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A self-filtering syringe

An automatic filter and syringe technology, applied in the field of syringes, can solve the problems of bacteria or virus pollution, inconvenient clinical operation, etc., and achieve the effect of low cost, avoiding bacteria and virus pollution, and simple overall structure

Active Publication Date: 2015-12-02
SHANDONG WEIGAO GROUP MEDICAL POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the liquid inlet channel and the liquid outlet channel of the injection needle are the same channel, the injection needle needs to be replaced again after filtration, but there is a risk of contamination by bacteria or viruses during the replacement process of the filter needle and the injection needle, and the clinical operation is also inconvenient

Method used

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  • A self-filtering syringe
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Experimental program
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Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] From Figure 1-Figure 4 It can be seen from the figure that an automatic filter syringe includes a syringe 1 and an injection needle 3, the injection needle 3 is composed of a needle tube 4 and a needle seat 5, the needle tube 4 is installed at the front end of the upper needle seat 6, and the rear of the lower needle seat 7 The end is connected to the cone head 2 of the syringe 1, the front end of the lower needle seat 7 is combined with the upper needle seat 6 to form a suction inlet 8 and an injection outlet 9, and a check valve 10 is installed on the lower needle seat 7, and the check valve 10 is in the The suction direction of the suction inlet and the injection direction of the injection outlet are opened, and a filter is installed on the suction inlet 8 .

[0017] Such as figure 2 , image 3 and Figure 4 As shown, the middle part of the upper end of...

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Abstract

The invention discloses an automatic filtration injector, which comprises an injector and a filtration injection needle, wherein the injection needle consists of a needle tube and needle holders; the needle tube is arranged at the front end of an upper needle holder; the back end of a lower needle holder is connected to the taper head of the injector; the front end of the lower needle seat is combined with the upper needle seat, so that a liquid suction inlet and an injection outlet are formed; a check valve is arranged on the lower needle holder, and is opened in the liquid suction direction of the liquid suction inlet and the injection direction of the injection outlet; and a filter is arranged at the liquid suction inlet. Filtration and injection processes are carried out automatically without replacing a needle head. The injector is simple in overall structure, convenient to operate, safe, reliable, low in cost and disposable, and the content of medicament impurities and the risk of cross infection can be lowered effectively.

Description

technical field [0001] The present invention relates to a syringe, in particular to an automatic filter syringe. Background technique [0002] As we all know, most of the injections currently used clinically are packaged in glass bottles. When the needle of the syringe is used to pierce the rubber stopper or cut the glass bottle with a grinding wheel to extract the medicinal solution, the bottle stopper chips or glass powder will enter the injection solution. Traditional syringes do not have a filter function. When liquid medicine is drawn, these impurities will be drawn into the syringe and injected directly into the patient, thereby inducing diseases such as venous inflammation. Chinese invention patent application CN102600535A discloses an injection needle with a precision filter, including a needle tube and a needle seat with an inner through hole, and the inner through hole of the needle seat includes an upper part with a smaller aperture, a lower part with a larger ape...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/178A61M5/31
CPCA61M5/3145A61M5/3148A61M2005/3128
Inventor 夏欣瑞李君丛日楠赵素霞姜丽敏王志范
Owner SHANDONG WEIGAO GROUP MEDICAL POLYMER
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