Implant and implanting method and tool

Claim 1

In a method for introducing a valve having an intermediate portion and tubular extensions respectively extending in opposite directions from said intermediate portion into a vas deferens of a living being, the step of removing a part of the vas deferens extending outwardly from the lumen thereof at only one side of the lumen so as to leave at the vas deferens a continuous portion extending between free ends of the lumen which are exposed by removing said part thereof, introducing the tubular extensions into the free ends of the lumen, respectively, deflecting the continuous portion of the vas deferens away from the lumen thereof to advance the free ends of the lumen toward the intermediate portion of the valve for pulling the vas deferens onto the opposite tubular extensions, forming from the deflected continuous portion of the vas deferens a pair of flaps which engage each other, which remain connected to each other at their outer ends which are distant from the lumen, and which project laterally from the lumen, and fastening the flaps together so that they will grow together and maintain the free ends of the lumen adjacent the intermediate portion of the valve.