Injection needle

A technology of injection needles and needle holders, which is applied in the field of injection needles and can solve problems such as the failure of injection needles

Active Publication Date: 2020-06-02
TIANJIN HUAHONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this solution, since one end of the small sheath is located outside the large sheath, there is a possibility that the small sheath is rotated due to misoperation before the injection needle is used, causing the injection needle to fail

Method used

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  • Injection needle
  • Injection needle
  • Injection needle

Examples

Experimental program
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Embodiment Construction

[0053] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

[0054] Firstly, the disposable injection needle according to the exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that, for clarity, some features or components are not specifically shown in the accompanying drawings. As shown in the figure, a disposable injection needle according to an embodiment of the present invention includes:

[0055] Seat 20, such ...

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PUM

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Abstract

The invention relates to an injection needle. The injection needle includes a needle seat having a tubular needle, a first sheath, a second sheath and a spring; one end of the first sheath is connected to one end of the needle seat to form an accommodating space between the first sheath and the needle seat, and the other end is provided with a first opening; one end of the second sheath is locatedin the accommodating space, the other end is provided with a second opening, a part of the second sheath is axially slidably located in the accommodating space, and the tubular needle is adapted to be exposed through the second opening; the spring is adapted to provide elastic force that causes the second sheath to move axially towards the outside of the accommodating space, and the second sheathis adapted to overcome elastic force of the spring based on external force to retract into the accommodating space to expose the tubular needle; the other end of the first sheath is provided with a positioning member extending towards one end of the first sheath, the other end of the second sheath is provided with a positioning groove, and at the installation positions of the first and second sheaths, the positioning groove and the positioning member cooperate to prevent the second sheath from rotating relative to the first sheath; and based on the movement of the second sheath towards the accommodating space, the positioning groove and the positioning member can be disengaged.

Description

technical field [0001] The embodiments of the present invention relate to the field of medical devices, in particular to an injection needle. Background technique [0002] Common injection needles for insulin injection pens currently on the market include large sheaths, small sheaths, needle holders, tube needles, and dialysis paper. After removing the large sheath and small sheath, the needle tip of the tube needle is always exposed. Some If the patient uses it for the second time, the risk of infection will increase, or the needle after use may accidentally injure others and cause cross-infection. [0003] In addition, it has been proposed that during the pressing of the small sheath, the small sheath moves axially while rotating circumferentially to help prevent the small sheath from returning to the axially extended position from moving axially inward. Location. However, in this solution, since one end of the small sheath is located outside the large sheath, there is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/32
CPCA61M5/32
Inventor 张立波
Owner TIANJIN HUAHONG TECH
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