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'Vas-occlusive contraception' is an experimental male contraceptive method that is not yet approved for general use. Proposed methods of vas-occlusive contraception attempt to prevent sperm from traveling down the vasa deferentia. Potential methods include , s, valves, and other devices.
The 'intra vas device', analogous to the intrauterine device (IUD) for women, is meant to be a reversible alternative to a vasectomy. The device consists of a set of flexible, hollow silicone plugs, each about a millimetre in diameter and 2.5 cm long. The IVDs are inserted into the vas deferens and block the flow of sperm from the testes to the seminal glands.

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Progress

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Progress

As of 2005, human clinical trials are being performed to evaluate its effectiveness as a contraceptive. One version is currently in research and development at the Shepherd Medical Company in Vancouver. Another version currently being researched in China is an elastomer plug device, using medical-grade polyurethane (MPU) and silicone rubber (MSR) injected as a liquid.^[1]
The FDA approved human trials for the intra-vas device in 2006.^[2]

References

1. [1]
2. Full text PDF Male Contraceptive Methods Are in the Pipeline, Robert Finn, , , Ob.Gyn. News 42:28, May 1, 2007,

See also

★ Male contraceptive

External links

★

★ Press release on Dr. Pollock's website

★ Another article

★ Birth control for men promising — has some extra details and information about current trials

★ Reversible male implant may be future of contraception

★ Birth control breakthrough — But will it hold mass appeal? (picture appears to be a mistake)

★ Information about Chinese versions — using MPU medical-grade polyurethane, and MSR medical-grade silicone rubber

★ Information about a silicone rubber version, the shug — anchored with a suture