| 摘要 |
FIELD: medicine. ^ SUBSTANCE: contraceptive has elastic resilient enclosure, longitudinal cavities and transversely closed tapes attached to inner surface of enclosure. Longitudinal cavities are connected with one another and with elastic balloon via two-way return valves. Contraceptive is equipped with closed threads arranged lengthwise of enclosure and along closed tapes. ^ EFFECT: improved erection. ^ 3 cl, 1 dwg |
