[go: up one dir, main page]

WO2003047661A1 - Seringue autodestructrice a usage unique - Google Patents

Seringue autodestructrice a usage unique Download PDF

Info

Publication number
WO2003047661A1
WO2003047661A1 PCT/CN2002/000814 CN0200814W WO03047661A1 WO 2003047661 A1 WO2003047661 A1 WO 2003047661A1 CN 0200814 W CN0200814 W CN 0200814W WO 03047661 A1 WO03047661 A1 WO 03047661A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
self
ejector pin
disposable syringe
shoulder
Prior art date
Application number
PCT/CN2002/000814
Other languages
English (en)
Chinese (zh)
Inventor
Qingfeng Wu
Original Assignee
Qingfeng Wu
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
Priority claimed from CN 01258513 external-priority patent/CN2501515Y/zh
Priority claimed from CN 02272920 external-priority patent/CN2574701Y/zh
Application filed by Qingfeng Wu filed Critical Qingfeng Wu
Priority to AU2002365619A priority Critical patent/AU2002365619A1/en
Publication of WO2003047661A1 publication Critical patent/WO2003047661A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing

Definitions

  • the present invention relates to a medical device, and in particular, the present invention relates to a disposable syringe that can be self-destructed. Background technique
  • the present inventor proposes a self-destructing disposable syringe with simple structure, convenient use, and capable of making the puncture system into a standard piece.
  • the puncture system is not only suitable for slightly larger syringes, but also very suitable for small-volume syringes such as 1 ml.
  • the piercing system of a self-destructing disposable syringe needs to play a self-destructive role with a core rod of the syringe with a groove and a vent hole, and the core rod with a groove and a vent hole is a There is no technology.
  • the syringe includes a jacket and a core rod, the front end of the core rod has a groove extending axially rearward and a diameter confirmation book separated from a wall at the bottom of the groove
  • a puncture system is housed in the groove, and the puncture system includes an ejector pin and a needle; a front end of the groove is provided with a limiting member for limiting the movement range of the puncture system;
  • the thimble comprises a barb in the middle and a needle point at the tail end;
  • the ejector rod includes a front part that can be inserted into the tight-fitting groove of the bottom cover of the jacket, a middle limit shoulder and a leg, and the front part and the tight-fitting groove are interference fits.
  • the legs include front protrusions and rear protrusions from front to back. Footer inside
  • the front part of the ejector rod is inserted into the tight fit groove of the outer sleeve; the ejector pin cooperates with the leg of the ejector rod, and its barb is located above the ejector leg of the ejector rod.
  • the limiting member is a ring-shaped shaft sleeve, and an outer wall of the shaft sleeve may have a shoulder; moreover, the ring-shaped shaft sleeve may be integrally injection-molded with the thimble, and Cooperate with the groove on the groove wall.
  • the above-mentioned annular sleeve and the above-mentioned thimble can also be formed separately, and cooperate with the barbs on the groove wall.
  • the inner side of the leg of the ejector rod may or may not have a shoulder.
  • the shoulder at the front end of the ejector pin is located on the shoulder of the ejector rod. Above, its barb is located between the shoulder and the foot of the ejector.
  • the stopper may also be integrally injection-molded with the core rod.
  • a partition wall between the groove above the core rod and the radial vent hole forms a bottom wall of the groove, and the thickness of the bottom wall is preferably 0.5 mm or less.
  • the piercing system of the present invention can be assembled on a two-piece sleeve consisting of a jacket and a core rod, or on a three-piece sleeve composed of a jacket, a core rod and a "0" -type sealing ring; at the same time,
  • the two-piece or three-piece cone head equipped with the puncture system of the present invention can be either centered or offset.
  • the tight-fitting groove is an inner hole of the tapered head; when the tapered head of the outer casing is offset, the tight-fitting groove and the outer casing have a central axis.
  • FIG. 1 is an exploded schematic view of a puncturing system according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram of a core rod according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic diagram when the assembly of Embodiment 1 of the present invention is completed
  • FIG. 4 is a schematic diagram of instantaneous drug withdrawal in Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of a medicine drawing process in Embodiment 1 of the present invention.
  • Fig. 6 is a schematic view showing that the injection has been completed in Example 1 of the present invention.
  • FIG. 7 is a schematic exploded view of a puncturing system according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic diagram of a core rod according to Embodiment 2 of the present invention.
  • FIG. 9 is a schematic diagram when the assembly of Embodiment 2 of the present invention is completed.
  • FIG. 10 is a schematic diagram of instantaneous drug withdrawal in Embodiment 2 of the present invention.
  • FIG. 11 is a schematic diagram of a medicine drawing process in Embodiment 2 of the present invention.
  • Example 2 of the present invention is almost completed
  • FIG. 13 is a schematic diagram when the injection has been completed and the ejector pin 33 of the syringe has punctured the bottom wall 211 of the closed groove of the core groove 21 in the embodiment 2 of the present invention; detailed description
  • Embodiment 1 of the present invention includes a jacket 1 and a core rod 2.
  • the front end of the core rod 2 has a groove 21 extending axially rearward, and a groove 24 is formed on the inner wall of the groove 21.
  • the groove 21 contains a puncture system 3.
  • the puncture system 3 includes an ejector pin 32 and an ejector pin 33.
  • the front end of the groove 21 is provided with a limiting member 4 for limiting the movement range of the puncturing system 3; the limiting member 4 is an annular shaft sleeve, and a shoulder 41 is provided on the outer wall of the sleeve, and the shaft sleeve can be connected with the ejector pin 33. Injection molding.
  • the thimble 33 includes a barb 332 in the middle and a needle point 333 at the tail end.
  • the ejector pin 32 includes a front portion 321, a middle limit shoulder 322, and a leg portion 323 that can be inserted into the outer cover 1 and tight fit 11 to form a tight fit.
  • the ejector portion 321 and the tight fit groove 11 are interference fits.
  • the leg portion 323 From the front to the back, it includes an outer protrusion 324 and an upper leg 326 on the inner side of the rear end thereof.
  • the inner side refers to the mating surface of the ejector pin 32 and the ejector pin 33, and the outer side is the inner back surface.
  • the front portion 321 of the ejector pin 32 is inserted into the tight fit groove 11 of the outer sleeve 1; the shoulder 41 of the annular sleeve 4 is embedded in the groove 24 of the core rod 2; The legs 323 fit inside, and its barb 332 is located on the top leg 326 of the top rod 32.
  • the core rod 2 is pushed forward; at the end of the injection, the ejector leg 326 at the end of the ejector pin 32 is pressed against the middle barb 332 of the ejector pin 33.
  • the front portion 321 of the ejector pin 32 enters the tight fit groove 11 of the outer sleeve 1, and the tip 333 of the tail end of the ejector pin 33 places the bottom of the groove 21 of the core rod 2.
  • the wall 211 is punctured, thereby achieving self-destruction of the syringe.
  • Embodiment 2 of the present invention includes a jacket 1 and a core rod 2.
  • a front end of the core rod 2 is provided with a groove 21 extending axially rearward, and the groove 21 houses a puncture system 3.
  • the puncture system 3 includes an ejector pin 32 and an ejector pin 33; the front end of the groove 21 is provided with a restricting member 4 for restricting the movement range of the puncturing system 3, the restricting member 4 is a separate sleeve, and the outer wall of the sleeve has a protrusion
  • the shoulder 41 cooperates with the barb 22 on the wall of the groove 21.
  • the thimble 33 includes a front shoulder 331, a barb 332 in the middle, and a needle point 333 at the tail.
  • the top 32 includes a front portion 321, a middle limit shoulder 322, and a leg portion that can be inserted into the outer sleeve 1 and tightly fit the groove 11.
  • the front part 321 of the ejector rod is in an interference fit with the tight fit groove 11, and the leg part 323 includes an outer protrusion 324, an inner protrusion 325, and an inner leg 326 from the front to the rear.
  • the mating surface of the ejector pin 32 and the ejector pin 33 is an inner back surface.
  • the front part 321 of the ejector pin 32 is inserted into the tight-fitting groove 11 of the outer sleeve 1; Above, the barb 332 is located between the shoulder 325 and the leg 326 of the ejector pin 32.
  • the front portion 321 of the ejector rod 32 is caught by the tight fit groove 11 on the outer sleeve 1, and the outer wall shoulder 41 of the sleeve 4 is caught by the barb 22 on the inner wall of the core rod 2.
  • the ejector pin 33 With the core rod 2 and pull it out, so that the sleeve 4 and the ejector pin 33 move backward with respect to the ejector pin 32, and the barb 332 in the middle of the ejector pin 33 is pulled behind the ejector leg 326 at the end of the ejector pin 32 .
  • the core rod 2 is pushed forward; at the end of the injection, as shown in FIG. 12, the top leg 326 at the end of the ejector pin 32 is pressed against the middle barb 332 of the ejector pin 33.
  • the front portion 321 of the ejector pin 32 enters the tight groove 11 of the outer sleeve 1, and the tip 333 of the tail end of the ejector pin 33 places the bottom of the groove 21 of the core rod 2.
  • the wall 211 is punctured, thereby achieving self-destruction of the syringe.
  • the limiting member 4 can be integrally injection-molded with the core rod 2.
  • the present invention has a radial hole 23 immediately below the bottom wall 211 of the groove 21 of the core rod 2, and the thickness of the bottom wall 211 is less than 0.5 gall.
  • the self-destructing device does not bite and self-destruct in advance during assembly and transportation, so there is no need to set a protective plug or other foreign material on the core rod, the structure is simple, and the syringe is finished after the injection Realizing self-destruction without knowing it, it is particularly convenient to use.
  • This technology is not only suitable for large-volume syringes, but also very suitable for small-volume syringes.
  • the self-destructive performance of the present invention combined with a residue-free design is particularly suitable for low-dose injections, such as vaccines and immunizations.

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 se rapporte à une seringue autodestructrice à usage unique qui comporte une tige centrale (1), une manchon externe (2) et un système de perçage (3). Ledit système de perçage (3) est inséré dans une rainure concave (21) qui est formée sur l'extrémité avant de ladite tige centrale (2) et s'étend vers l'arrière le long d'une direction axiale, ce système de perçage (3) comprenant une partie tige (32) et une partie aiguille (33). Une partie butée (4) conçue pour limiter l'étendue du déplacement du système de perçage est formée sur l'extrémité avant de ladite rainure concave (21). La partie avant (321) de ladite partie tige (32) du système de perçage est insérée dans une rainure (11) pour ajustement serré dudit manchon externe (1). La partie aiguille (33) est adaptée à la partie tronçon (323) de ladite partie tige (32).
PCT/CN2002/000814 2001-12-05 2002-11-18 Seringue autodestructrice a usage unique WO2003047661A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002365619A AU2002365619A1 (en) 2001-12-05 2002-11-18 A self destructive single use syringe

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN 01258513 CN2501515Y (zh) 2001-12-05 2001-12-05 自毁式一次性注射器
CN01258513.0 2001-12-05
CN 02272920 CN2574701Y (zh) 2002-08-29 2002-08-29 改进型自毁式一次性注射器
CN02272920.8 2002-08-29

Publications (1)

Publication Number Publication Date
WO2003047661A1 true WO2003047661A1 (fr) 2003-06-12

Family

ID=25740959

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2002/000814 WO2003047661A1 (fr) 2001-12-05 2002-11-18 Seringue autodestructrice a usage unique

Country Status (2)

Country Link
AU (1) AU2002365619A1 (fr)
WO (1) WO2003047661A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991008011A1 (fr) * 1989-11-23 1991-06-13 Patrice Elfandi Materiel a injection (seringue et aiguille) inutilisable apres usage
CN1055487A (zh) * 1990-04-13 1991-10-23 阿兰·哈玛米 一次性使用的皮下注射器
WO1994020162A1 (fr) * 1993-03-03 1994-09-15 New Applications In Plastic, S.L. Nouvelle seringue hypodermique jetable
WO1994028955A2 (fr) * 1993-06-03 1994-12-22 Daniel Delannoy Seringue a usage medical unique autodestructive
US5382235A (en) * 1993-07-07 1995-01-17 R.M.S. Safety, Inc. Device for capturing and retracting the needle cannula of a disposable syringe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991008011A1 (fr) * 1989-11-23 1991-06-13 Patrice Elfandi Materiel a injection (seringue et aiguille) inutilisable apres usage
CN1055487A (zh) * 1990-04-13 1991-10-23 阿兰·哈玛米 一次性使用的皮下注射器
WO1994020162A1 (fr) * 1993-03-03 1994-09-15 New Applications In Plastic, S.L. Nouvelle seringue hypodermique jetable
WO1994028955A2 (fr) * 1993-06-03 1994-12-22 Daniel Delannoy Seringue a usage medical unique autodestructive
US5382235A (en) * 1993-07-07 1995-01-17 R.M.S. Safety, Inc. Device for capturing and retracting the needle cannula of a disposable syringe

Also Published As

Publication number Publication date
AU2002365619A1 (en) 2003-06-17

Similar Documents

Publication Publication Date Title
JP4762141B2 (ja) 薬剤を経口投与するための装置
US6530903B2 (en) Safety syringe
JP6118400B2 (ja) 薬液注射器
CN108290000B (zh) 具有无菌特征部的混合和注射装置
US8690825B2 (en) Safety syringe
CN102176938A (zh) 具有可回缩针的通用注射器
US20040049160A1 (en) Safety hypodermic syringe
CN110152126B (zh) 笔针
JP2009506849A (ja) 格納式注射針を有する使い捨て安全注射器
EP2776097B1 (fr) Aiguille de seringue rétractable perfectionnée
WO2007065324A1 (fr) Seringue de securite jetable
JP2018075415A (ja) 自動無効化シリンジ組立体
US20060064060A1 (en) Safety syringe with broken plunger
WO2010006499A1 (fr) Injecteur unique autodestructeur scellé
US7637888B2 (en) Syringe
TWM624770U (zh) 可用於免針加藥之安全針筒
WO2003047661A1 (fr) Seringue autodestructrice a usage unique
TWI564048B (zh) Push the unloading needle safety syringe
US20070173758A1 (en) Safety hypodermic syringe
CN2936285Y (zh) 可回缩针头的安全注射器
CN110997047A (zh) 安全针筒
TWM511336U (zh) 推進卸針式安全注射器
CN222172797U (zh) 一次性回缩自毁式注射器
WO2004080513A1 (fr) Seringue equipee d'une structure d'auto-destruction
TW200808397A (en) A safety syringe device

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP