Medical apparatus comprised primarily of a disposable treatment device and generator for treating the uterus; catheters for distending the uterine cavity; medical devices for supplying distension media to a bodily cavity; medical devices for delivering vapor in a bodily cavity; medical devices for containing vapor in a bodily cavity; medical devices for gynecology applications, namely, endometrial ablation; medical devices for sealing a body lumen, namely, the cervix; medical balloons for sealing a body lumen; medical devices for testing uterine integrity; medical devices for testing patency of a device lumen; steam generators for medical purposes; vaporizers for medical purposes; medical devices, namely, surgical devices that facilitate the identification, separation or ablation of biologic tissues; catheters for use in uterine ablation; catheters and parts and fittings therefor; catheters; medical devices for placing and securing catheters; tubing for use with catheters; inflation devices for balloon catheters; balloon catheters; uterine syringes; medical balloons; medical balloons for use in cervical sealing; gynecological medical instruments for examining women's reproductive organs; hysteroscopes