catheter
n. countablen. a thin, flexible tube that a doctor puts into your body to add or remove fluids. It is most often used to help people empty their bladder when they cannot go to the bathroom normally.
n. a flexible tube inserted into a body cavity, duct, or vessel to allow the drainage or injection of fluids. Most commonly refers to a urinary catheter used to drain the bladder.
The nurse inserted a catheter to help the patient after surgery.
After the operation, the patient required a catheter for several days until they were mobile enough to use the restroom.
Medical professionals must maintain a sterile environment during the insertion of a catheter to prevent the introduction of bacteria into the urinary tract, which could lead to a secondary infection.
Borrowed from French cathéter, from Late Latin cathetēr, from Ancient Greek καθετήρ (kathetḗr, “surgical instrument for emptying the bladder”), from καθίημι (kathíēmi, “to descend, let down”) + -τήρ (-tḗr, suffix forming masculine nouns from verbs).
Commonly used with the verbs 'insert', 'remove', or 'change'.