Catheter

Abstract

The invention discloses a catheter, and relates to the field of medical apparatuses and instruments. The catheter is designed for solving the problem that an existing catheter injures mucosa on the inner wall of a bladder. The catheter comprises a catheter body. A water injection channel is arranged inside the catheter body. A first valve is arranged at the rear end of the water injection channel. A ball is arranged at the front portion of the catheter body and communicated with the front end of the water injection channel. The catheter is characterized in that a bullet-shaped high pressure water bag is arranged at the front portion of the ball, a plug is arranged at the rear portion of the high pressure water bag, the plug is plugged into the front end of the catheter body, the outer wall of the plug makes contact with the inner wall of the front end of the catheter body, a high pressure water injection pipe communicated with the high pressure water bag is arranged inside the catheter body, the front end of the high pressure water injection pipe and the high pressure water bag are fixed together, and a second valve is arranged at the rear end of the high pressure water injection channel. A flushing channel is arranged inside the catheter body. An opening in the front end of the flushing channel is located in front of the ball. The catheter has the advantage that vice-damage generated by an existing catheter on the mucosa on the inner wall of the bladder is lowered to the minimum.

Description

Technical field: [0001] The invention relates to the field of medical instruments, in particular to a urinary catheter. Background technique: [0002] Catheterization is one of the common medical operations in clinical practice. It is suitable for urinary retention caused by lower urinary tract obstruction or neurogenic bladder. Catheterization is also used in rescuing critically ill patients, preparing for surgery, infusing drugs in the bladder or washing etc. [0003] At present, the clinically used urinary catheter has a double-lumen structure and a three-lumen structure. The double-lumen catheter includes a urinary catheter and a water injection channel. The urinary catheter in front of the balloon is provided with a urine inlet, and the front end of the catheter is fixed with a bullet-shaped end; the three-chamber urinary catheter also includes a flushing channel, and the urinary catheter at the front end of the balloon is provided with a flushing channel. Openings th...

AI Technical Summary

Problems solved by technology

However, the total length of the catheter and the bullet-shaped end in front of these existing catheter balloons is 2-3 cm. When the patient uses it, the end is in contact with the mucous membrane of the inner wall of the bladder, causing bladder pain in different degrees in a short period of time. Inflammatory changes, hyperplasia, ulceration, bleeding, etc. of the inner wall mucosa, long-term implantation w

Images