Sleeve type multifunctional puncture-proof indwelling needle

Abstract

The invention discloses a sleeve type multifunctional puncture-proof indwelling needle. The needle comprises an indwelling hose (3), an outer needle seat (5), an outer sleeve (1), a puncture needle (4), an inner needle seat (6) and an inner catheter (2) which are coaxially arranged. Based on simple structure, convenience in production and use, low cost and convenience in popularization, the sleeve type multifunctional puncture-proof indwelling needle can achieve the effects that the inner catheter which can move in the axial direction and is used for conveying liquid is arranged in the flexible and bendable outer sleeve, the indwelling hose is connected to the outer sleeve, and the puncture needle for puncture is connected to the inner catheter; After puncturing, a steel needle is not pulled out but is hidden in the outer sleeve, so that medical devices for injection, transfusion, blood sampling and the like can be directly connected with the inner catheter for operation.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a cannula-type multifunctional stab-proof indwelling needle. Background technique [0002] The indwelling needle includes an infusion hose placed inside the blood vessel, a needle seat that fixes the infusion hose for easy handling, and a puncture needle inserted inside the infusion hose to guide the infusion hose into the blood vessel. According to the structure and the direction of infusion after puncture, the indwelling needle is divided into two types: Y type and straight type. In clinical care, indwelling needles are widely used, and they can be repeatedly infused to save patients from the pain of repeated punctures. However, there are many deficiencies in the existing indwelling needles, the typical performances are: (1) The function is single, the Y type can only be used for infusion and cannot be used for blood collection; although the straight type c...

AI Technical Summary

Problems solved by technology

However, there are many deficiencies in the existing indwelling needles, the typical performances are: (1) The function is single, the Y type can only be used for infusion and cannot be used for blood collection; although the straight type can be used, the blood vessel must be pressed to prevent bleeding when the needle is withdrawn, and then the joint is quickly connected (2) stab-proof safety is low, and it is easy to be stabbed by a puncture needle during use, thereby causing blood-borne disease infection. Although there are a few stab-proof products, either the stab-proof effect is not good good, or the structure of the anti-stab device is complicated, the production cost is high, and it is not conducive to large-scale promotion and use; (3) the comfort is poor, the sheath is all of a hard structure, and it needs to be fixed on the patient's body with adhesive tape when indwelling, resulting in Patient is very uncomfortable

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