| 摘要 |
<p>Intrauterine contraceptive device (IUD) placed in the frontal plane of the upper uterine segment, comprises a member formed of flexible material and having a central portion, with a pair of upper arms extending outwardly and around from the central portion to form non-spiral loops in which the distal end of each of the arms does not return toward and overlap the central portion. Pref. the member is formed of solid material and the central portion is rigid so as to have sufficient stiffness to resist distortion in the uterus. The central portion has an equal length and width. A fourth arm portion may extend down from the central portion, then outwardly and inwardly toward one arm.</p> |
