INTRAUTERINE CONTRACEPTIVE

摘要

FIELD: medicine, gynecology. SUBSTANCE: intrauterine contraceptive has a rod with copper spiral and elastic horizontal branches as small shoulders with copper sockets put on them. Cone-shaped protrusions are designed at these shoulders. The largest diameter of protrusions are equal to that of a socket. EFFECT: decreased traumaticity of the walls of uterine cervical canal. 3 dwgt