Nerve block puncture catheter needle with adjustable puncture head

Abstract

The invention belongs to the technical field of medical apparatuses and instruments and provides a nerve-blocking puncture catheter needle with an adjustable puncture head. The catheter needle mainly consists of a puncture catheter and a puncture needle core. During operation, the puncture needle core is sleeved by the puncture catheter, and the sharp end of the puncture needle core extends out of a port of the puncture catheter and has sharpness. Under the ultrasonic guidance, the sharp end of the puncture needle core can return to the puncture catheter through adjustment and control when the catheter is close to the target nerve, and the catheter needle loses the sharpness but still has toughness and can continue to penetrate the fascia tissue to be close to the nerve till the catheter needle touches the nerve. Due to the fact that a needle point returns back to the catheter and loses the sharpness, the nerve is not hurt, the catheter needle reaches a target position, the puncture needle core can be directly removed, and the puncture catheter is indwelt around the nerve for future anesthesia medicine application or anesthesia analgesia treatment and other applications.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a nerve block puncture catheter needle with an adjustable puncture head. Background technique [0002] The continuous nerve block technique refers to precisely placing a catheter near the target nerve, and injecting local anesthetic drugs near the target nerve through the opening of the catheter to achieve the purpose of anesthesia and pain treatment. The medical devices used in the continuous nerve block technique are faced with two contradictory problems of safety and precision. Safety mainly means that the puncture needle may inadvertently penetrate into the target nerve during operation and cause nerve damage. Accuracy requires the opening of the catheter to be as close as possible to or even touch the target nerve, which is conducive to the precise flow of drugs to the target nerve to exert its drug effect. . [0003] With the application of ultrasound and other te...

AI Technical Summary

Problems solved by technology

Although the indwelling catheter needle for this kind of nerve block can remind the operator that the catheter needle has entered the sheath or subfascia through the pressure detection device, and guide the operator to perform the operation, it cannot fundamentally prevent the needle tip of the catheter needle from touching the target nerve. However, if the dangerous situation of nerve damage occurs, the operator's piercing speed or excessive force will still cause nerve damage and damage the patient's health.

Therefore, the operator will avoid the needle tip from touching the target nerve to prevent damage, but this leads to the indwelling catheter through the needle core cannot be accurately placed near the target nerve, thus affecting the effect of drug delivery through the catheter, anesthesia and analgesia sometimes not ideal

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