气囊气孔;
Objective : To invent an intracavity air sac urinary catheter to meet the clinical requirement.
目的: 研制一种适合临床需要的腔内气囊导尿管.
To study inside endoscopy bottom the air sac expansion treatment achalasia the long-term curative effect.
目的观察内镜下气囊扩张治疗贲门失弛缓症远期疗效.
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