Vas-occlusive contraception

Vas-occlusive contraception

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.

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. [ [http://www.malecontraceptives.org/methods/mpu.htm malecontraceptives.org] ]

The FDA approved human trials for the intra-vas device in 2006. [ [http://www.obgynnews.com/article/PIIS0029743707703956/fulltext Full text] [http://download.journals.elsevierhealth.com/pdfs/journals/0029-7437/PIIS0029743707703956.pdf PDF] cite journal | title=Male Contraceptive Methods Are in the Pipeline |author=Robert Finn |journal=Ob.Gyn. News 42:28, May 1, 2007 ]

ide effects

This would have similar side effects to vasectomy, such as formation of sperm antibodies.

See also

* Male contraceptive

References

External links

*
* [http://www.pollockclinics.com/post.html Press release on Dr. Pollock's website]
* [http://www.pollockclinics.com/mcleans.html Another article]
* [http://www.religiousconsultation.org/News_Tracker/birth_control_for_men_promising.htm Birth control for men promising] — has some extra details and information about current trials
* [http://www.medicalpost.com/mpcontent/article.jsp?content=/content/EXTRACT/RAWART/3723/02B.html Reversible male implant may be future of contraception]
* [http://www.fims.uwo.ca/radio/newraw/news/Feb142005/Feb142005articles/Birth%20Control%20Breakthrough.htm Birth control breakthrough — But will it hold mass appeal?] (picture appears to be a mistake)
* [http://www.malecontraceptives.org/methods/mpu.htm Information about Chinese versions] — using MPU medical-grade polyurethane, and MSR medical-grade silicone rubber
* [http://www.malecontraceptives.org/methods/shug.htm Information about a silicone rubber version, the shug] — anchored with a suture
* [http://www.dailymail.co.uk/pages/live/articles/health/healthmain.html?in_article_id=409582&in_page_id=1774 Male contraceptive trial to be expanded] — "A US trial of a new male contraceptive is being expanded after men rushed to sign up."


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