CN100450560C - 一种自毁式胰岛素注射器 - Google Patents

一种自毁式胰岛素注射器 Download PDF

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CN100450560C
CN100450560C CNB200710067311XA CN200710067311A CN100450560C CN 100450560 C CN100450560 C CN 100450560C CN B200710067311X A CNB200710067311X A CN B200710067311XA CN 200710067311 A CN200710067311 A CN 200710067311A CN 100450560 C CN100450560 C CN 100450560C
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self
syringe
retaining ring
push rod
ring
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CN101020091A (zh
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林作钱
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SHANGHAI SOL-MILLENNIUM MEDICAL PRODUCTS Co Ltd
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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
    • A61M5/50—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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • 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
    • A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
    • A61M2005/3121—Means preventing contamination of the medicament compartment of a syringe via the proximal end of a syringe, i.e. syringe end opposite to needle cannula mounting end
    • 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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • A61M2005/5033—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston by use of an intermediate blocking member positioned between the syringe barrel and the piston rod to prevent retraction of the latter, e.g. toothed clip placed on the piston rod
    • 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
    • A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • 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
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • 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
    • A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod

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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

本发明涉及一种自毁式胰岛素注射器，包括针筒、推杆和胶塞，所述针筒的后端设有直径增大部分，该增大部分内设有一自毁机构，其特征在于：所述自毁机构由止退环和支撑环组成，所述止退环由支撑环支撑固定，所述止退环上端设有向中心聚拢的弹性棘爪，下端设有弹性撑爪，相应地针筒内壁设有弹性撑爪嵌入的凹槽，推杆上设与弹性棘爪相卡合的锥台。由以上技术方案可知：自毁机构设置在针筒的后端，可以不受针筒前端内径较小的限制，止退环和支撑环相互配合，推杆前推回拉时，止退环都不会移动，使自毁机构更可靠安全、结构更合理，且模具开设简单、装配更方便、药液残留量低。

Description

一种自毁式胰岛素注射器
技术领域
本发明属于一种医疗器具，具体地属于一种一次性使用的自毁式胰岛素注射器。
背景技术
胰岛素注射器是专门用于注射胰岛素的小剂量注射器，与大剂量注射器一样，为避免血液交叉传染，现在的胰岛素注射器均采用一次性用品，但这种一次性注射器，如果不人为的进行毁坏，是可以重复利用的，为了不使现有一次性胰岛素注射器被重复利用而导致交叉感染，传播疾病，设计自毁式一次性胰岛素注射器是行业内的必然选择。现有的胰岛素注射器其自毁机构大都设置在注射器的前端，但对于针筒内径较小的胰岛素注射器，却限制了自毁机构的合理设置，另外小剂量注射器要求药液残留量低，故自毁机构设置在前端的注射器不适合专门用于注射胰岛素。
发明内容
本发明所要解决的技术问题是：提供一种结构更为合理、模具开设简单、装配更方便、药液残留量低的自毁式胰岛素注射器，这种注射器，其自锁机构设置在注射器的后端。
为了解决上述技术问题，本发明采用以下技术方案：一种自毁式胰岛素注射器，包括针筒、推杆和胶塞，所述针筒的后端设有直径增大部分，该增大部分内设有一自毁机构，其特征在于：所述自毁机构由止退环和支撑环组成，所述止退环由支撑环支撑固定，所述止退环上端设有向中心聚拢的弹性棘爪，下端设有弹性撑爪，相应地针筒内壁设有弹性撑爪嵌入的凹槽，推杆上设与弹性棘爪相卡合的锥台。
由以上技术方案可知：自毁机构设置在针筒的后端，可以不受针筒前端内径较小的限制，止退环和支撑环相互配合，推杆前推回拉时，止退环都不会移动，使自毁机构更可靠安全、结构更合理，且模具开设简单、装配更方便、药液残留量低。
为了解决上述技术问题，本发明采用以下进一步的技术方案：
所述止退环中部设有凸台，相应地针筒的内壁上设有台阶，止退环凸台的上端面与针筒台阶的下端面相碰合。采用这种结构后，止退环被更好地固定，并阻止其随推杆向前推液而前移。
所述支撑环上端紧压止退环上的弹性撑爪，中部设有凸台。采用这种结构后：在支撑环的作用下，止退环可更好地被固定。
所述的推杆下端设有若干易断点。该置该易断点后当注射完毕后推杆向后抽拔时，能够沿所述易断点拉断，达到彻底自毁的目的。
附图说明
图1、为本发明未使用状态的剖视图；
图2、为图1的局部放大图；
图3、为止退环未安装状态的主视图；
图4、图3的E-E向剖视图；
图5、为图3的俯视图；
图6、为止退环安装状态的主视图；
图7、为图6的F-F向剖视图；
图8、为图6的俯视图；
图9、为支撑环的剖视图；
图10、为针筒的剖视图；
图11、为本发明开始抽液状态的剖视图；
图12、为本发明抽液完毕状态的剖视图；
图13、为本发明推液完毕状态的剖视图；
图14、为本发明自毁完毕状态的剖视图。
具体实施方式
参照图1、图2、图10，本发明包括一空心针筒1、一在针筒1内滑动的推杆2和安装在推杆2前端的胶塞3，针筒1的前端成型有一针座4，所述针筒1的后端设有直径增大部分，该增大部分内设有一自毁机构，所述自毁机构由止退环5和支撑环6组成，所述止退环5由支撑环6支撑固定，所述止退环5上端设有向中心聚拢的弹性棘爪7，下端设有弹性撑爪8，弹性棘爪7和弹性撑爪8的数量至少两个，相应地针筒1内壁设有弹性撑爪8嵌入的凹槽9，推杆2上设与弹性棘爪7相卡合的锥台10。推杆2上设有若干易断点，本实施例设有四个易断点A、B、C、D，当注射完毕后推杆2向后抽拔时，能够沿所述易断点拉断，从而使所述推杆2无法再次使用，达到彻底自毁的目的。
参见图3、图4、图5，此为止退环5未安装状态，此时弹性撑爪8处于自由状态，参见图6、图7、图8为止退环5安装状态，此时弹性撑爪8压紧后紧扣在针筒1内壁的凹槽9内。
参见图7、图9、图10，为了更好地固定止退环5，所述止退环5中部设有凸台11，相应地针筒1的内壁上设有台阶12，当推杆2向前推液时，止退环凸台11的上端面与针筒台阶12的下端面相碰合，阻止止退环5前移，所述支撑环6上端紧压止退环5上的弹性撑爪8，中部设有凸台13，止退环5的弹性撑爪8正好置于该凸台13的上方。
参见图1、图11、图12、图13、图14，首先，如图1所示，注射器未被使用时，止退环5下端的弹性撑爪8嵌入在针筒1内壁的凹槽9内，锥台10并没有穿过弹性棘爪7，同时为防止误操作的针筒1底部设有大护套14。随后如图11所示，为开始抽液状态，此时，已去除大护套14，如图12所示，此时为抽液完毕，如图13所示，此时推液完毕，锥台10就会穿过所述弹性棘爪7，使弹性棘爪7与锥台10卡合，从而阻碍推杆2往回运动，如图14所示，此时自毁完毕，用力将推杆2拉断，使推杆2断在针筒1内无法出来，防止调换推杆2和胶塞3再次使用，达到彻底自毁。

Claims (5)

1、一种自毁式胰岛素注射器，包括针筒(1)、推杆(2)和胶塞(3)，所述针筒(1)的后端设有直径增大部分，该增大部分内设有一自毁机构，其特征在于：所述自毁机构由止退环(5)和支撑环(6)组成，所述止退环(5)由支撑环(6)支撑固定，所述止退环(5)上端设有向中心聚拢的弹性棘爪(7)，止退环(5)下端设有弹性撑爪(8)，相应地针筒(1)内壁设有弹性撑爪(8)嵌入的凹槽(9)，推杆(2)上设与弹性棘爪(7)相卡合的锥台(10)。
2、如权利要求1所述的一种自毁式胰岛素注射器，其特征在于：所述止退环(5)中部设有凸台(11)，相应地针筒(1)的内壁上设有台阶(12)，止退环凸台(11)的上端面与针筒台阶(12)的下端面相碰合。
3、如权利要求1或2所述的一种自毁式胰岛素注射器，其特征在于：所述支撑环(6)上端紧压止退环(5)上的弹性撑爪(8)，支撑环(6)中部设有凸台(13)。
4、如权利要求1或2所述的一种自毁式胰岛素注射器，其特征在于：所述的推杆(2)下端设有若干易断点。
5、如权利要求3所述的一种自毁式胰岛素注射器，其特征在于：所述的推杆(2)下端设有若干易断点。
CNB200710067311XA 2007-02-12 2007-02-12 一种自毁式胰岛素注射器 Expired - Fee Related CN100450560C (zh)

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PCT/CN2008/000143 WO2008098464A1 (fr) 2007-02-12 2008-01-21 Seringue à insuline autodestructible

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Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CN100450560C (zh) * 2007-02-12 2009-01-14 林作钱 一种自毁式胰岛素注射器
CN101979108B (zh) * 2010-09-09 2012-07-04 上海双鸽实业有限公司 胰岛素注射器
CN111214728B (zh) * 2018-11-27 2023-06-02 赵着 一次性自毁注射器
CN109350805B (zh) * 2018-12-07 2024-08-09 河南曙光汇知康生物科技股份有限公司 一种针座自锁的一次性安全自毁注射器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995026764A1 (en) * 1994-03-31 1995-10-12 Unique Management Enterprises, Inc. Apparatus for shielding a syringe needle
CN1803212A (zh) * 2006-01-12 2006-07-19 林作钱 一种安全自毁医用注射器
CN1843517A (zh) * 2006-04-13 2006-10-11 林作钱 一种针头慢速自动回缩安全医用注射器
CN2863144Y (zh) * 2005-12-28 2007-01-31 林作钱 一种安全自毁医用注射器
CN1907511A (zh) * 2006-08-14 2007-02-07 林作钱 一次性使用自毁式注射器
CN201008690Y (zh) * 2007-02-12 2008-01-23 林作钱 一种自毁式胰岛素注射器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2008948A6 (es) * 1988-01-07 1989-08-16 Martinez Gimeno Carlos Vicente Jeringa de un solo uso auto-inutilizable.
AR243387A1 (es) * 1991-10-03 1993-08-31 Cesar Gabriel Corsich Jeringa hipodermica con embolo trabable para evitar su recarga y reutilizacion.
US6494863B1 (en) * 2001-10-15 2002-12-17 Retractable Technologies, Inc. One-use retracting syringe with positive needle retention
CN2546044Y (zh) * 2002-04-28 2003-04-23 山东威高集团有限公司 自毁式注射器
CN2595384Y (zh) * 2002-05-15 2003-12-31 王希平 小剂量自毁(自锁)式注射器
AU2005209013B2 (en) * 2004-01-28 2009-11-26 Unitract Syringe Pty Ltd One use syringe with ratchet on plunger and pawl on body
CN2703540Y (zh) * 2004-04-09 2005-06-08 山东威高集团医用高分子制品股份有限公司 一次性使用安全注射器
CN2803412Y (zh) * 2005-01-25 2006-08-09 林作钱 一种安全自毁式一次性使用的注射器
CN2865719Y (zh) * 2005-12-26 2007-02-07 江西三鑫医疗器械集团有限公司 自锁式自毁注射器
CN100450560C (zh) * 2007-02-12 2009-01-14 林作钱 一种自毁式胰岛素注射器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995026764A1 (en) * 1994-03-31 1995-10-12 Unique Management Enterprises, Inc. Apparatus for shielding a syringe needle
CN2863144Y (zh) * 2005-12-28 2007-01-31 林作钱 一种安全自毁医用注射器
CN1803212A (zh) * 2006-01-12 2006-07-19 林作钱 一种安全自毁医用注射器
CN1843517A (zh) * 2006-04-13 2006-10-11 林作钱 一种针头慢速自动回缩安全医用注射器
CN1907511A (zh) * 2006-08-14 2007-02-07 林作钱 一次性使用自毁式注射器
CN201008690Y (zh) * 2007-02-12 2008-01-23 林作钱 一种自毁式胰岛素注射器

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