WO2012058790A1 - 双安全型留置针 - Google Patents

双安全型留置针 Download PDF

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Publication number
WO2012058790A1
WO2012058790A1 PCT/CN2010/001779 CN2010001779W WO2012058790A1 WO 2012058790 A1 WO2012058790 A1 WO 2012058790A1 CN 2010001779 W CN2010001779 W CN 2010001779W WO 2012058790 A1 WO2012058790 A1 WO 2012058790A1
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WO
WIPO (PCT)
Prior art keywords
duckbill
check valve
indwelling
indwelling needle
seat
Prior art date
Application number
PCT/CN2010/001779
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English (en)
French (fr)
Original Assignee
王国胜
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 王国胜 filed Critical 王国胜
Priority to PCT/CN2010/001779 priority Critical patent/WO2012058790A1/zh
Publication of WO2012058790A1 publication Critical patent/WO2012058790A1/zh

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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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Definitions

  • the present invention relates to a medical medical device consumable, and more particularly to a double-safe indwelling needle for use in vein puncture. Background technique
  • the traditional indwelling needle needs to exit the steel needle after completing the technical operation.
  • the needle tip of the steel needle is completely exposed, and the medical staff is easily injured, causing the spread of infectious diseases, especially hepatitis B and AIDS, and the physical and mental health of the medical staff.
  • the present invention provides a double-safe indwelling needle with simple structure and convenient use, which can effectively protect medical personnel from injury, and at the same time avoids patients suffering from needle slipping or joint loss. The risk of death.
  • Double safety indwelling needles include: sheath, sling hose, rivet, indwelling hose seat, steel needle, steel needle holder, retractable protective sleeve, anti-overflow plug, connecting tube, stop clip, Y-type tee,
  • the antibacterial cap and the duckbill check valve are characterized in that the retractable protective sleeve is located between the overflow prevention plug and the needle seat.
  • the double safety type indwelling needle is characterized in that the retractable protective sleeve comprises a front end connecting portion, a retractable main body tube and a rear end connecting portion, wherein the three parts are integrally connected.
  • the double safety type indwelling needle is characterized in that the rear end connecting portion of the telescopic protective sleeve is bonded to the needle seat In one piece, the front end connection is provided in the indwelling hose seat, and the steel needle ⁇ 1 is enclosed therein.
  • the double safety type indwelling needle is characterized in that the inner structure of the front end connecting portion of the telescopic protective sleeve is a cone shape, and the cone is hollow, and the steel needle penetrates from the vertebral body.
  • the double safety type indwelling needle is characterized in that the bottom of the side of the hose seat is provided with a duckbill check valve, and the duckbill check valve is connected with the infusion conduit, and the liquid flows through the duckbill through the infusion catheter.
  • the valve of the duckbill is open due to the action of the liquid and the positive pressure. At this time, the liquid can be smoothly infused.
  • the duckbill check valve The valve is closed due to the elastic retractive force, thereby effectively preventing backflow of blood and liquid.
  • the double safety type indwelling needle is characterized in that the duckbill check valve comprises a valve body and a duckbill, and the valve body and the duckbill are integrally connected, the valve body has a cylindrical structure, and the duckbill is shaped like a conical diaphragm. , and there are retractable openings or holes at the apex of the duckbill.
  • the double safety type indwelling needle is characterized in that the outer diameter of the valve body of the duckbill check valve is the same as the inner diameter of the pipe body of the installed portion, and is fixed by the curing glue during installation, thereby making the duckbill check valve The position inside the tube is not easy to change.
  • the double safety type indwelling needle is characterized in that the duckbill check valve can be installed inside the side support of the hose seat, and can also be installed in the side of the infusion three-way side, that is, the dosing nozzle.
  • the double safety type indwelling needle is characterized in that the Y-type tee is equipped with a positive pressure function, and the structure thereof comprises a casing, a base, a piston, a large sealing ring, a small sealing ring, a spring, and the positive pressure joint without any connecting piece and In the case of the connection, it is closed and kept sterile.
  • the connector can connect and lock the syringe, the infusion set and the infusion dish.
  • the principle of the positive pressure Y-type tee produces a positive pressure function during use, and the external syringe is removed. When the item is continued, a positive pressure is generated, which prevents the blood from flowing back and blocks the indwelling needle.
  • DRAWINGS Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a cross-sectional view of the structure of the present invention
  • Figure 3 is a diagram of the implementation protection state of the retractable protective cover
  • Figure 4 is a partial cross-sectional view of the duckbill check valve in the side branch of the hose seat
  • Figure 5 is a partial cross-sectional view of the duckbill check valve in the Y-shaped three-way side branch
  • Figure 6 is a schematic view of the duckbill check valve
  • Figure 7 is a partial cross-sectional view of the positive pressure joint
  • the double safety type indwelling needle includes a sheath 1, an indwelling hose 2, a rivet 3, an indwelling hose seat 4, a steel needle 5, a steel needle holder 6, a retractable protective sleeve 7, an anti-overflow plug 8, Connecting pipe 9, stop clip 10, Y-type tee 11, anti-bacterial cap 12, duckbill check valve 13; retractable protective cover 7 including front end connecting portion 7-1, retractable main body tube 7-2, rear end The connecting portion 7-3, wherein the three portions are integrally connected, the rear end connecting portion 7-3 of the telescopic protective sleeve 7 is integrally bonded with the steel needle holder 6, and the front end connecting portion 7-1 is provided in the indwelling hose seat 4, the steel needle 5 is enclosed therein, the steel needle 5 passes through the front end connecting portion 7-1 through the anti-overflow plug 8 into the indwelling hose 2, and is left inside, and after exiting the puncture, the steel needle 5 is withdrawn, the tele
  • the duckbill check valve 13 includes a valve body 13-1 and a duckbill 13-2, and the valve body 13-1 and the duckbill 13-2 are integrally connected, and the valve body 13-1 has a cylindrical structure, and the duckbill 13 -2 shaped like a conical diaphragm, and there is a retractable opening or hole at the apex of the duckbill 13-2.
  • the duckbill check valve 13 can be installed inside the side branch of the indwelling hose seat 4, and can also be installed in the Y-type three Pass 11 side branch inside.
  • the positive pressure joint 11-1 structure on the Y-type tee 11 includes a housing 11-1-1, a base 11-1-2, a piston 11-1-3, a large sealing ring 11-1-4, and a small sealing ring 11- 1-5, spring 11-1-6, one end of the spring 11-1-6 is mounted on the convex cylinder of the base 11-1-2, and the other end is sleeved with the piston 11-1-3, the piston 11-1- 3
  • the upper recess is fitted with a small seal 11-1-5
  • the lower recess is fitted with a large seal 11-1-4
  • the outer casing 11-1-1 is mounted on the base 11-1-2.
  • the positive pressure joint is closed in the absence of any connecting piece, and the sterility is maintained.
  • the joint can connect and lock the syringe, the infusion set, the infusion dish, and the principle of the positive pressure ⁇ tee is generated during use.
  • the positive pressure function continues to generate a positive pressure when an external syringe or the like is removed, which prevents the blood from flowing back and blocks the indwelling needle.

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)

Description

双安全型留置针
技术领域 本实用新型涉及一种医用的医疗器械耗材， 具体来说是涉及一种在静脉穿 刺时使用的一种双安全型留置针。 背景技术
说
传统的留置针在完成技术操作后需退出钢针， 钢针针尖完全裸露在外， 易 朿 ij伤医护人员， 造成传染病的传播， 特别是乙肝和艾滋病， 对医护人员的身心
书
健康会造成很大的伤害。
处在病人的方面考虑， 有时在输液过程中， 有些医院都是将头皮针直接穿 在肝素帽上进行完成输液， 或是直接接输液器， 在输液过程中可能会出现针头 滑出或是接头脱落， 如不及时发现可能会导致病人因失血造成死亡的严重后果。 实用新型内容 本实用新型针对上述问题而提供的一种结构简单、 使用方便的双安全型留 置针， 即能有效地保护医护人员不受伤害， 同时又能避免因针头滑出或接头脱 落造成病人死亡的风险。
本实用新型解决其技术问题所采取的技术方案是：
双安全型留置针包括: 护套、 阖置软管、 铆钉、 留置软管座、 钢针、 钢针 座、 可伸缩保护套、 防溢塞、 连接管、 止流夹、 Y式三通、 防菌帽、 鸭嘴单向 阀， 其特征在于可伸缩保护套位于防溢塞与针座之间的位置。
所述的双安全型留置针， 其特征在于可伸缩保护套包括前端连接部、 可伸 縮主体管、 后端连接部， 其中三部分为一体化相连。
所述的双安全型留置针， 其特征在于可伸缩保护套后端连接部与针座粘接 连为一体， 前端连接部配备在留置软管座内， 将钢针^ 1围在其内。
所述的双安全型留置针， .其特征在于可伸缩保护套前端连接部内部结构是 一锥体形状， 锥体为中空设计， 钢针从椎体中穿入。
所述的双安全型留置针， 其特征在于软管座侧支内底部装有鸭嘴单向阀， 鸭嘴单向阀再与输液导管相连接， 当液体通过输液导管流经鸭嘴单向阀时， 由 于液体的冲挤和正压的作用， 鸭嘴的阀门处于开放状态， 这时能确保液体顺利 的输注， '先液体流经鸭嘴单向阀时， 鸭嘴单向阀的阀门由于弹性回縮力而处于 关闭状态， 从而有效地防止了血液和液体的返流。
所述的双安全型留置针， 其特征在于鸭嘴单向阀包括阀体、 鸭嘴， 且阀体 和鸭嘴为一体化连接， 其阀体为圆柱形结构， 鸭嘴形似圆锥形膜片， 且鸭嘴的 顶点处有可伸缩的开口或孔洞。
所述的双安全型留置针， 其特征在于鸭嘴单向阀的阀体外径和其所安装部 位的管体的内径相同， 安装时再以固化胶辅之固定， 从而使鸭嘴单向阀在管体 内的位置不易改变。
所述的双安全型留置针， 其特征在于鸭嘴单向阀可以装在软管座侧支内部， 还可以装在输液三通侧支即加药管口。
所述的双安全型留置针， 其特征在于 Y式三通装配了正压功能， 其结构包 括外壳、 底座、 活塞、 大密封圈、 小密封圈、 弹簧， 正压接头在无任何连接件 与之连接的情况下呈封闭状态， 保持无菌状态， 接头可以连接并锁住注射器、 输液器、 输液皿， 正压 Y式三通的原理在使用中产生正压功能， 在拔去外接的 注射器等物品的时候继续产生一个正压， 可以防止血液回流而堵塞留置针。 附图说明 图 1为本实用新型的结构示意图
图 2为本实用新型的结构剖视图
图 3为可伸縮保护套的实施保护状态图
图 4为鸭嘴单向阀在软管座侧支内的局部剖视图
图 5为鸭嘴单向阀在 Y式三通侧支内的局部剖视图
图 6为鸭嘴单向阀的示意图
图 7为正压接头的局部剖视图
具体实施方式
如图所示， 双安全型留置针， 包括护套 1、 留置软管 2、 铆钉 3、 留置软管 座 4、 钢针 5、 钢针座 6、 可伸縮保护套 7、 防溢塞 8、 连接管 9、 止流夹 10、 Y 式三通 11、 防菌帽 12、 鸭嘴单向阀 13 ; 可伸缩保护套 7包括前端连接部 7-1、 可伸缩主体管 7-2、 后端连接部 7-3， 其中三部分为一体化相连， 可伸缩保护套 7的后端连接部 7-3与钢针座 6粘接连为一体，前端连接部 7-1配备在留置软管 座 4内，将钢针 5包围在其内，钢针 5穿过前端连接部 7-1经防溢塞 8进入留置 软管 2留置在内部， 在完成穿刺后退出钢针 5， 可伸缩主体管 7-2被拉长， 将钢 针 5完全保护起来。
鸭嘴单向阀 13包括阀体 13-1、 鸭嘴 13-2， 且阀体 13-1和鸭嘴 13-2为一 体化连接，其阀体 13-1为圆柱形结构，鸭嘴 13-2形似圆锥形膜片，且鸭嘴 13-2 的顶点处有可伸縮的开口或孔洞， 鸭嘴单向阀 13可以装在留置软管座 4侧支内 部， 还可以装在 Y式三通 11侧支内部。
连接管 9一端与留置软管座 4相连通， 另一端连接 Y式三通 11， 止流夹 10 卡在连接管 9上， 可根据需要随时打开关闭液体。 Y式三通 11上的正压接头 11-1结构包括外壳 11-1-1、 底座 11-1-2、 活塞 11-1-3、 大密封圈 11-1-4、 小密封圈 11-1-5、 弹簧 11-1-6， 弹簧 11-1-6的一端装 入底座 11-1-2凸起的圆柱体上， 另一端套上活塞 11-1-3， 活塞 11-1-3上部的凹 处装上小密封圈 11-1-5， 下部的凹处装上大密封圈 11-1-4， 最后将外壳 11-1-1 安装在底座 11-1-2上。
正压接头在无任何连接件与之连接的情况下呈封闭状态， 保持无菌状态， 接头可以连接并锁住注射器、-输液器、 输液皿， 正压 Υ式三通的原理在使用中 产生正压功能， 在拔去外接的注射器等物品的时候继续产生一个正压， 可以防 止血液回流而堵塞留置针。 '
以上是本实用新型的较佳实施例， 凡依本实用新型技术方案所作的改变， 所产生的功能作用未超出本实用新型技术方案的范围时， 均属于本实用新型的 保护。

Claims

权 利 要 求 书
1. 双安全型留置针， 其主要包括护套、 留置软管、 铆钉、 留置软管座、 钢针、 钢针座、 可伸缩保护套、 防溢塞、 连接管、 止流夹、 Y式三通、 防菌帽、 鸭 嘴单向阀。
2. 根据权利要求 1所述的双安全型留置针， 其特征在于可伸缩保护套位于防溢 塞与针座之间的位置。
3. 根据权利要求 1所述的双安全型留置针， 其特征在于可伸缩保护套包括前端 连接部、 可伸缩主体 、 后端连接部， 其中三部分为 体化相连。 '
4. 根据权利要求 1所述的双安全型留置针， 其特征在于可伸缩保护套后端连接 部与针座粘接连为一体， 前端连接部配备在留置软管座内， 将钢针包围在其 内。
5. 根据权利要求 1所述的双安全型留置针， 其特征在于可伸缩保护套前端连接 部内部结构是一锥体形状， 锥体为中空设计， 钢针从椎体中穿入。
6. 根据权利要求 1所述的双安全型留置针， 其特征在于软管座侧支内底部装有 .. 鸭嘴单向阀， 鸭嘴单向阀再与输液导管相连接， 当液体通过输液导管流经鸭 嘴单向阀时， 由于液体的冲挤和正压的作用， 鸭嘴的阀门处于开放状态， 这 时能确保液体顺利的输注， 无液体流经鸭嘴单向阀时， 鸭嘴单向阀的阀门由 于弹性回缩力而处于关闭状态， 从而有效地防止了血液和液体的返流。
7. 根据权利要求 1所述的双安全型留置针， 其特征在于鸭嘴单向阀包括阀体、 鸭嘴， 且阀体和鸭嘴为一体化连接， 其阀体为圆柱形结构， 鸭嘴形似圆锥形 膜片， 且鸭嘴的顶点处有可伸缩的开口或孔洞。
8. 根据权利要求 1所述的双安全型留置针， 其特征在于鸭嘴单向阀的阀体外径 和其所安装部位的管体的内径相同， 安装时再以固化胶辅之固定， 从而使鸭 嘴单向阀在管体内的位置不易改变。
9. 根据权利要求 1所述的双安全型留置针， 其特征在于鸭嘴单向阀可以装在软 管座侧支内部， 还可以装在输液三通侧支即加药管口。
10.根据权利要求 1所述的双安全型留置针，其特征在于 Y式三通装配了正压功 能， 其结构包括外壳、 底座、 活塞、 大密封圈、 小密封圈、 弹簧， 正压接头 在无任何连接件与之连接的情况下呈封闭状态， 保持无菌状态， 接头可以连 接并锁住注射器、输液器、输液皿， 正压 Y式三通的原理在使用中产生正压 功能， 在拔去外接的注射器等物品的时候继续产生一个正压， 可以防止血液 回流而堵塞留置针。
PCT/CN2010/001779 2010-11-05 2010-11-05 双安全型留置针 WO2012058790A1 (zh)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN102836479A (zh) * 2012-09-13 2012-12-26 苏州林华医疗器械有限公司 安全型静脉留置针
CN108478899A (zh) * 2018-02-10 2018-09-04 陈伟权 可多次冲管的留置针

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CN101658700A (zh) * 2009-07-30 2010-03-03 陈永曦 具有保护套的开放式留置针
CN201469867U (zh) * 2009-07-30 2010-05-19 陈永曦 具有保护套的开放式留置针
CN201612944U (zh) * 2009-12-08 2010-10-27 上海锦泽夏本医疗器械有限公司 一种逆流防止阀以及采用该防止阀的留置针
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Publication number Priority date Publication date Assignee Title
JPH1071203A (ja) * 1996-06-24 1998-03-17 Tadao Kashima 留置針型点滴装置のインジェクションプラグの改良
US6044859A (en) * 1997-03-03 2000-04-04 Filtertek Inc Valve apparatus and method
CN2726611Y (zh) * 2004-09-27 2005-09-21 陈永曦 具有保护套的留置针
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CN201244280Y (zh) * 2008-08-28 2009-05-27 江西三鑫医疗器械集团有限公司 安全留置针
CN101658700A (zh) * 2009-07-30 2010-03-03 陈永曦 具有保护套的开放式留置针
CN201469867U (zh) * 2009-07-30 2010-05-19 陈永曦 具有保护套的开放式留置针
CN201612944U (zh) * 2009-12-08 2010-10-27 上海锦泽夏本医疗器械有限公司 一种逆流防止阀以及采用该防止阀的留置针
CN201880179U (zh) * 2010-09-05 2011-06-29 张国 双安全型留置针

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CN102836479A (zh) * 2012-09-13 2012-12-26 苏州林华医疗器械有限公司 安全型静脉留置针
CN108478899A (zh) * 2018-02-10 2018-09-04 陈伟权 可多次冲管的留置针

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