the third mounting portion 66 is outside the first disc portion 29a provided at the tip of the first pusher 26a inserted into the first barrel 16a.
  • the grip 14B when the grip 14B is mounted on the second barrel 16b having the second outer diameter d2, the second groove portion 70 of the flange mounting groove 62 and the barrel mounting portion 60 are connected via the mounting slit 64.
  • the second mounting portion 50 is mounted on the outer peripheral surface of the flange 24 and the second barrel 16b.
  • the grip 14B is attached to the second barrel 16b in the opposite axial direction to the case where the grip 14B is attached to the first barrel 16a having the first outer diameter d1.
  • the grip 14B is disposed at the proximal end portion of the second barrel 16b so that the second mounting portion 50 is disposed on the distal end surface side of the flange 24 and the third mounting portion 66 is disposed on the proximal end surface side of the flange 24. Installing.
  • the second flange 24b is held in the second groove portion 70 and the second barrel 16b is held in the second mounting portion 50.
  • the pusher 26 protruding in the proximal direction from the proximal end opening 17 (see FIG. 5) of the second barrel 16b is formed by the first mounting portion 48 and the first mounting portion 48. 3 is inserted inside the mounting portion 66.
  • the inner diameter D3 of the third mounting portion 66 is smaller than the outer diameter of the second disc portion 29b provided at the tip of the second pusher 26b inserted into the second barrel 16b, It is larger than the outer diameter of the second shaft portion 27b of the second pusher 26b. For this reason, when the 2nd disc part 29b contact
  • the grip 14B when the grip 14B is attached to the third barrel 16c having the third outer diameter, for example, the second groove portion 70 of the flange attachment groove 62 and the barrel attachment portion 60 are provided via the attachment slit 64.
  • the grip 14B is attached to the base of the third barrel 16c so that the third mounting portion 66 is disposed on the distal end surface side of the flange 24 and the second mounting portion 50 is disposed on the proximal end surface side of the third flange 24c. Attach to the end.
  • the third flange 24 c is held in the second groove portion 70
  • the third barrel 16 c is held in the third mounting portion 66.
  • the third barrel 16c is easily removed from the third mounting portion 66.
  • the grip 14B is mounted on the third barrel 16c
  • the third pusher 26c inserted into the third barrel 16c is connected to the proximal end opening 17 of the third barrel 16c (see FIG. 5). Projecting in the proximal direction and inserted into the second mounting portion 50. Further, in a state where the grip 14 ⁇ / b> B is attached to the third barrel 16 c, the third barrel 16 c is inserted inside the first attachment portion 48. Since the diameter D1 of the first mounting portion 48 is larger than the outer diameter d3 of the third barrel 16c, the first mounting portion 48 does not interfere with the outer peripheral surface of the third barrel 16c.
  • the grip 14B can be attached to the third barrel 16c in the direction opposite to that shown in FIG. 9 in the axial direction.
  • the first groove portion 68 is attached to the flange 24 and the third attachment portion 66 is attached to the outer peripheral surface of the barrel 16. That is, the grip 14B is placed on the proximal end portion of the third barrel 16c so that the third attachment portion 66 is disposed on the distal end surface side of the flange 24 and the first attachment portion 48 is disposed on the proximal end surface side of the flange 24. Installing. As a result, the third barrel 16c is inserted into the second mounting portion 50.
  • the barrel mounting portion 60 includes the first mounting portion 48, the second mounting portion 50, and the third mounting portion 66 corresponding to three different types of barrel outer diameters.
  • the first groove portion 68 and the second groove portion 70 can be attached to the third flange 24c provided in the third barrel 16c having a third outer diameter d3 smaller than the first outer diameter d1.
  • the grip 14B can be shared between the first barrel 16a, the second barrel 16b, and the third barrel 16c having different outer diameters. Therefore, the manufacturing cost of the grip 14B can be further reduced.
  • the first mounting portion 48 is provided adjacent to the opposite side of the second groove portion 70 with respect to the first mounting portion 48, and the second mounting portion 50 is based on the second mounting portion 50.
  • the third mounting portion 66 is provided between the first groove portion 68 and the second groove portion 70, and is provided adjacent to the opposite side of the first groove portion 68.
  • the second barrel 16b protrudes from the opposite side of the first groove 68 with respect to the second groove 70.
  • the second mounting portion 50 can be mounted on the outer peripheral surface of the second barrel 16b.
  • the grip 14B is attached to the third barrel 16c having the third outer diameter d3
  • the first groove 68 or the second groove 70 is attached to the third flange 24c and the outer peripheral surface of the third barrel 16c.
  • the third mounting portion 66 can be mounted on
  • the third mounting portion 66 may be omitted.
  • the first shaft portion 27a and the second shaft portion 27b can be inserted into the intermediate wall portion 72 instead of the third mounting portion 66.
  • the first disc portion 29a and the second disc portion can be inserted.
  • a through-hole having a size that the portion 29b cannot pass is provided. That is, the inner diameter of the through hole is smaller than the outer diameter of the first disc portion 29a and the outer diameter of the second disc portion 29b, and the outer diameter of the first shaft portion 27a and the second shaft portion 27b. Is smaller than the outer diameter.
  • the grip 14B can be attached to the first barrel 16a and the second barrel 16b, and the first pusher 26a and the second pusher 26a inserted into the first barrel 16a and the second barrel 16b, respectively. It is possible to prevent the pushers 26b from being accidentally removed from the first barrel 16a and the second barrel 16b, respectively. Even in such a case, the grip 14B is attached to the third barrel 16c by allowing the third flange 24c provided in the third barrel 16c to be inserted into the first groove 68 or the second groove 70. can do.
  • the syringe 12 is not limited to a prefilled syringe, and may be a syringe filled with the drug solution M after the product is provided.

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)

Abstract

La présente invention concerne un élément de préhension (14A) comprenant une partie de base (32), une rainure de montage de bride (40) et une partie de montage de cylindre (38). La partie de montage de cylindre (38) comporte une première partie de montage (48) qui peut être montée sur la surface périphérique externe d'un premier cylindre (16a) ayant un premier diamètre externe (d1), et une seconde partie de montage (50) qui peut être montée sur la surface périphérique externe d'un second cylindre (16b) ayant un second diamètre externe (d2) qui est plus grand que le premier diamètre externe (d1). La première partie de montage (48) est disposée sur un côté de la rainure de montage de bride (40), et la seconde partie de montage (50) est disposée sur l'autre côté de la rainure de montage de bride (40) dans la direction de l'épaisseur de la partie de base (32).
PCT/JP2017/012561 2016-03-30 2017-03-28 Ensemble d'élément de préhension et de seringue WO2017170500A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016067860 2016-03-30
JP2016-067860 2016-03-30

Publications (1)

Publication Number Publication Date
WO2017170500A1 true WO2017170500A1 (fr) 2017-10-05

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Application Number Title Priority Date Filing Date
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WO (1) WO2017170500A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613035A1 (de) * 1996-03-19 1997-09-25 Ferring Arzneimittel Gmbh Griffstück für eine Spritze
US20120279996A1 (en) * 2011-05-06 2012-11-08 Nordson Corporation Adapter for syringes and associated dispensing devices and methods
WO2015146501A1 (fr) * 2014-03-26 2015-10-01 テルモ株式会社 Monture de seringue

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613035A1 (de) * 1996-03-19 1997-09-25 Ferring Arzneimittel Gmbh Griffstück für eine Spritze
US20120279996A1 (en) * 2011-05-06 2012-11-08 Nordson Corporation Adapter for syringes and associated dispensing devices and methods
WO2015146501A1 (fr) * 2014-03-26 2015-10-01 テルモ株式会社 Monture de seringue

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