Blood drawing needle

Abstract

The invention discloses a blood drawing needle. The blood drawing needle comprises a push rod, a puncture needle, a blood collection needle, a blood collection needle barrel, a piston and a vacuum blood collection tube. The front end of the blood collection needle barrel has a needle guiding tube; and the needle guiding tube has a needle hole. A piston retaining ring is connected to an central inner wall of the blood collection needle barrel; the piston is arranged in the blood collection needle barrel on the front of the piston retaining ring; a needle seat is arranged on the front side of the piston; and the front end of the needle seat is connected to the blood collection needle. The blood drawing needle is safe and clean and can improve the use safety; the front end of the blood collection needle protrudes out of the needle guiding tube, the blood collection needle penetrates a venous blood vessel of a physical examination student, the puncture needle can penetrate a needle point protective sleeve and a rubber tube cap and enters the vacuum blood collection tube; under the influence of negative pressure inside the vacuum blood collection tube, the blood in the venous blood vessel of the student flows into the vacuum blood collection tube, blood collection is completed, a push handle is released, the vacuum blood collection tube and the puncture needle are automatically detached, and the blood collection needle is automatically pulled out from the venous blood vessel of the student, and the convenience of blood collection operation of the student is enhanced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a blood-drawing needle. Background technique [0002] In the physical examination organized by the school, blood collection is an indispensable testing item. At present, the blood collection device for collecting blood samples is usually composed of blood collection needles, hoses, vacuum blood collection test tubes and other parts. Convenient, easy to slip or lose, the blood collection needle protection device is easy to cause stab wounds, and the blood collection needle is easily contaminated during the blood collection process, resulting in reduced blood collection safety. The puncture needle at one end is connected, the blood collection process is cumbersome to operate, and multiple parts are set independently, which increases the workload of medical staff. After the blood collection is completed, the blood collection needle needs to be manually pulled out from the st...

AI Technical Summary

Problems solved by technology

[0002] In the physical examination organized by the school, blood collection is an indispensable testing item. At present, the blood collection device for collecting blood samples is usually composed of blood collection needles, hoses, vacuum blood collection test tubes and other parts. Convenient, easy to slip or lose, the blood collection needle protection device is easy to cause stab wounds, and the blood collection needle is easily contaminated during the blood collection process, resulting in reduced blood collection safe

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