WO2005102422A1 - Dispositif protecteur de securite, jetable, pour aiguilles medicales - Google Patents

Dispositif protecteur de securite, jetable, pour aiguilles medicales Download PDF

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Publication number
WO2005102422A1
WO2005102422A1 PCT/CN2005/000523 CN2005000523W WO2005102422A1 WO 2005102422 A1 WO2005102422 A1 WO 2005102422A1 CN 2005000523 W CN2005000523 W CN 2005000523W WO 2005102422 A1 WO2005102422 A1 WO 2005102422A1
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WO
WIPO (PCT)
Prior art keywords
needle
cover
wall
medical
seat
Prior art date
Application number
PCT/CN2005/000523
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English (en)
French (fr)
Inventor
Yitian Qian
Yimin Lu
Original Assignee
Yitian Qian
Yimin Lu
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 Yitian Qian, Yimin Lu filed Critical Yitian Qian
Publication of WO2005102422A1 publication Critical patent/WO2005102422A1/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
    • A61M5/178—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
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3216—Caps placed transversally onto the needle, e.g. pivotally attached to the needle base

Definitions

  • the invention relates to a medical needle with a needle seat in a medical device, such as an injection needle, an infusion, a blood drawing needle, a vein indwelling needle, a puncture needle, and the like, especially a safety protection device for a medical needle with a needle seat, which is only for one-time use. . Background technique
  • the disposable syringe Concentrated on the body of the device, such as self-destructive syringes, the disposable syringe should be used and the needle should not be reused, but the safety protection of the needle body is ignored;
  • the safety device needs to be assembled in the body of the syringe, so the production cost is high, and its practicality is also greatly limited. For example, because the needle body and the syringe cannot be separated, the syringe with such a device can only be used for injection. And it is not suitable for large-capacity syringes, and cannot complete the independent clinical application functions of the needle body and the syringe, and these design devices do not have the versatility of various medical needles.
  • 4,982,842 mainly solves the problem of single-handed operation and one-time locking.
  • the injection needle is still reusable, and it has no positioning function for the rotation of the needle body sheath, and cannot be applied to the requirements of the positioning of the sheath during the operation of various advanced medical needles, so it needs to be improved. Summary of the invention
  • the object of the present invention is to provide a safe operation guide for medical sharp instruments, which can be applied to a medical device with a needle seat.
  • the single-use safety protection device on the needle in addition to meeting low production costs and strong clinical practicability, can be widely used on medical needles with needle holders, effectively preventing the use of needle tips after use Infection caused by re-injury to others, and the effect of single use is guaranteed.
  • the disposable safety protection device for a medical needle of the present invention is composed of a needle seat and a buckle cap; it is characterized by a catheter in the center of the needle seat, the front end of which can be fixedly connected with various medical needles, and a central catheter
  • the periphery of the catheter can be partially or completely separated from the wall of the needle seat, and the part of the free catheter wall is thin and exposed.
  • the rear port of the catheter is open and can be connected with the mouth of various medical instruments.
  • the surface has a fixed seat which is connected to the rotating wheel and the rotating wheel shaft of the buckle cover.
  • the surfaces which are in contact with the rotating wheel and the rotating wheel shaft are complementary in shape, so that they can rotate in a relative ratchet shape.
  • the shape of the needle seat can be shaped according to the requirements of the use of medical needles;
  • the buckle cover is composed of an upper wall and two side walls, the bottom surface is open, the rear seat cover extends forward as a needle cover, and the rear part of the seat cover has a rotation wheel and a rotation
  • the wheel shaft, part of the side surface of the rotating wheel is fixedly connected to the upper wall of the seat cover or the push handle, and the other side surface of the rotating wheel may be irregularly rounded, so that it also assumes a ratchet shape when it contacts the outer surface of the needle seat wall.
  • the inner wall of the push handle While controlling the stay position of the entire buckle cover during relative rotation, has a pointed object protruding inward, which can take various shapes such as cone or wedge shape.
  • the buckle cover When the buckle cover covers the needle seat, it can Touch and pierce the catheter wall, the lower edge of the two side walls of the seat cover has internal protrusions. After the cover is closed and the needle seat is closed, the internal protrusion can fasten the wall of the needle seat.
  • the connected medical needle is long, and the front cavity of the needle cover has a needle-end fixing cavity surrounded by an elastic piece. The elasticity of the elastic piece and the elastic force generated when the needle body is bent make the front part of the needle body pressed when the button is pressed down Slide the needle into the needle-end fixing cavity, and be surrounded by the elastic sheet and cannot leave.
  • the buckle cover side wall protrudes tightly, and the front part of the needle is slid into the needle end fixing cavity by a unidirectional spring, and the catheter in the center of the needle seat is punctured
  • the permanent failure of the needle seat and even the entire medical needle not only achieves the purpose of protecting the needle tip, but also completely destroys the needle body, and has the effect of being used only once.
  • the invention is an innovative product with clinical practical value, which is designed based on the requirements of international medical sharp instruments for safe operation. It has the following advantages:
  • the present invention fully meets the requirements for safe operation of medical sharp instruments. If it can be operated with one hand, its buckle positioning device can prevent the needle cap from blocking the needle tip and the needle. Important marks on the body and connected instruments, and simple and reliable operation, while protecting the needle from being punctured, the needle seat can be ruptured and the entire medical needle is invalidated.
  • FIG. 1 is a schematic diagram of the three-dimensional structure of the present invention.
  • FIG. 2 is a schematic structural view of a needle seat according to the present invention.
  • FIG. 3 is a schematic top three-dimensional structure diagram of FIG. 2.
  • FIG. 4 is a schematic side structural view of a button cover of the present invention.
  • FIG. 5 is a schematic three-dimensional structure diagram of FIG. 4 from the bottom. detailed description
  • the disposable safety protection device for a medical needle of the present invention is composed of a needle holder 1 and a buckle cover 2, which is characterized in that as shown in FIGS. 2 and 3, a catheter 11 is provided in the center of the needle holder 1.
  • the front end can be fixedly connected to various types of medical needles 12, the periphery of the central catheter 11 can be partially or completely separated from the needle seat wall 13, and the partially free catheter wall 14 is thin and exposed.
  • the rear port 15 is open and can be connected with the crossings of various medical instruments.
  • the outer surface of the needle seat wall 13 is provided with a fixed seat 16 which is engaged with the rotation wheel 21 and the rotation wheel shaft 22 on the buckle cover 2 and is connected to the rotation wheel.
  • the buckle cover 2 is composed of an upper wall and two side walls, and the bottom surface is open.
  • the rear seat cover 2a extends forward to a needle cover 2b.
  • the rear part of the seat cover 2a has a rotating wheel 21 and a rotating shaft 22, and rotates.
  • the remaining side surface 24 may be irregularly rounded, so that it also assumes a ratchet shape when it is in contact with the outer surface of the needle seat wall 13 so as to control the stay position of the entire buckle cover 2 during relative rotation, and the inner wall of the pusher 23 is oriented.
  • the internally protruding spike 25 may be in the shape of a cone or a wedge.
  • the needle cover 2b forward of the seat cover 2a is longer than the medical needle 12 fixedly connected to the needle seat 1.
  • the needle cap 2b has a needle end surrounded by an elastic sheet 27 in the front cavity.
  • the cavity 28 relies on the elastic force of the elastic piece 27 and the elastic force generated when the needle body 12 is bent, so that the front portion of the needle body 12 slides into the needle end fixing cavity 28 when the buckle cover 2 is pressed down, and is surrounded by the elastic piece 27 and cannot be Leaving the fixed cavity 28. It can be seen that the needle holder 1 and the buckle cover 2 designed by the present invention can be applied to a medical needle with a needle holder.
  • the operator pushes the handle 23 with one hand, and the button cover 2 controlled by the rotating wheel 21 and the fixed seat 16 is pushed down to the final position, and the inner protrusion 26 of the lower edge of the seat cover 2a is fastened.
  • the needle seat wall 13 and the front of the medical needle 12 slide into the needle end fixing cavity 28 and cannot leave.
  • the spike 25 in the pusher 23 punctures the catheter wall 14 and the entire needle seat 1 is permanently destroyed. This causes the entire medical needle to fail, and while truly restricting one-time use, it also achieves the purpose of protecting the needle tip from safety.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (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)
  • Media Introduction/Drainage Providing Device (AREA)

Description

医用针一次性使用安全保护装置 技术领域
本发明涉及医疗器械中带有针座的医用针， 如注射针， 输液、 抽血针， 静脉留置针， 穿刺针等等， 尤指具针座医用针上仅限一次性使用的安全保护装置。 背景技术
随着对传染性病原体的逐渐了解， 广大医务工作者已认识到使用带有安全保护装置的 医用针， 对避免医治过程中意外刺伤而导致血源性病原体感染的必要性， 及仅限一次性使 用装置对防止交叉性感染的重要性。 近二年， 在国内外市场上诞生了许多设计迥异， 带有 自毁性使用装置或安全防护装置的注射器、 输液或抽血器等， 因这些设计装置注重整体自 毁的安全型效果而被集中在器械的体部， 如自毁性注射器， 应一次性使用的要求而注重针 筒的不可再用， 但忽视了针体的安全防护； 针体回缩型安全型自毁式注射器， 因其安全装 置需装配在针筒体内， 故生产成本高， 在实用性上也受到了极大的限制， 如因针体与针筒 不可分离， 使带这类装置的注射器仅能用作注射， 且不适用于大容量的注射器， 不能完成 针体、 针筒各自独立的临床应用功能， 且这些设计装置不具有各类医用针的通用性。 事实 上， 仅限一次性使用的注射针筒早在二十世纪八十年代末就以折断推柄的设计而存在， 因 它适合各类针筒且成本较低的缘故， 在临床上有较强的实用性， 因此， 发展与其相配的自 毁式安全型医用针， 应具相当重要的实用价值， 此外， 因这些医用针一般都具针座， 改进 其结构的合理性， 实用性， 在维持各类医用针特有功能的同时， 使其成为真正的一次性使 用安全型产品， 才是生产成本合理、 临床实用性强的理想发明设计。 在国外， 已有许多学 者研究过注射针的安全装置，最为成功的发明者是 Hollister, William H，他的《 Safety Needle Container》， 美国专利号 4,982,842， 主要解决了单手操作、一次性锁定用后针体、 及减少 药液死腔等问题， 但它仅是一种装配在注射针针座上的安全型配件， 它的用后针体锁定并 不代表毁坏， 恶意地打开其锁定装置， 其注射针仍可再用， 它对针体护套的转动也不具有 定位功能， 不能适用于目前各类先进医用针在操作时对护套定位的要求， 故有待改进。 发明内容
本发明的目的在于提供一种能符合医用尖锐器械安全操作指引， 应用在带有针座医用 针上的一次性使用的安全保护装置， 它除了需符合生产成本低、 具较强的临床实用性外， 更可被广泛地通用在带有针座的医用针上， 有效地防止用后针尖再伤他人而导致的感染， 并保证一次性使用的效果。
为达上述目的， 本发明的医用针一次性使用安全保护装置由针座、 扣盖组成； 其特点 是针座中央有一导液管， 前端可与各类医用针固定相接， 中部导液管的四周可部分或全部 与针座壁相离， 且部分游离的导液管壁薄、 暴露， 导液管的后端口开放， 可与各种医用器 械的道口相接， 在针座壁的外表面有与扣盖的转动轮及转动轮轴相嵌连接的固定座， 其与 转动轮及转动轮轴相嵌接触的表面因二者互补形态上的差异， 使二者可呈相对的棘轮状转 动， 针座的外形可根据医用针的使用要求呈相应形状； 扣盖由上壁及二侧壁组成， 底面开 放， 后部的座盖向前延伸为针盖， 座盖后部有转动轮及转动轮轴， 转动轮的部分侧表面与 座盖的上壁或推把固定相接， 转动轮其余的侧表面可呈不规则圆形， 使它在与针座壁外表 面相接触转动时也呈棘轮状， 从而控制整个扣盖在相对转动时的停留位置， 推把的内壁有 向内凸出的尖状物， 它可呈锥形或楔形等各种形态， 在扣盖盖合针座时， 它能触及并刺破 导液管壁， 座盖二侧壁的下缘有内突， 在扣盖盖合针座后， 内突能紧扣针座壁， 座盖前延 的针盖较针座固定相接的医用针为长， 针盖的前腔内有弹片围成的针端固定腔， 依靠弹片 自身的弹力及针体弯曲时产生的弹力使针体的前部在扣盖下压时单向弹滑入针端固定腔， 并被弹片包围而不能离开。当单手推动推把使扣盖盖合针座时，扣盖侧壁内突紧扣针座壁， 针前部被单向弹滑入针端固定腔， 针座中央的导液管被刺破， 使针座乃至整个医用针永久 失效， 既达到了安全防护针尖的目的， 又彻底破坏了针体， 起到仅限一次使用的效果。
本发明是以国际医用尖锐器械安全操作的要求为准则而设计的一种具有临床实用价 值的创新产品， 它有如下的优点-
1 - 本发明在改进原有针座设计的合理性， 实用性的同时， 完全符合医用尖锐器械的 安全操作要求， 如可单手操作， 其扣盖定位装置可使针盖不阻挡针尖、 针体及相连器械上 的重要标记， 且操作简单、 可靠， 在防护被针尖刺伤的同时， 可使针座破裂而使整个医用 针失效。
2. 临床实用性强， 它可被广泛地应用在各类具针座的医用针上、 广泛地应用在各种 粗细、 长短规格不同的针体上， 带有这种安全自毁装置的医用针， 更可与原有各种器械相 接使用， 在维持原有操作功能与手法的同时， 更能较其它安全型自毁性设计节省药液， 同 时也具针尖斜面指示、 易于握持等方便使用的特性。 3. 生产成本低， 整个设计除了改进原有针座的合理性外， 仅增加了扣盖这一部件， 使整体成本降至较低的水平。 附图说明
图 1为本发明的立体结构示意图。
图 2为本发明的针座侧视结构示意图。
图 3为图 2的俯视立体结构示意图。
图 4为本发明的扣盖侧视结构示意图。
图 5为图 4的仰视立体结构示意图。 具体实施方式
首先请参阅图 1所示， 本发明的医用针一次性使用安全保护装置由针座 1及扣盖 2组 成， 其特点在于： 结合图 2， 3所示， 针座 1中央有一导液管 11， 前端可与各类医用针 12 固定相接， 中部导液管 11的四周可部分或全部与针座壁 13相离， 且部分游离的导液管壁 14薄， 暴露， 导液管 11的后端口 15开放， 可与各种医用器械的道口相接， 在针座壁 13 的外表面有与扣盖 2上的转动轮 21及转动轮轴 22相嵌连接的固定座 16， 其与转动轮 21 及转动轮轴 22相嵌接触的表面因二者互补形态上的差异， 使二者可呈相对的棘轮状转动， 针座 1的外形可根据医用针的使用要求呈相应的形状； 再合图 4， 5所示， 扣盖 2由上壁 及二侧壁组成， 底面开放， 后部的座盖 2a向前延伸为针盖 2b， 座盖 2a后部有转动轮 21 及转动轮轴 22， 转动轮 21的部分侧表面与座盖 2a上壁或推把 23固定相接， 转动轮 21其 余的侧表面 24可呈不规则圆形， 使它在与针座壁 13外表面相接触转动时也呈棘轮状， 从 而控制整个扣盖 2在相对转动时的停留位置， 推把 23内壁有向内凸出的尖状物 25， 它可 呈锥形或楔形等形状， 在扣盖 2盖合针座 1时， 它能触及并刺破导液管壁 14， 座盖 2a二 侧壁的下缘有内突 26，在扣盖 2盖合针座 1后， 内突 26能紧扣针座壁 13，座盖 2a前延的 针盖 2b较针座 1固定相接的医用针 12为长， 针盖 2b的前腔内有弹片 27围成的针端固定 腔 28， 依靠弹片 27的弹力及针体 12弯曲时产生的弹力， 使针体 12的前部在扣盖 2下压 时单向弹滑入针端固定腔 28， 并被弹片 27包围而不能离开固定腔 28。 由此可见， 本发明 设计的针座 1及扣盖 2可适用于带有针座的医用针。 当医用针执行完功能后， 操作者单手 推动推把 23， 将由转动轮 21及固定座 16控制停留的扣盖 2被下压转动至终位， 座盖 2a 下缘的内突 26紧扣针座壁 13, 医用针 12的前部弹滑入针端固定腔 28而不能离开， 此时 推把 23内的尖状物 25刺破导液管壁 14，使整个针座 1被永久毁坏，致使整个医用针失效， 在真正限制一次性使用的同时， 也达到了针尖被安全防护的目的。
上述是本发明医用针一次性使用安全保护装置的设计大纲及操作原理， 凡与本发明的 目的、 构思及设计原理相类似的产品理应属于本发明的保护范围。

Claims

权利要求
1. 一种医用针一次性使用安全保护装置， 由针座及扣盖组成， 其特征在于- 针座中央有一导液管， 前端可与各类医用针固定相接， 中部四周可部分或全部与 针座壁相离， 部分游离的导液管壁薄、 暴露， 后端口开放可与各类医用器械的道口相 接， 针座壁外表面上有与扣盖的转动轮及转动轮轴相嵌连接的固定座；
扣盖由上壁及二侧壁组成， 底面开放， 后部座盖上壁或推把与转动轮的部分侧表 面固定相接， 推把内壁有向内凸起的尖状物， 二侧壁下缘有内突能紧扣针座壁， 前部 针盖的前腔内有弹片围成的单向进入的针端固定腔。
2. 根据权利要求 1 所述的医用针一次性使用安全保护装置， 其特征在于： 所述针座壁外 表面上的固定座， 其表面与相嵌接触的转动轮及转动轮轴的表面因互补形态上的差异， 使二者可呈相对的棘轮状转动。
3. 根据权利要求 1 所述的医用针一次性使用安全保护装置， 其特征在于： 所述的针座外 形， 可根据医用针的使用要求呈相应的形状。
4. 根据权利要求 1 所述的医用针一次性使用安全保护装置， 其特征在于： 所述的转动轮 侧表面， 除部分与上壁或推把固定相接外， 其余部分可呈不规则的圆形， 使它在与针 座壁外表面相接触转动时， 也可呈棘轮状， 从而控制整个扣盖在相对转动时的停留位 置。
5. 根据权利要求 1 所述的医用针一次性使用安全保护装置， 其特征在于： 所述推把内壁 的尖状物， 可呈锥形或楔形等形状， 在扣盖盖合针座时， 它能触及并刺破导液管壁。
6. 根据权利要求 1 所述的医用针一次性使用安全保护装置， 其特征在于： 所述的针盖较 针座固定相接的医用针为长。
7. 根据权利要求 1 所述的医用针一次性使用安全保护装置， 其特征在于： 所述的针座及 扣盖可适用于带有针座的医用针。
PCT/CN2005/000523 2004-04-20 2005-04-18 Dispositif protecteur de securite, jetable, pour aiguilles medicales WO2005102422A1 (fr)

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CN108221193A (zh) * 2018-03-22 2018-06-29 长沙学院 一种转动式多点张紧定位装置

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CN100368032C (zh) * 2005-06-28 2008-02-13 钱倚天 安全毁形医用针
US10639430B2 (en) * 2010-11-22 2020-05-05 B. Braun Melsungen Ag Hinged shield assemblies and related methods
CN103908267A (zh) * 2014-03-26 2014-07-09 温州市贝普科技有限公司 一种安全采血针
CN104399157A (zh) * 2014-10-14 2015-03-11 汪贤宗 一种通用安全护套
CN105413016B (zh) * 2015-12-23 2018-08-28 中国人民解放军第三军医大学第一附属医院 一次性防回套刺伤型无菌注射针

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CN108221193B (zh) * 2018-03-22 2024-04-19 长沙学院 一种转动式多点张紧定位装置

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