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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: 2022-07-15
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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Embodiment Construction

[0053] The technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals refer to the same or similar parts. 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, and should not be construed as a limitation of the present invention.

[0054] First, 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 some features or components in the accompanying drawings are not shown in detail for the sake of clarity. As shown, the disposable injection needle according to the embodiment of the present invention includes:

[0055] Needle seat 20, such as Figures...

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Abstract

The invention relates to an injection needle, comprising: a needle seat with a cannula; a first sheath, one end of which is connected to one end of the needle seat to form an accommodation space between the first sheath and the needle seat, and the other end of which has a first opening a second sheath, one end of which is located in the accommodating space, the other end of which has a second opening, and a part of the second sheath is axially slidable in the accommodating space, and the needle is adapted to be exposed through the second opening; a spring, The second sheath is adapted to provide an elastic force for axially moving the second sheath toward the outside of the accommodating space, and the second sheath is adapted to be retracted into the accommodating space against the elastic force of the spring based on the external force to expose the cannula. The other end of the first sheath is provided with a positioning member extending toward 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 The matching prevents the second sheath from rotating relative to the first sheath; and based on the movement of the second sheath toward the accommodating space, the positioning groove and the positioning member can be disengaged.

Description

technical field [0001] Embodiments of the present invention relate to the field of medical devices, and in particular, to an injection needle. Background technique [0002] At present, the common injection needles in the market that cooperate with insulin injection pens include large sheath, small sheath, needle holder, tube needle, and dialysis paper. After removing the large sheath and small sheath, the needle tip of the tube is always exposed. If the patient uses it for a second time, it will increase the chance of infection, 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 being circumferentially rotated to a circumferential direction that helps to prevent the inward axial movement of the small sheath returning to the axially extended position Location. However, in this solution, since one end of the small sheat...

Claims

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Application Information

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