一次性双腔气囊尿管因为容易固定 ,不易脱落等优点 ,现在已经广泛应用于临床 ,但如使用不当或操作时疏忽 ,也可能引起意外 ,造成后尿道出血等并发症 ,将加重病人心理和身体上的痛苦 ,增加病人的住院时间及费用。1　病历介绍患者 ,男 ,73岁。因心肌梗死 1个月 ,排尿困难 5ｄ ,于 Disposable double-lumen balloon catheter because of easy fixation, not easy to fall off, etc., has now been widely used in clinical, but if used improperly or negligently during operation may also cause accidents, resulting in complications such as posterior urethral bleeding will aggravate the patient’s psychology and Physical pain increases patient stay and costs. 1 medical records of patients, male, 73 years old. 1 month due to myocardial infarction, dysuria 5d, at