Medical and surgical measuring apparatus, equipment, devices and instruments for determining volume and cross-section of vessels, lumens, vagina, uterus, sphincters and cervix in the human or animal body; medical and surgical apparatus, equipment, devices and instruments for dilating vessels, lumens, vagina, uterus, sphincters and cervix in the human or animal body; medical and surgical apparatus, equipment, devices and instruments for ablating tissue from vessels, lumens, vagina, uterus, sph...