Methods Metal core insertion was to stall sterility steel wire into urethral catheter and fold into fit shape. Then inserted urethral catheter to urinary bladder.

• 方法管芯植入法是将无菌钢丝植入导尿管内,折成金属导尿仪的形状,再用导尿管经尿道插入膀胱引出尿液的方法。