Patent ID: 8114011

Claim:
An inflatable penile prosthesis cylinder comprising: an external wall defining a pressure chamber, the pressure chamber having an inflated state and a deflated state; and a plurality of corrugations formed in the external wall, the corrugations extending along a longitudinal axis of the cylinder, each corrugation comprising: first and second circumferential walls extending along a circumference of the cylinder; a first side wall extending from the first circumferential wall and along a radial direction from the longitudinal axis; and a second side wall opposite the first side wall, the second side wall extending from the first circumferential wall to the second circumferential wall and along the radial direction; wherein: the corrugations each have a depth corresponding to a distance the first and second circumferential walls are displaced from each other in the radial direction; and the depth of the corrugations when the cylinder is in the deflated state is greater than the depth of corrugations when the cylinder is in the inflated state.