CN2873231Y - 一次性使用自毁式注射器 - Google Patents

一次性使用自毁式注射器 Download PDF

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Publication number
CN2873231Y
CN2873231Y CNU200520103771XU CN200520103771U CN2873231Y CN 2873231 Y CN2873231 Y CN 2873231Y CN U200520103771X U CNU200520103771X U CN U200520103771XU CN 200520103771 U CN200520103771 U CN 200520103771U CN 2873231 Y CN2873231 Y CN 2873231Y
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push rod
convex edge
needle stand
steel disc
cylindrical shell
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冯忠
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WUXI YUSHOU MEDICAL APPLIANCES CO Ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50Devices 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
    • A61M5/5013Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50Devices 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
    • A61M5/5013Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • A61M2005/5026Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston allowing single filling of syringe
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50Devices 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
    • A61M5/5013Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • A61M2005/5033Means 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

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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

本实用新型涉及一种一次性使用自毁式注射器,它包括护套(1)、针尖(2)、针座(3)、推杆(4)、筒体(5)、止回钢片(6),其特征在于:针座(3)设有凸沿(7),推杆(4)设有密封环(8),前段可移部位(9),前段限位台阶(10)、棘齿槽(11)、后段可移部位(12)和后段限位台阶(13),筒体(5)设有保护凸沿(14),止回钢片(6)上设有棘齿(15)、止回刺(16)。它使用操作方便,一次性注射后即自毁。

Description

一次性使用自毁式注射器
                     技术领域
本实用新型涉及一种一次性使用自毁式注射器,属于医疗用注射器。
                     背景技术
目前,国内外医院内所广泛使用的一次性使用无菌注射器的同时,已开始推广使用自毁式注射器来防止重复使用。由于自毁式注射器的结构复杂,在使用上有很多改变,医务人员感觉很不方便,加上自毁式注射器存在着许多问题,尤其是小容量微量注射器,如疫苗注射器、胰岛素注射器等,如抽液时带入针筒内的空气不易排出,不易观察回血等现象,以上关键技术不能得到完全解决,有可能造成医疗事故,加上有些自毁式注射器精度高、加工难度大,很难形成大批量生产,为解决以上不足,有待于改进。
                     发明内容
本实用新型的目的在于提供一种抽液时能作排气动作,注射时能观察回血现象,同时操作方便,几乎和常规普通一次性使用注射器同样操作。注射药液便开始自毁生效,无法重复使用。克服了其它自毁式注射器的不足。
本实用新型是通过以下技术方案实现的:
一种一次性使用自毁式注射器,它包括护套1、针尖2、针座3、推杆4、筒体5、止回钢片6,其特征在于:针座3设有凸沿7,推杆4设有密封环8,前段可移部位9,前段限位台阶10、棘齿槽11、后段可移部位12和后段限位台阶13,筒体5设有保护凸沿14,止回钢片6上设有棘齿15、止回刺16。
如以上所述的一次性使用自毁式注射器,其特征在于:推杆4上用于排气用的后段可移部位12其形状是圆形的或方形的,推杆4上的棘齿槽11是单条的或多条的。
如以上所述的一次性使用自毁式注射器,其特征在于:所述的筒体5上的保护凸沿14的内径应大于针座3上的针座凸沿7的外径,同时二者应紧密配合。
如以上所述的一次性使用自毁式注射器,其特征在于:推杆4的前段可移部位9,该可移部位9的长度应大于止回钢片6的长度,该长度应该超出止回钢片6长度的2.5mm至3.5mm之间。
如以上所述的一次性使用自毁式注射器,其特征在于:所述的推杆4上的密封环8可以是分体的用其它材料制作的密封塞和密封圈。
它包括护套、针尖、针座、推杆、筒体、止回钢片,护套套在针座上保护胶在针座上的针尖,针座紧配在筒体头部,其针座上凸沿7紧配于筒体上保护凸沿14中,由于针座上凸沿7被筒体保护凸沿所复盖。带针的针座装配上后用手无法被取下,解决了其它自毁注射器可以被手取下的不足。筒体内装有一推杆,推杆上设有密封环、前段可移部位、前段限位台阶、棘齿槽、后段移位部和后段限位台阶,筒体上设有保护凸沿,止回钢片上设有棘齿和止回刺,安全性、自毁性好,适合大批量生产。
                     附图说明
图1为本实用新型的整体结构示意图;
图2是推杆向后抽液状态的示意图;
图3是药液抽满,同时止回钢片已完全进入前段限位台阶同时已被卡住的示意图;
图4是药液注射完毕的示意图;
图5是护套的示意图;
图6是推杆的示意图;
图7是针座和针尖胶粘后示意图;
图8是筒体的示意图;
图9是止回钢片的示意图;
图10、图11是推杆头部装有胶塞或密封环的另两种示意图。
图中1、护套,2、针尖,3、针座,4、推杆,5、筒体,6、止回钢片,7、针座凸沿,8、密封环,9、前段可移部位,10、前段限位台阶,11、棘齿槽,12、后段可移部位,13、后段限位台阶,14、保护凸沿,15、棘齿,16、止回刺。
                     具体实施方式
以下结合附图和实施例对本实用新型进一步说明,参见附图,本实用新型它包括护套1、针尖2、针座3、推杆4、筒体5、止回钢片6。针尖2胶粘在针座3上,针座3上设有凸沿7,推杆4上设有密封环8、前段可移部位9、前段限位台阶10、棘齿槽11、后段可移部位12和后段限位台阶13,筒体5上设有保护凸沿14,止回钢片6上设有棘齿15、止回刺16。把装有针尖2的针座3紧配按装在筒体5前沿头部,使针座凸沿7的外径紧配在筒体5上的保护凸沿14的内径中,使其复盖住针座凸沿7,针座3上套有护套1,然后把止回钢片6按装在推杆4后段限位台阶13上,装进筒体5中,使得棘刺15顶住筒体内壁上,拔掉护套1开始抽液,抽液时如带进气泡,利用后段可移部位12可反复进行排气动作,然后再次向后抽液至止回钢片6进入推杆4中前段可移部位9,再次把筒体5内的气泡排尽,此时止回刺16已顶住前段限位台阶10上,疫苗注射时由于前段可移部位9的长度大于钢片长度2.5mm至3.5mm,所以当针尖进入体内后仍可向后拉动推杆,观察是否有回血现象。注射时由于止回刺16顶住前段限位台阶10,注射液体时止回钢片6随同推杆同时前移,药液注射完毕时止回钢片6的棘齿15顶住筒体内壁,推杆4无法被拉出,达到了自毁作用。

Claims (5)

1、一种一次性使用自毁式注射器,它包括护套(1)、针尖(2)、针座(3)、推杆(4)、筒体(5)、止回钢片(6),其特征在于:针座(3)设有凸沿(7),推杆(4)设有密封环(8),前段可移部位(9),前段限位台阶(10)、棘齿槽(11)、后段可移部位(12)和后段限位台阶(13),筒体(5)设有保护凸沿(14),止回钢片(6)上设有棘齿(15)、止回刺(16)。
2、根据权利要求1所述的一次性使用自毁式注射器,其特征在于:推杆(4)上用于排气用的后段可移部位(12)其形状是圆形的或方形的,推杆(4)上的棘齿槽(11)是单条的或多条的。
3、根据权利要求1所述的一次性使用自毁式注射器,其特征在于:所述的筒体(5)上的保护凸沿(14)的内径应大于针座(3)上的针座凸沿(7)的外径,同时二者应紧密配合。
4、根据权利要求1所述的一次性使用自毁式注射器,其特征在于:推杆(4)的前段可移部位(9),该可移部位(9)的长度应大于止回钢片(6)的长度,该长度应该超出止回钢片(6)长度的2.5mm至3.5mm之间。
5、根据权利要求1所述的一次性使用自毁式注射器,其特征在于:所述的推杆(4)上的密封环(8)可以是分体的用其它材料制作的密封塞和密封圈。
CNU200520103771XU 2005-08-16 2005-08-16 一次性使用自毁式注射器 Expired - Lifetime CN2873231Y (zh)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148299A1 (fr) * 2007-06-01 2008-12-11 Zhong Feng Seringue autodestructive avec médicament dissous pour usage unique
CN101314062B (zh) * 2007-06-01 2010-04-14 冯忠 一次溶药的自毁式注射器
CN102258430A (zh) * 2010-05-23 2011-11-30 无锡市宇寿医疗器械有限公司 一种在溶药过程中自毁性能自动生效的注射器
CN102038988B (zh) * 2010-01-15 2012-10-03 盛春胜 一次性自毁式医用注射器
WO2013127135A1 (zh) * 2012-03-01 2013-09-06 Bai Baodong 公称容量取决于簧片位置的高可靠性自毁式注射器
CN103405834A (zh) * 2013-08-10 2013-11-27 江苏康友医用器械有限公司 一种自毁式一次性使用注射器
CN105031772A (zh) * 2015-08-19 2015-11-11 江西丰临医疗科技股份有限公司 单次使用自动失效注射器

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148299A1 (fr) * 2007-06-01 2008-12-11 Zhong Feng Seringue autodestructive avec médicament dissous pour usage unique
EP2168622A1 (en) * 2007-06-01 2010-03-31 Ltd. Wuxi Xushou Medical Appliances Co. Self-destructive syringe with drug dissolved for once
CN101314062B (zh) * 2007-06-01 2010-04-14 冯忠 一次溶药的自毁式注射器
EP2168622A4 (en) * 2007-06-01 2012-06-27 Wuxi Yushou Medical Appliances Co Ltd AUTODESTRUCTIVE SYRINGE WITH DISSOLVED MEDICINE FOR SINGLE USE
CN102038988B (zh) * 2010-01-15 2012-10-03 盛春胜 一次性自毁式医用注射器
CN102258430A (zh) * 2010-05-23 2011-11-30 无锡市宇寿医疗器械有限公司 一种在溶药过程中自毁性能自动生效的注射器
WO2013127135A1 (zh) * 2012-03-01 2013-09-06 Bai Baodong 公称容量取决于簧片位置的高可靠性自毁式注射器
CN103405834A (zh) * 2013-08-10 2013-11-27 江苏康友医用器械有限公司 一种自毁式一次性使用注射器
CN105031772A (zh) * 2015-08-19 2015-11-11 江西丰临医疗科技股份有限公司 单次使用自动失效注射器
CN105031772B (zh) * 2015-08-19 2018-11-27 江西丰临医疗科技股份有限公司 单次使用自动失效注射器

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