| 摘要 |
<p>An intra-uterine contraceptive device with shape memory function and its accessory device are composed of an intra-uterine contraceptive and an inserter. The intra-uterine contraceptive device is constituted by a stent which is made of shape memory alloy. Two bowed arms of the stent are open bowed structure with seven sinuosities. The angle of two bowed arms is within the range of 90°~180°. The diameter of the stent is within the range of 0.3~0.7mm. Two bowed arms of the stent are fixed with two column oxygen-free copper pieces or covered by silica rubber on the ends. The stent is sheathed with copper sleeves or silica rubber strips or tubes containing antipyrotic, or slow release capsules of contraceptive.</p> |
