Stenosis dilatation catheter

Abstract

A stenosis dilatation catheter is provided, including a catheter, a stenosis dilator is movably provided in the urine passage of the catheter, the stenosis dilation guide includes a tubular stenosis dilation guide body, at that front end of the narrow expansion guide body, the rear end of the guide portion is provided with an air bag, a through hole is arranged on the side wall of the narrow expansion guide inside the air bag, the posterior end of the stenosis dilation guide body is provided with an elastic bag body, the elastic bag body and the stenosis dilation guide body form a sealed spacefilled with gas or liquid inside, the front end of the urine passage is provided with an opening, the guide portion and the air sac are arranged outside the front end of the urine catheter through the opening of the front end of the urine catheter, and the elastic bag body is arranged outside the urine cavity. As that urethral stricture occur, the urethral stricture dilator is moved forward, thenthe elastic bag body is squeeze, the balloon is propped up, the urethral side wall is distracted, the urethral catheter continues to advance, the elastic bag body is loosened, and the operation is repeated, so that the urethral catheter is easy to be inserted.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a painless narrow dilated urinary catheter. Background technique [0002] As a common clinical medical device, the urinary catheter is inserted into the human body through the urethra to drain urine from the bladder to the outside of the body. Its main function is to accurately record the urine volume, facilitate drainage and flushing, and play an important role in clinical practice. [0003] Catheters are mainly made of silica gel, rubber, EVA, PVC, etc., and the head and body are soft. However, in some patients, due to urethral stricture, prostatic hyperplasia, canceration, and bladder neck sclerosis, the internal resistance of the urethra is too large, which greatly increases the difficulty of catheterization. In the existing clinical catheterization, the external opening of the urethra is usually fixed with one hand after disinfecting the external opening of the urethra and su...

AI Technical Summary

Problems solved by technology

When this kind of catheter is inserted into the guide wire, the guide wire is led out from the side opening of the catheter through the lumen, so the position of the catheter and the guide wire cannot be guaranteed to be parallel to each other, resulting in difficulty in guiding and failure to insert the catheter

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