| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel intrauterine system.SOLUTION: The intrauterine system comprises: a reservoir 2; a continuous, closed, and flexible frame 1; and threads 3 for removal of the system. The frame is a triangular-shaped frame with rounded corners. The reservoir comprises at least one therapeutically active substance, and is assembled on a shaft 5 connected both to the lower and to the upper part of the frame. The cross section of the reservoir is circular, oval, flat, elliptical, rectangular, angular, polygonal, or star-shape. |
