| 摘要 |
FIELD: medicine. ^ SUBSTANCE: group of inventions refers to medicine. An intrauterine contraceptive device comprises a bearing body and an active metal alloy of formula ZnxCuyMnzAuk (I) or ZnxCuyMnzAgk (II) in which x+y+z+k=100 wt %, x varies within the range approximately 18 to 30 wt %, z varies within the range approximately 0.5 to 3 wt %, and k varies within the range approximately 3 to 12 wt %, and y makes the rest. ^ EFFECT: group of inventions provides shorter and less intensive menstruation, and reduces a risk of abdominal contamination. ^ 9 cl, 1 dwg |
