The utility model relates to the technical field of
medical instruments, in particular to a hysteroscope
water leakage prevention device which comprises a
catheter for a hysteroscope to be inserted and a blocking air bag made of
elastomer materials, the blocking air bag is connected outside the
catheter in a sleeved mode, and the blocking air bag comprises a
necking front end, a front air ring, a connecting portion and a rear air ring. The inner
diameter of the inserting opening at the front end of the
necking opening is smaller than the outer
diameter of a hysteroscope sheath; the inner side face of the front air ring is connected with a front air ring ventilation
pipe penetrating through the guide
pipe, and the front air ring is connected between the front end of the
necking opening and the connecting part. The outer side wall face of the rear air ring is gradually thickened from back to front, the inner side face of the rear air ring is connected with a rear air ring ventilation
pipe penetrating through the guide pipe, and the rear air ring is connected to the rear portion of the connecting part. The rear ends of the front
balloon breather pipe and the rear
balloon breather pipe are used for being connected with an inflating and deflating device. The utility model has the advantages of simple structure, difficulty in
water leakage, smaller influence on the inspection range and less discomfort.