WO2014201709A1 - 一种安全静脉输液留置针组件 - Google Patents

一种安全静脉输液留置针组件 Download PDF

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Publication number
WO2014201709A1
WO2014201709A1 PCT/CN2013/077952 CN2013077952W WO2014201709A1 WO 2014201709 A1 WO2014201709 A1 WO 2014201709A1 CN 2013077952 W CN2013077952 W CN 2013077952W WO 2014201709 A1 WO2014201709 A1 WO 2014201709A1
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WO
WIPO (PCT)
Prior art keywords
needle
assembly
puncture
catheter
indwelling
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Application number
PCT/CN2013/077952
Other languages
English (en)
French (fr)
Inventor
张谦
陈洪
Original Assignee
浙江康德莱医疗器械股份有限公司
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Application filed by 浙江康德莱医疗器械股份有限公司 filed Critical 浙江康德莱医疗器械股份有限公司
Publication of WO2014201709A1 publication Critical patent/WO2014201709A1/zh

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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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle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
    • A61M5/14—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
    • 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
    • A61M2005/1583—Needle extractors
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters

Definitions

  • the present invention relates to an intravenous infusion needle assembly, and more particularly to a safe intravenous infusion needle assembly.
  • the indwelling needle is an infusion device that replaces the traditional one-time infusion needle, so as to reduce the pain of repeated puncture of the patient and reduce the workload of the medical staff, and has been widely used in clinical practice.
  • the structure generally includes a piercing assembly consisting of a needle hub and a puncture needle, a rubber stopper, a catheter hub, and an indwelling catheter.
  • the indwelling catheter is disposed at the front end of the catheter seat, and the side of the catheter seat is provided Puncture needle blade,
  • the indwelling catheter axially penetrates the needle passage that constitutes the movement of the needle, the rubber plug is fixedly disposed in the catheter hub, and the puncture needle in the puncture assembly is inserted through the rubber plug into the indwelling catheter.
  • the indwelling catheter is guided through the puncture needle to puncture the vein, and then the puncture assembly is pulled out, and thereafter the indwelling catheter is used to perform continuous arteriovenous infusion of the drug to the patient.
  • the existing A safety protective cover is attached to the intravenous infusion needle.
  • the safe intravenous infusion needle assembly protects the used indwelling needle.
  • the existing safety cover is usually a round tubular member with a length longer than
  • the puncture assembly, the inner hole and the needle tube seat are matched with each other, and the inner cavity of the safety protection sleeve constitutes the puncture assembly receiving cavity, and the wall of one end of the safety protection sleeve is provided with a wedge-shaped cutout, which is safe
  • the opposite end of the opposite end of the protective sleeve is provided with a locking groove formed by a window having a square shape with a retracting structure, and a guiding channel connection formed by an axial slit between the locking groove and the wedge-shaped slit is provided for the safety protection sleeve.
  • the three-way catheter seat is detachably connected, and the puncture needle fin on the needle tube seat is exposed outside the wall of the safety protection sleeve through the guiding groove.
  • the hand pinch needle is pulled along the guiding channel and then pulled to the locking groove. Puncture needle flap Jamming, the needle holder and the puncture needle are both hidden into the inner cavity of the safety cover, that is, the puncture assembly receiving cavity, thereby preventing the needle from stabbing the person.
  • a safe intravenous infusion needle assembly including a needle cannula sheath, an indwelling needle assembly, a tubular safety sheath body and a piercing assembly, the piercing assembly comprising a needle hub and a puncture needle, the indwelling needle assembly comprising a catheter hub and an indwelling catheter, the indwelling catheter is disposed at a front end of the catheter hub, and a side of the catheter hub is provided with a puncture needle fin, the sheath body having a length longer than the puncture assembly, the needle sheath being detachably connected to the catheter hub
  • the puncturing component is axially slidably disposed in the body cavity of the protective sleeve, and the puncturing component has a standby state at the front end of the inner cavity and a inner end of the inner cavity in the inner body cavity of the protective cover body.
  • the safe intravenous infusion needle assembly is further provided with an elastic return mechanism or a latching mechanism and a push-type trip mechanism, the elastic reset mechanism causing the piercing assembly to push the piercing assembly in a standby state
  • the elastic force of the inner end of the inner chamber locks the piercing assembly in a standby state
  • the push-type trip mechanism is used to unlock the latch mechanism.
  • the present invention is set up The elastic reset mechanism, the locking mechanism and the push-type tripping mechanism, after completing the puncture action, only one-handed pressing the push-type trip mechanism to unlock the locking mechanism, and the elastic reset mechanism pushes the puncture assembly into the inner cavity Captain Both the needle holder and the puncture needle are hidden in it, thereby preventing the needle from stabbing the person and causing cross infection, and the operation is very convenient.
  • FIG. 1 is a schematic structural view of a specific embodiment of the present invention.
  • Figure 2 is a schematic view showing the structure of the needle tube sheath after the embodiment of the present invention is opened;
  • FIG. 3 is a schematic exploded view of a specific embodiment of the present invention.
  • Figure 4 is a cross-sectional view showing the internal structure of a specific embodiment of the present invention in a standby state
  • Figure 5 is a cross-sectional view showing the internal structure of the embodiment of the present invention.
  • the safe intravenous infusion needle assembly includes a needle cannula 1 and an indwelling needle assembly 3 a tubular safety sheath body 2 and a piercing assembly 4, the piercing assembly 4 including a needle hub 402 and a puncture needle 401, and the puncture needle 401 is fixed to the needle hub 402
  • the indwelling needle assembly 3 includes a catheter hub 302 and an indwelling catheter 301.
  • the indwelling catheter 301 is fixedly disposed on the front end of the catheter hub 302, and is disposed on the side of the catheter hub 302.
  • the puncture needle tab 303 can be one or both sides.
  • the protective cover body 2 has a round tubular shape and a length longer than the puncture assembly 4 to ensure that the puncture assembly 4 can be completely hidden inside.
  • the needle cannula 1 is engaged with the catheter hub 302.
  • the needle cannula 1 is detachably connected to the catheter hub 302.
  • the needle cannula 402 can be cylindrical or slightly tapered at the front end.
  • the diameter of the sleeve is matched with the inner diameter of the safety sleeve body 2, and the piercing assembly 4 is axially slidably disposed in the inner cavity of the sleeve body 2, and the piercing assembly 4 is in the sleeve body.
  • the inner cavity has a standby state at the front end of the inner cavity and a post-use state at the inner end of the inner cavity, and the safety intravenous infusion retention needle assembly 3 is further provided with an elastic return mechanism or a locking mechanism and a push-type tripping mechanism.
  • a compression spring 5 is disposed on the needle hub 402, and a rear end surface of the needle hub 402 is provided with a shoulder step, and a rear end of the compression spring 5 abuts against the shoulder step, and is compressed.
  • the front end abuts against the inner wall of the front end of the protective cover body, so that the piercing assembly 4 has an elastic force for pushing the piercing assembly 4 toward the inner end of the inner cavity in a standby state, thereby constituting the elastic reset mechanism, as shown in FIG.
  • the protective cover body 2 is provided with a guiding chute 201 in the axial direction, and the needle cannula 402
  • the outer wall is provided with a radial protrusion 4021.
  • the protrusion 4021 is gap-fitted in the guiding chute 201 and the end is exposed outside the protective cover body 2, and the protective cover body 2
  • a rocker member is disposed on the outer wall in the axial direction, preferably adjacent to the front end, corresponding to the position of the needle base 402 in the standby state, the rocker member 6 facing the rear end of the protective sleeve body 2 and the projection 4021
  • there is a hook 601 matched with the bump 4021 the hook 601 faces the wall of the protective cover body 2, and the hook 601 hooks the bump 4021 to block the piercing assembly 4
  • the inner end of the inner cavity of the protective cover body 2 constitutes the locking mechanism, and the other end of the rocker member 6 is an unlocking end 602, an unlocking end 602 and a protective sle
  • the safe intravenous infusion needle assembly is not only convenient to use, but also because the puncture assembly 4 is slid toward the inner end of the body cavity of the protective sleeve, The puncture needle 401 is also in the compression spring 5 and is never exposed from the guide chute 201 on the cover body 2, so that it is safer.
  • the locking mechanism is not unique, and there may be other ways, such as: in the needle holder 402 A radial spring cavity is arranged on the coil spring cavity, and a coil spring and a column unlocking button are sequentially arranged in the radial spring cavity, and the outer wall of the protective sleeve is in use in a standby state.
  • a button hole is disposed at a position corresponding to the radial spring cavity, the end of the unlocking button is exposed from the button hole, and the exposed portion of the unlocking button is inclined toward the end of the protective cover body.
  • the locking mechanism When the puncture action is completed, the unlock button is only required to be pressed by one hand, and the unlock button is pressed against the radial spring cavity, and when the bevel portion is pressed into contact with the button hole, the compression spring is applied to the pin holder 402. The elastic force of the 5 and the effect of the bevel, the unlocking button is further retracted into the radial spring cavity to unlock, and the piercing assembly 4 can be slid to the inner end of the body of the protective cover to be protected.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Biophysics (AREA)
  • Vascular Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

一种安全静脉输液留置针组件，设置了弹性复位机构（5）及锁扣机构（601，4021）及按压式脱扣机构（602），当完成穿刺动作后，只需单手按压按压式脱扣机构（602）将所述锁扣机构（601，4021）解锁，弹性复位机构（5）就会将穿刺组件（4）推向内腔中将针管座（402）和穿刺针头（401）均藏于其中，从而防止针头（401）刺伤人造成交叉感染，操作非常方便。

Description

一种安全静脉输液留置针组件 技术领域
本发明涉及一种 静脉输液留置针 组件，具体是 一种安全静脉输液留置针 组件 。
背景技术
留置针是替代传统的一次性输液针的输液器械，以减少患者重复穿刺的痛苦和减轻医务人员的护理工作量，现已在临床上广泛应用。其结构一般包括由针管座和穿刺针头组成的穿刺组件、胶塞、导管座以及留置导管。其中，留置导管设置在导管座前端，导管座侧面上设有 穿刺针翼片 ， 留置导管轴向贯通构成针头活动的的针头通道，胶塞固定设置在导管座中，穿刺组件中的穿刺针头穿过胶塞插入留置导管中。使用时通过穿刺针头引导留置导管刺入静脉，随后拔出穿刺组件，此后利用留置导管向患者进行持续的动静脉输注药液。由于穿刺组件是一次性使用的，为了避免在进行垃圾处理或回收处理过程中针头刺伤人，导致二次交叉感染，现有的 静脉输液留置针 上都会附上 安全 保护套组成 安全静脉输液留置针 组件对使用过的 留置针 进行保护。现有的 安全 保护套通常为一种圆管状构件，长度长于 穿刺组件 ，内孔与 针管座间隙配合 ， 安全 保护套的内腔构成 穿刺组件容纳腔 ， 安全 保护套一端的管壁上设有楔形切口， 安全 保护套相对的另一端附近设有由接近方形的、带有止退结构的窗口构成的锁槽，锁槽与楔形切口之间设有轴向切缝构成的引导槽道连接， 安全 保护套设有楔形切口的一端与 三通导管座可拆卸连接，针管座上的 穿刺针翼片 穿过引导槽道露在 安全 保护套管壁外，当完成穿刺时，手捏 穿刺针翼片 顺引导槽道后拉至锁槽将 穿刺针翼片 卡住，使 针管座和穿刺针头均藏至 安全 保护套的内腔即 穿刺组件容纳腔中，从而防止针头刺伤人。现有的 安全 保护套由于结构所限，仍存在以下缺陷： 1 、当完成穿刺时，要一手拿住 安全 保护套，另一只手捏住 穿刺针翼片 顺引导槽道后拉至锁槽将 穿刺针翼片 卡住，使 针管座和穿刺针头均藏至 安全 保护套的内腔即 穿刺组件容纳腔中，因此需要两只手操作，比较繁琐，操作不便； 2 、 由于楔形切口及引导槽道的存在 ，穿刺针头仍有可能从 引导槽道的缝隙中露出。
技术问题
本发明的目的在于为了克服现有技术的不足而提供一种操作方便 的缝隙中露出的 安全静脉输液留置针 组件 。
技术解决方案
为了实现上述目的，本发明采用的技术方案是： 一种安全静脉输液留置针 组件 ，包括 针管护套、留置针组件、管状安全保护套本体和 穿刺组件 ，所述 穿刺组件 包括 针管座和穿刺针头 ，留置针组件包括 导管座和留置导管，留置导管设置在导管座前端，导管座侧面上设有 穿刺针翼片 ，保护套本体长度长于 穿刺组件 ，所述针管护套与 导管座可拆卸连接 ，其特征在于：所述 穿刺组件可轴向滑动地设置于 保护套本体内腔中，所述 穿刺组件 在保护套本体内腔中具有处于内腔前端的待用状态和处于内腔内端的用后状态 ，所述 安全静脉输液留置针 组件还设有弹性复位机构或锁扣机构及按压式脱扣机构 ，所述 弹性复位机构使所述 穿刺组件 在待用状态下具有将 穿刺组件推向 内腔内端的弹性力，所述锁扣机构将所述 穿刺组件锁定在 待用状态，所述按压式脱扣机构用于解锁所述锁扣机构。
有益效果
与现有技术相比较， 本发明由于设置了 弹性复位机构及锁扣机构及按压式脱扣机构，当完成穿刺动作后，只需单手按压按压式脱扣机构将所述锁扣机构解锁，弹性复位机构就会将 穿刺组件推向 内腔中将 针管座和穿刺针头均藏于其中，从而防止针头刺伤人造成交叉感染， 操作非常方便 。
下面 将 结合附图 及具体实施例 对本发明作进一步描述 。
 附图说明
附图1为本发明具体实施例结构示意图；
附图2为本发明具体实施例打开 针管护套后的 结构示意图；
附图3为本发明具体实施例分解结构示意图；
附图4为本发明具体实施例待用状态内部结构剖视图；
附图5为本发明具体实施例 用后状态 内部结构剖视图。
 本发明的最佳实施方式
如图 1-3 所示， 安全静脉输液留置针 组件 包括 针管护套 1 、留置针组件 3 、管状安全保护套本体 2 和 穿刺组件 4 ，所述 穿刺组件 4 包括 针管座 402 和穿刺针头 401 ， 穿刺针头 401 固定在针管座 402 前端上， 留置针组件 3 包括 导管座 302 和留置导管 301 ，留置导管 301 固定设置在导管座 302 前端上，导管座 302 侧面上设有 穿刺针翼片 303 ，可以是一侧或两侧。本具体实施例中保护套本体 2 为圆管状，长度长于 穿刺组件 4 ，以保证能够将 穿刺组件 4 完全藏于内部。 所述针管护套 1 与 导管座 302 卡接 ，所述针管护套 1 与 导管座 302 可拆卸连接 ， 针管座 402 可以是圆柱形或前端略小的圆锥台形，针管座 402 的直径与 安全保护套本体 2 内孔直径间隙配合 ， 所述 穿刺组件 4 可轴向滑动地设置于 保护套本体 2 内腔中，所述 穿刺组件 4 在保护套本体 2 内腔中具有处于内腔前端的待用状态和处于内腔内端的用后状态 ， 安全静脉输液留置针组件 3 还设有弹性复位机构或锁扣机构及按压式脱扣机构 ，本具体实施例中，在 所述 针管座 402 上套设有压缩弹簧 5 ， 所述 针管座 402 后端表面设有肩阶，所述压缩弹簧 5 后端抵在所述肩阶上，压缩弹簧 5 前端抵在 保护套本体前端的内壁上使所述 穿刺组件 4 在待用状态下具有将 穿刺组件 4 推向 内腔内端的弹性力，由此构成所述弹性复位机构，如图 4 所示；当然，还可以在保护套本体内腔的内端设置一条拉簧，拉簧的一端连接在所述 针管座 402 上，另一端连接在 保护套本体内腔的内端构成所述弹性复位机构，但是本结构会导致保护套本体长度加长。所述保护套本体 2 沿轴向设有导向滑槽 201 ，所述 针管座 402 外壁上设有径向凸块 4021 ，所述凸块 4021 间隙配合在 导向滑槽 201 中且端部露在保护套本体 2 外，所述保护套本体 2 外壁上沿轴向设有翘板件，最好靠近前端，与待用状态下 针管座 402 的位置相对应 ，所述翘板件 6 朝向保护套本体 2 后端的一端上与 所述凸块 4021 位置相对应处设有与凸块 4021 相配的挂钩 601 ，挂钩 601 朝向 保护套本体 2 管壁 ，所述挂钩 601 勾住凸块 4021 阻止穿刺组件 4 滑向 保护套本体 2 内腔的内端 构成 所述锁扣机构 ， 所述翘板件 6 另一端为解锁端 602 ，解锁端 602 与保护套本体 2 管壁之间需留有按压的间隙，从而构成所述按压式脱扣机构，在按下解锁端 602 时，另一端上翘， 挂钩 601 脱离凸块 4021 ， 穿刺组件 4 可以滑向 保护套本体 2 内腔的内端而得到保护，如图 5 所示。本 安全静脉输液留置针组件 不仅使用方便，而且由于 穿刺组件 4 在滑向 保护套本体内腔的内端后，同时 穿刺针头 401 还处于压缩弹簧 5 中 ，绝对不可能从保护套本体 2 上的导向滑槽 201 中露出，因此安全性更高。为了防止出现由于误碰解锁端 602 而导致未使用过的 穿刺组件 4 滑向 保护套本体 2 内腔内，所述解锁端 602 靠近针管护套 1 ，所述针管护套 1 朝向解锁端 602 一侧设有延伸至解锁端 602 的按压下方的挡块 101 。当然，锁扣机构也不是唯一的，也还可以有其他方式，如：在所述 针管座 402 上设有径向弹簧容腔，所述径向弹簧容腔中依次设有螺旋弹簧和柱状解锁按钮， 待用状态下，保护套本体外壁上与 径向弹簧容腔对应的位置设有按钮孔，所述解锁按钮端部从按钮孔中穿出外露，所述解锁按钮外露部分朝向 保护套本体末端一侧为斜面设置 构成 所述锁扣机构。当完成穿刺动作后，只需单手按压 解锁按钮，解锁按钮被压向径向弹簧容腔，当压至 斜面部分与 按钮孔中接触时，由于 所述 针管座 402 上压缩弹簧 5 的弹力和 斜面的作用， 解锁按钮会进一步被退向径向弹簧容腔中从而解锁，穿刺组件 4 可以滑向 保护套本体内腔的内端而得到保护。

Claims (3)

  1. 一种安全静脉输液留置针组件，包括针管护套、留置针组件、管状安全保护套本体和穿刺组件，所述穿刺组件包括针管座和穿刺针头，留置针组件包括导管座和留置导管，留置导管设置在导管座前端，导管座侧面上设有穿刺针翼片，保护套本体长度长于穿刺组件，所述针管护套与导管座可拆卸连接，其特征在于：所述穿刺组件可轴向滑动地设置于保护套本体内腔中，所述穿刺组件在保护套本体内腔中具有处于内腔前端的待用状态和处于内腔内端的用后状态，所述安全静脉输液留置针组件还设有弹性复位机构或锁扣机构及按压式脱扣机构，所述弹性复位机构使所述穿刺组件在待用状态下具有将穿刺组件推向内腔内端的弹性力，所述锁扣机构将所述穿刺组件锁定在待用状态，所述按压式脱扣机构用于解锁所述锁扣机构。
  2. 根据权利要求1所述的安全静脉输液留置针组件，其特征在于：所述针管座上套设有压缩弹簧，所述针管座后端表面设有肩阶，所述压缩弹簧后端抵在所述肩阶上，压缩弹簧前端抵在保护套本体前端的内壁上构成所述弹性复位机构；所述保护套本体沿轴向设有导向滑槽，所述针管座外壁上设有凸块，所述凸块间隙配合在导向滑槽中且端部露在保护套本体外，所述保护套本体外壁上沿轴向设有翘板件，待用状态下，所述翘板件朝向保护套本体后端的一端上与所述凸块位置相对应处设有与凸块相配的挂钩构成所述锁扣机构，所述翘板件另一端为解锁端构成所述按压式脱扣机构。
  3. 根据权利要求1所述的安全静脉输液留置针组件，其特征在于：所述针管护套与导管座卡接，所述解锁端靠近针管护套，所述针管护套朝向解锁端一侧设有延伸至解锁端的按压下方的挡块。
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