Abstract: A surgically implantable prosthesis system including at least one flexible inflatable member and an imperforate housing. A flexible combination reservoir and pump located within the housing for storing liquid when the inflatable member is deflated and for pumping liquid into the inflatable member and a flexible tube connecting the combination reservoir and pump and the inflatable member for the passage of a liquid between the combination reservoir and pump and the inflatable member. A rechargeable battery operates a reversible electric motor located within the housing operatively connected to the combination reservoir and pump to collapse the combination reservoir and pump to force liquid out of the combination reservoir and pump through the tube into the inflatable member and to expand the combination reservoir and pump to receive liquid from the inflatable member and a battery located within the housing to operate the motor.