Promising Development In Reversible Male Birth Control

Twenty years ago Clemens Bimek, a German carpenter, became intrigued with the possibility of preventing conception by impeding the flow of sperm with an on/off switch attached inside a man's body to the vas deferens. Such an approach in theory would mechanically stop sperm from ejaculating during sex when the valve closed the ducts in a way similar to a surgical vasectomy. In contrast to a traditional vasectomy, however, the valves envisioned could be opened again. More ...