Recently the decision on dilating of clinical tests of a new method of man's contraception passing in the USA was accepted. The small-type device developed by the American scientists, is capable to block seed cords for a while. The adaptation made of silicone under phentrimine name Intra Vas Device (IVD) is introduced into seed cords through a small cut on a scrotum, quenching thus an ejaculation at an orgasm. Experiences on monkeys and the first stage of clinical tests with participation of 30 volunteers, have shown high efficacyy of a new method of contraception. Now scientists prepare for a new series of tests in which course efficacyy will be confirmed, reliability and safety of long application IVD. Conducted expanded clinical tests IVD will last about 2 years. Pristinely Phentermine in them it was planned to involve volunteers only from the city of Saint Paul, the State of Minnesota, however, because of the big flow of interested persons, to participation in tests it has been decided to admit inhabitants of three more cities of staff. All volunteers are fathers of families, interested persons it is more to have children, and collecting in the past to pass traditional surgical sterilisation.