导尿管

例句：

1. 1. The doctor inserted a catheter into his patient's bladder to drain urine.
   医生将导管插入患者的膀胱以排放尿液。
2. 2. Thepatient was given a urethralcatheter for pain relief during theprocedure.
   患者在接受手术过程中被给予尿道导管以缓解疼痛。
3. 3. The nurse carefully removedthe urethral catheterafter the patient had passed urine.
   护士在病人排尿后小心地移除了尿道导管。