Controlling male fertility has been a quest for hundreds of years, but it took the Australians to figure out all you really need is a remote control.
From New Scientist:
“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.
The team from the University of Adelaide, Australia, have designed a small radio-controlled valve that would “push-fit” snugly inside the vas deferens and block the passage of sperm. The silicone-polymer valve can be flipped between open and closed positions with a pulse of radio waves.
To secure the device against accidental activation, the device works in a similar way to a car’s remote key-fob. Each valve responds only to a radio-frequency signal with a unique code.
Another advantage of the microvalve is that would not require open surgery, unlike a vasectomy. The 800 micron-long device could simply be inserted using a hypodermic needle.”