| 主权项 |
1. An intrauterine contraceptive system, comprising:
a contraceptive intrauterine device configured to change from a delivery configuration to an expanded, deployed configuration when released from constraint within a uterus; an insertion device for inserting the intrauterine device into the uterus, the insertion device comprising a shaft, a proximal end and a distal end, wherein the intrauterine device is at least partially contained in the shaft during advancement of the distal end of the insertion device into the uterus, and wherein the intrauterine device is advanced out of the distal end to deliver the intrauterine device into the uterus; a retrieval thread permanently attached to the intrauterine device for removing the intrauterine device from the uterus, wherein the retrieval thread has a length such that the retrieval thread does not require cutting after the intrauterine device is delivered into the uterus; and a release thread releasably coupled with, and not permanently attached to, the intrauterine device, to hold the intrauterine device in the insertion device, wherein when the release thread is no longer needed for holding the intrauterine device in the insertion device, the release thread may be pulled off the intrauterine device, and wherein the release thread extends from a first end, located at or near the proximal end of the insertion device, through the intrauterine device, to a second end. |
