| 摘要 |
A male contraceptive device has two sheaths (1, 4) which are relatively slidable for cleaning and assembly but keep stationary during use. Sheath (4) has an air hole (6) and the arrangement is such that air is allowed to and from the inner sheath via the air hole and passages between the sheaths. Air flow is partially restricted so that partial collapse of the sheaths occurs on withdrawal. |
