A needle device for a safety syringe

A safety syringe and needle technology, which is applied in the field of needle devices for safety syringes, can solve the problems of difficult separation of the needle and the needle cap, difficulty in achieving recovery, etc., and achieves the effect of realizing separate recycling, reasonable structural design, and convenient separate recycling.

Active Publication Date: 2022-07-08
李奇元
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the needle devices in existing safety syringes adopt a fixed structure, and it is difficult to separate the needle from the needle cap, and the needle that is difficult to recover does not have any plastic parts

Method used

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  • A needle device for a safety syringe
  • A needle device for a safety syringe
  • A needle device for a safety syringe

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Embodiment Construction

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] see Figures 1 to 4 , the present invention provides a technical solution: a needle device for a safety syringe, comprising a needle cap and a thin needle tube 1, the needle cap includes a cylindrical cap 3 at the upper end and a conical cap 2 at the lower end, and the cylindrical cap 3 and A transition step groove 4 is provided on the outer wall of the connection of the conical cylinder cap 2. When the needle cap and the need...

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PUM

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Abstract

The invention discloses a needle device for a safety syringe, comprising a needle cap and a thin needle tube. A plurality of sets of ratchets are distributed around the top side wall of the thin needle tube, and each set of ratchets includes at least two sets of pawls along the length of the thin needle tube. The ratchet claws are distributed in the directions. There are a plurality of ratchet claws corresponding to each group of ratchet claws around the inner wall of the inner hole of the needle cap. The ratchet block is clamped, and the outer wall of the top end of the thin tube of the needle is sealed with a sealing ring, and the outer circumferential wall of the sealing ring is sealed with the inner wall of the inner hole of the needle cap. The needle cap is truly separated and the needle can be recycled separately.

Description

technical field [0001] The invention relates to the technical field of medical injection instruments, in particular to a needle device for a safety syringe. Background technique [0002] A syringe is a common medical device. As early as the 15th century, the Italian Cartinel proposed the principle of the syringe. The main use of needles to extract or inject gas or liquid. Syringes can also be used in medical devices, containers, and scientific instruments such as some in chromatography to inject through rubber septa. [0003] The needles in the syringes are made of metal. About 4 billion needles are used in China every year. From the perspective of saving and resource reuse, the needles should be recycled and disposed of separately after use. However, most of the needle devices in the existing safety syringes adopt a fixed structure, and it is difficult to achieve true separation of the needle and the needle cap, and it is difficult to achieve that the recovered needle do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/32
Inventor 张艳霞
Owner 李奇元
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