Nerve block indwelling catheter needle with resistance measuring device

Abstract

The invention discloses a nerve block indwelling catheter needle with a resistance measuring device. The nerve block indwelling catheter needle comprises a needle core, a catheter and a pressure detecting device, wherein the needle core penetrates through the catheter, the tail end of the catheter is connected with a connecting tube, a rubber plunger is arranged in the connecting tube, the needlecore penetrates through the rubber plunger, the side wall of the connecting tube in front of the rubber plunger is provided with a side tube, a channel is arranged in the needle core, the side wall of the needle core which is positioned in the connecting tube in front of the rubber plunger is provided with an opening, the opening is communicated with the channel, the pressure detecting device comprises a shell, an inner rod is arranged in the shell, the front end of the inner rod is connected with the rear end of the needle core, a pressure sensor is arranged between the tail end surface of the shell and the tail end surface of the inner rod, and connected with a measuring circuit through a signal wire, and the measuring circuit is connected with a display device. When the needle tip breaks through tunica vaginalis, the pressure on the needle tip has great difference which is expressed through the display device so as to prompt operating personnel that nerve block enters the tunica vaginalis and is adjacent to the nerve to be blocked. The nerve block indwelling catheter needle is simple and convenient in operation, and little in nerve injury.

Description

Technical field: [0001] The present invention relates to articles for human life. In particular, it relates to a medical instrument, in particular to a catheter needle, in particular to a nerve block indwelling catheter needle with a resistance measuring device. 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 completed under the guidance of B-ultrasound and / or under the assisted positioning of a nerve stimulator. The nerve block under the guidance of B-ultrasound is visualized positioning, although it reduces the complications of nerve injury to a certain extent, but the purchase of equipment requires high costs, and correct operation and use also require learn...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a nerve block indwelling catheter needle with a resistance measuring device. The nerve block indwelling catheter needle with a resistance measuring device needs to solve the nerve block positioning technology or complicated operation in the prior art. , or technical issues that are unreliable and cause patient discomfort

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