Disposable needle for venous blood specimen collection (anti-reflux type)

Abstract

The invention relates to the field of medical appliances, in particular to a disposable venous blood sample collection needle (reflux prevention type). It includes a venipuncture needle with a needle handle, a hose and a needle seat; a one-way valve fixing seat is arranged in the cavity of the needle seat, and a latex one-way valve is assembled on the one-way valve fixing seat; the soft The tail end of the tube is inserted and assembled on the blood inlet of the one-way valve fixed seat; the outlet of the tail of the needle seat is inserted and equipped with a tube plug puncture needle for connecting the negative pressure blood collection container, and the tube plug puncture needle is covered Has a latex sheath. The present invention is provided with the needle seat with latex one-way valve inside, and in the process of human body vein blood collection, latex one-way valve is open state, and after blood collection is finished, negative pressure blood collection container is pulled out, and latex one-way valve closes immediately, thereby prevents negative pressure. The blood in the pressure blood collection container returns to the human body instantly, so that the negative pressure blood collection container is completely isolated from the human body, even if there are bacteria in the negative pressure blood collection container, it will not cause harm to the human body.

Description

technical field [0001] The invention relates to the field of medical appliances, in particular to a disposable venous blood sample collection needle (reflux prevention type). Background technique [0002] When blood is collected from the human vein, the blood in the blood collection container often flows back to the human body. Therefore, the production standard of the blood collection container is formulated in a sterile form. However, most of the negative pressure blood collection tubes are made of glass, and many reagents in the blood collection container are embodied in the form of live bacteria. As a result, it is very difficult to treat the whole blood collection container aseptically. Contents of the invention [0003] The object of the present invention is to provide a disposable venous blood sample collection needle (anti-backflow type) that can effectively prevent the blood from the blood collection container from flowing back into the human body during blood col...

AI Technical Summary

Problems solved by technology

However, most of the negative pressure blood collection tubes are made of glass, and many of the reagents in the blood collection container are embodied in the form of live bacteria. In this way, it is very difficult to treat the blood collection container as a whole aseptically.

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