This product is mainly composed of a handheld pump, a rubber catheter and a cup body(mushroom-shaped cup body and bell-shaped cup body). The cup body material ispolycarbonate. This product is supplied sterile and is intended for single use This product is an obstetrics and gynecologica device suitable for prolonging the secondstage of labor (stop of descent) related to the fetal head and pelvis, predicting a fetalnead crisis (not considered serious), or shortening the second stage of labor based on thecondition of the mother and the fetal head.