WO2022172708A1 - Seringue et cylindre de seringue - Google Patents

Seringue et cylindre de seringue Download PDF

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Publication number
WO2022172708A1
WO2022172708A1 PCT/JP2022/001744 JP2022001744W WO2022172708A1 WO 2022172708 A1 WO2022172708 A1 WO 2022172708A1 JP 2022001744 W JP2022001744 W JP 2022001744W WO 2022172708 A1 WO2022172708 A1 WO 2022172708A1
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WO
WIPO (PCT)
Prior art keywords
needle tube
diameter
small
syringe
diameter portion
Prior art date
Application number
PCT/JP2022/001744
Other languages
English (en)
Japanese (ja)
Inventor
勇輝 間中
Original Assignee
株式会社トップ
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 株式会社トップ filed Critical 株式会社トップ
Priority to JP2022581280A priority Critical patent/JPWO2022172708A1/ja
Publication of WO2022172708A1 publication Critical patent/WO2022172708A1/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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub

Definitions

  • the present invention relates to a syringe and a syringe outer cylinder used for administering a drug solution to a human body or the like.
  • some relatively small-capacity syringes used for administering vaccines have a needle tube directly fixed to the outer cylinder (barrel).
  • Such needle-equipped syringes have the advantage of having less dead space than syringes to which the needle tube is connected via a luer connector.
  • the needle-equipped syringe has the advantage that the amount of liquid medicine remaining in the syringe is small when the pusher (plunger) inserted in the outer cylinder is completely pushed out. can be used for
  • the needle tube is fixed to the outer cylinder by inserting the rear end of the needle tube into the needle tube insertion part which is a part of the hole provided at the tip of the outer cylinder and pouring an adhesive between the two. It is done by gluing. Further, positioning of the needle tube in the axial direction is performed by providing a step at the rear end of the needle tube insertion portion (see, for example, Patent Document 1).
  • the rear end portion of the needle tube insertion portion is a region extending in a plurality of axial and radial directions of the outer cylinder. Since it is located in a region with poor properties, that is, in a region where sink marks and voids are likely to occur during resin molding, there is a problem that molding defects tend to occur.
  • the conventional needle-equipped syringe not only has poor assembling properties, but also has low productivity due to a decrease in yield.
  • the syringe of the present invention includes a needle tube and an outer tube to which the needle tube is fixed, the outer tube including a bottomed cylindrical outer tube main body portion including a bottom portion and a cylindrical portion; is fixed, a needle tube insertion portion provided in the protrusion and into which the needle tube is inserted, and a flow passage that communicates the inner space of the outer cylinder main body and the needle tube insertion portion,
  • the flow path is provided at a position connected to the needle tube insertion portion, and is provided so as to connect a small diameter portion having a smaller diameter or a narrower width than the outer diameter of the needle tube, and an inner space of the outer cylinder main body portion and the small diameter portion.
  • a large-diameter portion having a larger diameter or width than the small-diameter portion, and the small-diameter portion is provided closer to the tip side than the tip side surface of the bottom portion.
  • the syringe outer cylinder of the present invention includes a bottomed cylindrical outer cylinder main body portion composed of a bottom portion and a cylindrical portion, a projecting portion projecting from the bottom portion and to which a needle tube is fixed, and a needle tube fixed to the projecting portion. , a needle tube insertion portion into which the needle tube is inserted, and a flow passage that communicates the inner space of the outer cylinder main body portion and the needle tube insertion portion, and the flow passage is provided at a position connected to the needle tube insertion portion.
  • a small-diameter portion having a smaller diameter or a narrower width than the outer diameter of the needle tube; and a large-diameter portion having a larger diameter or a wider width than the small-diameter portion, provided so as to connect the inner space of the outer cylinder main body portion and the small-diameter portion. , wherein the small-diameter portion is provided closer to the tip side than the tip side surface of the bottom portion.
  • the wall thickness in the vicinity of the small-diameter portion is appropriately reduced by the large-diameter portion, the cooling rate in the vicinity of the small-diameter portion and the needle tube insertion portion during resin molding is improved, and the outer periphery of the tip side and the bottom portion of the projecting portion is improved. Since it is possible to suppress the effect of tension due to the resin whose temperature has dropped earlier on the side, it is possible to prevent molding defects such as sink marks and voids that occur in the small diameter portion and the needle tube insertion portion. As a result, it is possible to prevent problems from occurring in fixing the needle tube to the outer cylinder, so that it is possible to improve the ease of assembly and yield, and increase the productivity of the syringe.
  • the large diameter portion is configured to form a step with the small diameter portion.
  • the large-diameter portion has a portion in which the diameter expansion ratio or width expansion ratio decreases toward the rear end side.
  • This also makes it possible to reduce the thickness in the vicinity of the small-diameter portion to a greater extent, so that molding defects such as sink marks and voids that occur in the small-diameter portion and the needle tube insertion portion can be more effectively prevented.
  • the bottom portion is configured so that the thickness gradually decreases toward the large diameter portion side.
  • the bottom portion has a first tapered surface connected to the large diameter portion and a second tapered surface on the outer peripheral side of the first tapered surface on the rear end side surface.
  • the taper angle is preferably larger than the taper angle of the second tapered surface.
  • the tip surface of the gasket at the tip of the plunger can be properly brought into close contact with the rear end side surface, and the gasket can be deformed so that part of the tip surface of the gasket enters the large diameter portion. It is possible to further reduce the dead space in the outer cylinder, and to efficiently use the liquid medicine or the like administered to the human body or the like.
  • FIG. 1A is a front view of a syringe according to one embodiment of the present invention
  • FIG. B is a cross-sectional view taken along line II of FIG. 1A.
  • A is a front view of a gasket.
  • B is a cross-sectional view taken along line II-II of FIG. 2A.
  • FIG. 4 is an enlarged cross-sectional view showing the periphery of the bottom and protrusions;
  • FIG. 4 is an enlarged cross-sectional view showing the bottom portion and the periphery of the projecting portion in a state where the pusher is fully pushed;
  • FIG. 1A is a front view of a syringe 1 according to one embodiment of the present invention
  • FIG. 1B is a cross-sectional view taken along line II of FIG. 1A.
  • the syringe 1 includes a needle tube 10, an outer cylinder (barrel) 20 to which the needle tube 10 is fixed, a plunger (plunger) 30 inserted into the outer cylinder 20, and a gasket 40 attached to the tip of the plunger. , is equipped with
  • the needle tube 10 is a part that is punctured into the human body or the like.
  • the needle tube 10 is made of an appropriate metal such as stainless steel, and has a blade surface 11 formed at its distal end to sharpen the tip of the needle.
  • the size of the needle tube 10 is not particularly limited, and for example, 16 to 33 gauge (outer diameter: 1.7 to 0.2 mm) defined by ISO9626 can be used.
  • the shape of the needle tip of the needle tube 10 is not particularly limited, and may be one subjected to lancet processing or backcut processing. Further, the needle tube 10 may have inner and outer diameters that change in the axial direction.
  • the outer cylinder 20 is a part that internally accommodates a liquid medicine or the like to be administered to the human body.
  • the outer cylinder 20 is made of an appropriate transparent or translucent resin such as polypropylene, acrylonitrile-butadiene-styrene (ABS) resin, polycarbonate, or the like.
  • the outer cylinder 20 includes a bottomed cylindrical outer cylinder main body portion 21 that defines an internal space for accommodating a liquid medicine or the like, a cylindrical protruding portion 22 that protrudes from the distal end portion of the outer cylinder main body portion 21, have.
  • the outer tube main body 21 is composed of a cylindrical tube 21a having a substantially constant inner and outer diameter, and a disk-shaped bottom 21b that closes the tip of the tube 21a.
  • a rear end portion of the outer peripheral surface 21a1 of the cylindrical portion 21a is provided with an elliptical flange portion 21c protruding toward the outer peripheral side in plan view.
  • the flange portion 21c is a portion where the user of the syringe 1 puts fingers (for example, the index finger and the middle finger), and a tip side surface 21c1 of the flange portion 21c has a C-shaped non-slip surface in plan view.
  • a protrusion 21C2 is provided.
  • Flat portions 21c3 are provided on the front and rear end surfaces of the flange portion 21c so that the syringe 1 can be stably placed on a desk or the like in a horizontal state.
  • the outer peripheral surface 21a1 of the cylindrical portion 21a is also provided with a scale (not shown) that indicates the amount of the contained chemical solution.
  • a rear end portion of the inner peripheral surface 21a2 of the tubular portion 21a is provided with a projection 21d continuous in the circumferential direction. This protrusion 21d is for preventing the plunger 30 and the gasket 40 from easily coming off from the outer cylinder 20. As shown in FIG.
  • a projecting portion 22 protrudes toward the tip side from the central portion of the tip side surface 21b1 of the bottom portion 21b.
  • a cylindrical collar 23 for reinforcing the protrusion 22 and four trapezoidal ribs 24 are provided around the protrusion 22 .
  • the collar 23 is provided so as to surround the outer periphery of the proximal end of the projecting portion 22 .
  • the ribs 24 are circumferentially evenly spaced between the protrusion 22 and the collar 23 and are connected to the protrusion 22 , the bottom 21 b and the collar 23 .
  • an engaging concave portion 24b is provided on an end face 24a on the outer peripheral side of the rib 24 so as to be engaged with a cap (not shown) for protecting the needle.
  • the productivity of the syringe 1 is improved by devising the shapes of the bottom portion 21b and the projecting portion 22 of the outer cylinder 20 .
  • the details of the shapes of the bottom portion 21b and the projecting portion 22 will be described later.
  • the pusher 30 is inserted into the outer cylinder 20 through an opening on the rear end side of the outer cylinder 20, and is pressed when administering a liquid medicine or the like.
  • the pusher 30 is a rod-shaped member having a cross-shaped cross section, and is made of an appropriate resin such as polystyrene, polypropylene, polycarbonate, or the like.
  • a stepped columnar engaging portion 31 with a small diameter on the base end side that engages with the gasket 40, a flange-like pressing portion 32 that contacts and presses the gasket 40 during pressing operation is provided.
  • a disk-shaped force receiving portion 33 is provided at the rear end portion of the pusher 30 to receive the pressing force of the user's finger (for example, thumb) during pressing operation.
  • the gasket 40 seals the rear end side of the outer cylinder 20, and is made of a material having suitable elasticity such as thermoplastic elastomer, silicone rubber and butadiene rubber.
  • 2A is a front view of the gasket 40
  • FIG. 2B is a cross-sectional view taken along line II-II of FIG. 2A.
  • the gasket 40 is configured in a bottomed cylindrical shape with an open rear end side.
  • the outer peripheral surface 41 of the gasket 40 has a shape in which an intermediate portion 41a in the axial direction is constricted. It slides on the inner peripheral surface 21a2 of the portion 21a.
  • the outer diameter of the intermediate portion 41a is set smaller than the inner diameter of the cylindrical portion 21a. Further, the outer diameters of the leading end side sliding portion 41b and the rear end side sliding portion 41c are set larger than the inner diameter of the cylindrical portion 21a. Thus, by providing the front end side sliding portion 41b and the rear end side sliding portion 41c, it is possible to achieve both sealing performance and slidability.
  • the outer diameter of the intermediate portion 41a may be set substantially equal to the inner diameter of the cylindrical portion 21a. Since the outer diameter of the gasket 40 is reduced as a whole due to the compressive force received from the tubular portion 21a, the intermediate portion 41a and the inner peripheral surface 21a2 of the tubular portion 21a can be prevented from contacting each other in this case as well.
  • the outer diameters of the front end side sliding portion 41b and the rear end side sliding portion 41c may be set substantially the same, or may be set to different outer diameters in anticipation of deformation after molding.
  • a tip surface 42 of the gasket 40 is configured in a truncated cone shape, and a dome-shaped concave portion 42a is provided in the central portion.
  • the taper angle of the tip surface 42 is set to about 160°.
  • the dose of the liquid medicine is measured by reading the scale corresponding to the tip position of the contact surface with the inner peripheral surface 21a2 of the tip side sliding portion 41b, but the protrusion amount of the tip face 42 is large. and the vicinity of the scale becomes dark, making it difficult to read. In this embodiment, such a problem is prevented by reducing the protrusion amount of the tip surface.
  • the inner peripheral surface 43 of the gasket 40 is configured such that the inner diameter on the rear end side is smaller than that on the front end side so as to engage with the engaging portion 31 of the pusher 30 .
  • a tapered introduction portion 43a is provided at the rear end portion of the inner peripheral surface 43 so that the engagement portion 31 can be easily inserted.
  • the rear end surface 44 of the gasket 40 is formed in a planar shape substantially orthogonal to the axis, and is stably brought into contact with and pressed by the pressing portion 32 of the pusher 30 .
  • FIG. 3 is a cross-sectional view taken along the line II of FIG. 1A, showing an enlarged view of the periphery of the bottom portion 21b and the protruding portion 22.
  • FIG. The projecting portion 22 has a tapered enlarged diameter portion 22a at the base end portion, the outer diameter of which gradually increases toward the rear end side. ing.
  • a needle tube insertion portion 25 which is a hole into which the rear end side of the needle tube 10 is inserted and fixed, is provided inside the protruding portion 22.
  • the needle tube insertion portion 25 is axially bored from the distal end surface 22b of the projecting portion 22, and is composed of a needle tube support portion 25a on the rear end side and an adhesive agent accommodating portion 25b on the distal end side.
  • the needle tube support portion 25a has an inner peripheral surface 25a1 that is slightly larger than the outer diameter of the needle tube 10 and has a substantially constant inner diameter in the axial direction, and has a stepped rear end surface 25a2. That is, the needle tube support portion 25a holds the needle tube 10 in a posture along the axial center of the outer cylinder 20 by means of the inner peripheral surface 25a1, and brings the needle tube 10 to the axis by bringing the rear end surface 25a2 into contact with the rear end surface 12 of the needle tube 10. It is configured for positioning in a direction.
  • the adhesive containing portion 25b is tapered such that the inner diameter gradually increases from the needle tube supporting portion 25a toward the distal end side, and forms a filling space in which the adhesive 50 is filled between the needle tube 10 and the adhesive accommodating portion 25b.
  • two circumferentially continuous grooves 25b1 are provided in the adhesive containing portion 25b so that the cured adhesive 50 engages with the grooves 25b1.
  • the adhesive containing portion 25b may be subjected to appropriate surface treatment or the like to enhance the adhesiveness.
  • a flow passage 26 that communicates the inner space of the needle tube insertion portion 25 and the outer cylinder main body portion 21 is provided inside the projecting portion 22 and the bottom portion 21b.
  • the flow passage 26 is a passage through which a liquid medicine or the like flows, and is composed of a small diameter portion 26a on the distal end side connected to the needle tube insertion portion 25 and a large diameter portion 26b connecting the inner space of the outer cylinder main body portion 21 and the small diameter portion 26a. It is configured.
  • the small-diameter portion 26a has an inner diameter that is smaller than the outer diameter of the needle tube 10 and larger than the inner diameter of the needle tube 10, and is set to have a substantially constant inner diameter in the axial direction.
  • the needle tube support portion 25a is formed with a rear end surface 25a2, and the needle tube 10 can be positioned in the axial direction.
  • the large-diameter portion 26b has an inner diameter larger than that of the small-diameter portion 26a as a whole, and has a stepped tip surface 26b1.
  • the large-diameter portion 26b further includes a first rounded portion 26b2 whose diameter gradually increases toward the rear end side from the front end surface 26b1, and whose diameter expansion rate gradually decreases toward the rear end side, and a first rounded portion 26b2.
  • a tapered portion 26b3 that gradually expands in diameter toward the end side
  • a second rounded portion 26b4 that gradually expands in diameter from the tapered portion 26b3 toward the rear end side and whose diameter expansion rate gradually increases toward the rear end side.
  • the large-diameter portion 26b serves not only as a passage for liquid medicine, etc., but also to prevent molding defects such as sink marks and voids that occur in the needle tube support portion 25a, the small-diameter portion 26a, and their vicinity during resin molding of the outer cylinder 20. Configured to work as a steal.
  • the needle tube support portion 25a and the small-diameter portion 26a are portions formed by a core pin of a resin mold, and are regions with poorer heat dissipation than the tip side of the projecting portion 22 and the outer peripheral side of the bottom portion 21b. Therefore, around the needle tube support portion 25a and the small-diameter portion 26a, in the cooling step after filling the resin in the mold, the resin on the front end side of the protruding portion 22 and the outer peripheral side of the bottom portion 21b whose temperature has decreased earlier is pulled. As a result, sink marks, voids, and the like are likely to occur, and there is a possibility that the needle tube support portion 25a and the small-diameter portion 26a will not be formed into appropriate dimensions and shapes.
  • the small-diameter portion 26a and the large-diameter portion 26b are arranged so that the front end surface 26b1 of the large-diameter portion 26b (in other words, the rear end of the small-diameter portion 26a) is located on the front end side of the front end side surface 21b1 of the bottom portion 21b.
  • the needle tube support portion 25a and the small diameter portion 26a are formed to have appropriate dimensions and shapes, so that the needle tube can be appropriately positioned and fixed to the outer cylinder. That is, the syringe 1 of the present embodiment has both good assembling property and high yield, and is excellent in productivity.
  • a step is provided between the small diameter portion 26a and the large diameter portion 26b, and a portion in which the diameter expansion rate gradually decreases toward the rear end side is provided in the large diameter portion 26b. It is possible to prevent molding defects more effectively by largely hollowing out the vicinity. Furthermore, by providing the enlarged diameter portion 22a and the second rounded portion 26b4 in correspondence with each other, it is possible to reduce the change in thickness in the connecting region between the projecting portion 22 and the bottom portion 21b, thereby more effectively preventing defective molding. making it possible to
  • a tip side surface 21b1 of the bottom portion 21b is formed in a planar shape substantially orthogonal to the axial center of the outer cylinder 20.
  • the rear end side surface 21b2 of the bottom portion 21b facing the inner space of the outer cylinder main body portion 21 is tapered such that the thickness in the axial direction gradually decreases from the outer peripheral side toward the axial center side (large diameter portion 26b side). It is In the present embodiment, by configuring the bottom portion 21b in this manner, the thickness of the connecting region between the protruding portion 22 and the bottom portion 21b can be reduced, making it possible to prevent molding defects more effectively.
  • the rear end side surface 21b2 of the bottom portion 21b is divided into two types: a first tapered surface 21b2a connected to the large diameter portion 26b and a second tapered surface 21b2b on the outer peripheral side of the first tapered surface 21b2a.
  • the tapered surface and the taper angle of the first tapered surface 21b2a are set larger than the taper angle of the second tapered surface 21b2b to increase the adhesion between the gasket 40 and the tip surface 42 and reduce the dead space. I am trying to
  • FIG. 4 is a cross-sectional view taken along the line II of FIG. 1A, showing an enlarged view of the periphery of the bottom portion 21b and the protruding portion 22 when the pusher 30 is fully pushed.
  • the front end surface 42 of the gasket 40 is in a state of being in proper contact with the rear end side surface 21b2 of the bottom portion 21b.
  • the taper angle of the first tapered surface 21b2a is set to about 174°
  • the taper angle of the second tapered surface 21b2b is set to about 145° with respect to the taper angle of the tip surface 42 of the gasket 40 of about 160°.
  • the peripheral edge of the recess 42a of the tip surface 42 of the gasket 40 is inserted into the large diameter portion 26b.
  • the dead space in the outer cylinder 20 is further reduced.
  • the tip surface 42 of the gasket 40 can easily enter the large diameter portion 26b.
  • the rear end side surface 21b2 and the large diameter portion 26b of the bottom portion 21b are not provided with a portion projecting toward the rear end side or a portion configured in a tapered shape in the opposite direction. It is possible to smoothly guide air bubbles generated during suction toward the small-diameter portion 26 a and discharge them from the tip of the needle tube 10 .
  • the cross-sectional shapes of the needle tube insertion portion 25 and the flow path 26 are not limited to circular shapes, and various shapes such as elliptical shapes and polygonal shapes can be adopted.
  • the small-diameter portion 26a may be configured to be narrower than the outer diameter of the needle tube 10 in any direction perpendicular to the axis.
  • the large diameter portion 26b may be wider than the inner diameter of the small diameter portion 26a in any direction perpendicular to the axis, and the width expansion ratio is reduced in any direction perpendicular to the axis. It is preferable to have a portion that
  • the tip surface 26b1 of the large diameter portion 26b may be tapered, or the tip surface 26b1 may be omitted and the first rounded portion 26b2 may be connected to the small diameter portion 26a.
  • the rear end side surface 21b2 of the bottom portion 21b may be composed of one tapered surface, or may be composed of a curved surface. Further, the tip side surface 21b1 of the bottom portion 21b may be tapered.
  • the adhesive containing portion 25b may be omitted from the needle tube insertion portion 25, and the needle tube 10 may be fixed to the outer cylinder 20 by welding or insert molding.
  • the syringe and syringe outer cylinder of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. It is of course possible to add
  • the shape and arrangement of each part of the syringe 1 are not limited to the shapes and arrangements shown in the above-described embodiments, and various known shapes and arrangements can be adopted.

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  • 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

L'invention concerne une seringue et un cylindre de seringue qui peuvent accroître la productivité. La seringue 1 selon la présente invention comprend un tube d'aiguille 10 et un cylindre 20 auquel le tube d'aiguille 10 est fixé. Le cylindre 20 comprend : un corps de cylindre 21 qui se présente sous la forme d'un cylindre à fond et qui est composé d'une partie fond 21b et d'une partie cylindre 21a ; une partie en saillie 22, qui est installée de manière à faire saillie sur la partie fond 21b et sur laquelle le tube d'aiguille 10 est fixé ; une partie d'insertion de tube d'aiguille 25, qui est disposée sur la partie en saillie 22 et dans laquelle le tube d'aiguille 10 est inséré ; et un passage d'écoulement 26 à travers lequel l'espace intérieur du corps de cylindre 21 et la partie d'insertion de tube d'aiguille 25 communiquent. Le passage d'écoulement 26 comprend une partie à petit diamètre 26a qui est disposée à une position reliée à la partie d'insertion de tube d'aiguille 25 et qui présente un diamètre plus petit ou plus étroit que le diamètre extérieur du tube d'aiguille 10, et une partie à grand diamètre 26b qui est disposée de façon à relier l'espace intérieur du corps de cylindre 21 et la partie à petit diamètre 26a et qui présente un diamètre plus grand ou plus large que celui de la partie à petit diamètre 26a. La partie à petit diamètre 26a est disposée davantage vers le côté d'extrémité distale qu'une surface de côté d'extrémité distale 21b1 de la partie fond 21b.
PCT/JP2022/001744 2021-02-12 2022-01-19 Seringue et cylindre de seringue WO2022172708A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022581280A JPWO2022172708A1 (fr) 2021-02-12 2022-01-19

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Application Number Priority Date Filing Date Title
JP2021020614 2021-02-12
JP2021-020614 2021-02-12

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WO2022172708A1 true WO2022172708A1 (fr) 2022-08-18

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TW (1) TW202235114A (fr)
WO (1) WO2022172708A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008513063A (ja) * 2004-09-16 2008-05-01 インビロ メディカル デバイシーズ リミテッド 針突刺し損傷を防止する使い捨て安全注射器及びその再使用
JP2012254102A (ja) * 2011-06-07 2012-12-27 Taisei Kako Co Ltd 針付きバレル及びプレフィルドシリンジ
JP1492696S (fr) * 2013-08-27 2014-03-17
JP2014083292A (ja) * 2012-10-25 2014-05-12 Taisei Kako Co Ltd シリンジ
US20140316336A1 (en) * 2011-01-11 2014-10-23 Abu Dhabi National Industrial Projects Co. Auto-disable safety syringe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008513063A (ja) * 2004-09-16 2008-05-01 インビロ メディカル デバイシーズ リミテッド 針突刺し損傷を防止する使い捨て安全注射器及びその再使用
US20140316336A1 (en) * 2011-01-11 2014-10-23 Abu Dhabi National Industrial Projects Co. Auto-disable safety syringe
JP2012254102A (ja) * 2011-06-07 2012-12-27 Taisei Kako Co Ltd 針付きバレル及びプレフィルドシリンジ
JP2014083292A (ja) * 2012-10-25 2014-05-12 Taisei Kako Co Ltd シリンジ
JP1492696S (fr) * 2013-08-27 2014-03-17

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JPWO2022172708A1 (fr) 2022-08-18

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