Radio-Controlled Sperm "Tap" Birth Control In Development

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A radio-controlled contraceptive implant that could control the flow of sperm from a man's testicles is being developed by scientists in Australia.

The device is placed inside the vas deferens - the duct which carries sperm from each testicle to the penis. When closed, it blocks the flow of sperm cells, allowing them to pass again when it is opened via a remote control. The valve could be a switchable alternative to vasectomy, the researchers say.

Although women can choose from several long-term contraceptive methods, for men vasectomy is really the only option. With this procedure, the vasa deferentia are cut or blocked, a process that requires surgery and can require a week of recovery. The procedure cannot be reliably reversed, leaving some men to later regret their decision.

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