Nerve-blocking puncture catheter needle with adjustable puncture head

A puncture catheter and nerve block technology, which is applied in the direction of puncture needles, puncture needles, catheters, etc., can solve the problems of harming the patient's health, nerve damage, and the catheter cannot be accurately placed near the target nerve, so as to achieve the effect of convenient puncture

Active Publication Date: 2014-08-27
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 p

Method used

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  • Nerve-blocking puncture catheter needle with adjustable puncture head
  • Nerve-blocking puncture catheter needle with adjustable puncture head
  • Nerve-blocking puncture catheter needle with adjustable puncture head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A nerve block puncture catheter needle with an adjustable puncture head, comprising a puncture catheter 1 and a puncture needle core 2, two side holes 11 are provided on the puncture catheter 1 at a distance of 5 mm from one end thereof, and an interface structure is provided at the other end, the puncture catheter 1. The length is 10 cm; the puncture needle core 2 includes a puncture needle body 21, a handle front handle 22 and a handle rear handle 23; the puncture needle body 21 is a hollow tube with the same outer diameter as the inner diameter of the puncture catheter 1, and one end is a tip , the other end of which is connected to the rear handle 23 of the handle; the front handle 22 of the handle is a hollow tube with the same inner diameter as the outer diameter of the puncture needle body 21, one end of which matches the interface structure of the puncture catheter 1, and the other end is provided with an internal thread; The end of the handle rear handle 23 conn...

Embodiment 2

[0039] A nerve block puncture catheter needle with an adjustable puncture head, the rest of which are the same as in Embodiment 1. When the external thread of the handle rear handle 22 is completely screwed into the internal thread of the handle front handle 22, one end of the puncture needle body 21 protrudes Puncture catheter 1 tip 2mm. The length of the puncture catheter 1 is 20 cm.

Embodiment 3

[0041] Such as figure 2 Shown is the overall schematic diagram of the present invention. The rest are the same as in Embodiment 1. The handle 12 is provided with a lock. When the handle 12 is moved to a suitable position for easy grasping or fixing, the lock can be locked, and the handle will not move any more, and can be punctured or stabbed by hand. fixed. The liquid inlet 231 on the handle rear handle 23 is a standard syringe interface, and the injection liquid passes through the liquid inlet 231, passes through the passage in the handle rear handle 23, the passage in the puncture needle body 21, and passes through the tip of the puncture needle body 21. flow out. The interface structure of the puncture catheter 1 is an injection spiral interface, which can be connected to a syringe for drug injection, and can also be tightly connected with a clinical continuous drug delivery system for continuous drug delivery. The drug flows out through the port of the puncture cathete...

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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...

Claims

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Application Information

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IPC IPC(8): A61B17/34
CPCA61B17/3401A61B17/3415A61B17/3462
Inventor 马宇王猛
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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