A blood collection needle with visible blood return

Abstract

The invention relates to a blood collection needle for visible blood return, comprising a blood collection needle tube, a puncture needle and a needle seat, the needle seat includes a blood collection end and a puncture end, the blood collection needle tube is inserted in the blood collection end, the puncture needle is inserted in the puncture end, the needle There is a visible blood return cavity in the base, and the blood collection needle tube and the puncture needle are connected with the visible blood return cavity. The needle base includes a needle base body with a visible blood return cavity. The needle base body is integrally formed by the blood collection end and the puncture end. A demoulding window corresponding to the position of the visible blood return chamber is provided on the side wall of the main body of the needle holder. The visible blood return chamber penetrates through the side wall of the main body of the needle holder through the demoulding window, and a sealing cover is provided on the demoulding window. The invention has the advantages of saving materials, reducing costs and having a stable structure.

Description

technical field [0001] The invention relates to the technical field of medical devices, and specifically designs a blood collection needle, in particular a blood collection needle with visible blood return. Background technique [0002] The disposable blood collection needle is matched with the disposable human venous blood sample vacuum collection container. The disposable blood collection needle mainly includes a blood collection needle tube and a puncture needle, and the blood collection needle tube is connected with the puncture needle through a connecting part. The puncture needle penetrates into the vacuum collection container of human venous blood sample, so that the collection container communicates with the blood collection needle. The current blood collection needles are divided into soft connection type and hard connection type. In the hard connection type blood collection needle, the needle seat of the blood collection needle is directly connected with the needl...

AI Technical Summary

Problems solved by technology

However, the existing blood-returning blood collection needles have the following defects: the needle seat of the blood collection needle is formed by splitting the blood collection end and the puncture end to form two independent parts and then assembled. Ring seat, two outer ring seats increase the bonding area, and then bond them together through epoxy resin glue (as the Chinese patent number of Weihai Hongyu Medical Instrument Co., Ltd. is CN201220210072.5 "a kind of visible blood return blood collection needle", The authorized publication number is CN 202604841 U); there are also sockets for connection (for example, the Chinese patent number of Hebei Xinle Technology Co., Ltd. is 201120105709. , under this structure, the blood collection end and the puncture end need to be specially processed to form a connection structure that is easy to assemble, which increases the amount of materials. Although for a single blood collection needle, the material increase is not obvious, but the demand for blood collection needles is large. When mass production, the cost Obvious; and the reliability of the structure of the needle seat formed by assembly is low

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