| 摘要 |
An intrauterine contraceptive device made from plastic and having a central core defining an intrauterine device nose, tail, and a pair of lateral side portions, and including retrograde spurs each having a bulbous contour, the spurs being arranged along the core side portions and of varying length so as to define a generally inverted pear shaped intrauterine device. Thin webs may be formed between adjacent spurs to increase the area of the invention, and multiple rows of spurs may be formed on each core side for better retention of the intrauterine device in the uterine cavity. A talisman and withdrawal cord may be attached to either end of the core. |
