Clinical Study Two:

●from 1998 to 2000,in the comparative studies of six IUDs , Yuangong IUD was authenticated as the domestic leading scientific research result

●Participate Centres: Science & Technology Ministry of PRC; Shandong Family Planning Science & Technology Department

Authenticated Opinion

…… the comparative studies indicate:

expulsion: MlCu375SL>LTCu >Uterine shape IUD>γ IUD>TCu380A >Yuangong IUD

pregnancy with IUD in-situ: LTCu>TCu380A>Uterine shape IUD > MlCu375SL >γ IUD >Yuangong IUD

removal by medical reasons: MlCu375SL>TCu380A>Uterine shape IUD > Yuangong IUD > LTCu >γ IUD

rate of failing: MlCu375SL>LTCu >Uterine shape IUD>TCu 380A>γ IUD

>Yuangong IUD

……

The results indicate : the most suitable IUDs are medicated Yuangong IUD and medicated γ IUD. The structure is coincided with the shape of the uterine cavity.

Director of Commity: vice derector:

21^st,March,2000