How to use the catheter?

Take the common "Kangyuan catheter" in hospitals as an example. First, lubricate the front end and head of the catheter with medical lubricating cotton balls, carefully insert the catheter into the urethra to the bladder (urine is discharged at this time), and then insert it for 3-6cm, so that the water bladder (balloon) can completely enter the bladder. Next, hold the valve sleeve on the interface of Kangyuan catheter, forcibly insert the water injection valve with a syringe without a needle, inject sterile water not exceeding the nominal rated amount, and finally gently pull the catheter outward, so that the inflated water sac (balloon) can catch the bladder.