Anti-breaking nerve block indwelling catheter needle

Abstract

An anti-breaking nerve block indwelling catheter needle comprises a needle core and a catheter. The needle core penetrates the inside of the catheter, at least one through hole is formed in the side wall of the front end of the catheter, the tail end of the catheter is fixedly connected with a connecting tube, a rubber plunger is arranged in the connecting tube, the periphery of the rubber plunger is sealed with the inner wall of the connecting tube, a handle is arranged at the rear end of the connecting tube, the needle core penetrates the rubber plunger, the rear end of the needle core is connected with the handle, a side tube is arranged on the side wall of the connecting tube in front of the rubber plunger, a channel is arranged in the needle core, an opening is formed in the side wall of the needle core positioned in the connecting tube and in front of the rubber plunger, the opening is communicated with the channel, and an anti-breaking fixing apparatus is arranged outside the catheter in front of the connecting tube. Continuous infusion of liquid medicines can be ensured by the aid of the through hole in the side wall of the front end of the catheter, the catheter can be prevented from breaking and blocking by the aid of the anti-breaking fixing apparatus, a 45-degree included angle is formed between an inclined surface of a needle tip and the axial direction of the needle core, resistance is conveniently sensed when a tunica vaginalis or fascia is broken through, the needle is not sharp, and nerves are not easily injured.

Description

Technical field: [0001] The present invention relates to articles for human life. In particular, the invention relates to a medical device, in particular to a catheter needle, in particular to an anti-breakage nerve block indwelling catheter needle. Background technique: [0002] The continuous nerve block technique can achieve the effect of prolonged anesthesia, postoperative analgesia and sympathetic nerve block according to the needs of the operation, and at the same time can realize divided administration, thereby reducing the risk of local anesthetic poisoning. In the prior art, nerve block anesthesia is implemented by using the method of allergy and nerve stimulation localization, which is accomplished by one-time injection of drugs by means of peripheral arteriovenous indwelling needles or hard external catheters. When the peripheral venous indwelling catheter is used, the position of the nerve is judged by the method of abnormal sensation, the needle core of the can...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an anti-buckling nerve block indwelling catheter needle. The above-mentioned anti-buckling nerve block indwelling catheter needle needs to solve the problem that the sleeve of the peripheral vein indwelling needle in the prior art is soft, easy to discount, easy to Technical problems such as being blocked by soft tissue, difficulty in continuous injection, sharp needle core, and easy nerve damage

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