Indwelling needle and assembling process thereof

Abstract

The invention discloses an indwelling needle and an assembling process thereof. The indwelling needle comprises a catheter assembly, a needle tube assembly and a hose assembly; the needle tube assembly comprises a needle handle connected with the catheter assembly and a needle tube arranged in the needle handle; the needle handle comprises a handle column and a handle arranged on the side wall ofthe handle column; a through hole is formed in the end, connected with the catheter assembly, of the handle column, and a dispensing groove communicating with the through hole is formed in the other end of the handle column; the needle tube penetrates through the through hole and is provided with a flat part at the tail end. According to the indwelling needle, after glue is cured in the dispensinggroove, the flat part and the glue form an inverted buckle structure in the dispensing groove, and the inverted buckle structure can increase the drawing force between the needle tube and the needlehandle, so that the connecting strength between the needle tube and the needle handle is improved. During assembly, the tail end of the needle tube sequentially penetrates through an isolation plug and the needle handle, and then the tail end of the needle tube is flattened to form the flat part, so that assembly is facilitated; and after a catheter seat and the needle handle are assembled, the tail end of the needle tube is pushed to adjust the position between a needle tip and a catheter, and then dispensing and curing are performed, so that the distance is convenient to adjust.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an indwelling needle and an assembly process thereof. Background technique [0002] The indwelling needle is a medical device used for indwelling needle infusion, which mainly includes a catheter assembly, a needle tube assembly and a hose assembly. Wherein, the catheter assembly includes a catheter, a metal wedge and a catheter seat, the needle tube assembly includes a needle handle and a needle tube, and the hose assembly includes a hose, a hose holder, a heparin cap and a small cap. [0003] When the indwelling needle is used clinically, the needle tube assembly is mainly used for blood vessel puncture. After the puncture is successful, the needle tube assembly is pulled out, and the catheter is placed in the blood vessel for infusion. Therefore, the cleanliness and separation force of the needle tube assembly have a great influence on the product. In the existing nee...

AI Technical Summary

Problems solved by technology

In the existing needle tube assembly, the tail end of the needle tube is assembled to the front notch of the needle handle, and then the glue is dispensed and cured at the front notch of the needle handle. This method makes it very easy for the glue to be placed on the front end of the needle tube or the glue overflows

In addition, in the existing production process, the needle tube and the needle handle are fixed by dispensing glue first, and then the distance between the catheter assembly and the catheter assembly is adjusted at the same time. Due to the unavoidable error in the assembly between the catheter and the catheter base, and at this time, the needle tube The position with the needle handle has been fixed, which makes it difficult to adjust the distance, resulting in a low qualified rate of products

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