Medical needle with self-destroying and puncture-resistant functions

Abstract

The invention provides a medical needle with self-destroying and puncture-resistant functions. The medical needle comprises a needle seat, a self-destroying mechanism and a needle core that penetrates the needle seat, wherein the self-destroying mechanism comprises a containing pipe, a self-destroying switch and an elastic part, the containing pipe comprises an outer containing pipe and an inner containing pipe, and the inner containing pipe can be movably penetrated in the outer containing pipe; by operating the self-destroying switch, the elastic part can be started to drive the needle core to retract back into the containing pipe, meanwhile, the inner containing pipe penetrates out of the rear end of the outer containing pipe, and the containing pipe is provided with a springback-resistant structure which is used for preventing the inner containing pipe from springing back forwards. Compared with the prior art, as the springback-resistant structure is arranged, the inner containing pipe can be locked tightly and cannot spring back forwards accordingly after stretching out backwards, so that the front end of the needle core is prevented from springing back and stretching out from the front end of the containing pipe, and the hidden danger of puncturing medical workers and bringing about infection is eliminated.

Description

technical field [0001] The invention relates to the technical field of medical needles, in particular to a medical needle with a self-destructing anti-stab function. Background technique [0002] The intravenous indwelling needle is also called the intravenous trocar, which is composed of a stainless needle body core, a cannula and a plastic needle seat. When puncturing, the stainless needle body core and the outer sleeve are inserted into the blood vessel together, and the stainless needle body core is pulled out after entering the blood vessel, leaving the soft sleeve in the blood vessel for infusion. Since the cannula placed in the vein is a flexible tube, the damage of the needle body to the blood vessel is avoided, and the patient can carry the needle for mild activities. The venous indwelling needle is suitable for puncture at any part. One puncture can be used continuously or at intervals for multiple times and for multiple days, which reduces the pain of repeated pu...

AI Technical Summary

Problems solved by technology

But this structure has a new problem. After the needle core is retracted to the storage tube, the rear end of the inner storage tube will collide with the outer storage tube, and the inner storage tube will be rebounded, causing the front end (i.e. the tip) of the needle core to move from the storage tube. The front end protrudes, posing a great risk of stabbing medical staff and causing infection

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