An auxiliary syringe for pulling out a catheter

Abstract

The invention relates to an auxiliary syringe for pulling out a urinary catheter, comprising an outer barrel, a piston and a push rod. The front end of the outer barrel is provided with a needle seat,the piston is slidably sealed in the outer barrel, a piston cavity is formed between the piston and the closed end of the outer barrel, and one end of the push rod extends into the outer barrel and is fixedly connected with the piston. Characterized in that it also comprises a connecting pipe and an on-off valve, wherein the first end of the connecting pipe is communicated with the piston chamber, the second end of the connecting pipe is communicated with the atmosphere, and the on-off valve is installed on the connecting pipe. The auxiliary syringe of the invention can optimize the pulling-out operation of the urinary catheter, Specifically, before removing the catheter, The on-off valve of the syringe is in a closed state, air is sucked into the piston chamber, the syringe is connectedto the end of the urethral balloon, the liquid in the balloon is sucked out, after the liquid in the balloon is sucked out, the syringe is vertically injected with a small amount of liquid in the balloon, the on-off valve is opened, the urethral catheter is pulled out slowly, and the patient has no obvious uncomfortable feeling such as urethral pain.

Description

technical field [0001] The invention relates to an auxiliary syringe for pulling out urinary catheters, belonging to the field of medical instruments. Background technique [0002] In clinical practice, when using the Forly catheter to catheterize patients, it needs to be used with a syringe. For example, after the urinary catheter is introduced into the patient's bladder, a syringe needs to be used to inject liquid into the urinary catheter balloon, thereby fixing the urinary catheter in the bladder. For another example, when pulling out the urinary catheter, it is necessary to use a syringe to draw out the liquid in the air bag to shrink the air bag so that the urinary catheter can be pulled out smoothly. Although the fluid in the airbag was pumped away, the airbag could not return to its original state after being expanded by the liquid, and the more water was injected and the longer the indwelling time, the greater the bulge formed at the end of the airbag. In order to...

AI Technical Summary

Problems solved by technology

Although the fluid in the balloon is pumped away, the balloon cannot return to its original state after being inflated by the fluid, and the more water is injected and the longer it is left in place, the greater the bulge formed at the end of the balloon

In order to avoid residual liquid in the balloon, the medical staff usually suck it hard, resulting in negative pressure at the bulging end of the balloon and creating a sharp cutting edge, which makes it easy to scratch the urethral mucosa during the removal of the catheter, causing severe pain to the patient Sensation, induce frequent urination, urgency and even hematuria

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