An inserter for the positioning of an intrauterine device in the uterus, which inserter includes a plunger, a handle attached to the plunger, a string for the removal of the IUD, a locking device to lock the string in such a way that the IUD remains immobile in relation to the plunger, and a protective...http://www.google.de/patents/US5785053?utm_source=gb-gplus-sharePatent US5785053 - Inserter for the positioning of an intrauterine device