A device for sterilizing females by occluding the uterotubal junction. The device includes a catheter with a releasable heat generating plug which is used to thermally damage the uterotubal junction and cause it to constrict around the plug, after which the plug is released from the catheter and left...http://www.google.com.au/patents/US20020072744?utm_source=gb-gplus-sharePatent US20020072744 - Method and apparatus for tubal occlusion
