Abstract: A prosthetic implant comprising a first membrane defining a first compartment and a second membrane, spaced inwardly from the first membrane, defining a second compartment contained within the first compartment. The second compartment is filled with a constantly adjustable amount of fluid. A distinctive unit, situated between the first and second membranes, is filled with a number of individual microcapsules which contain closed volumes smaller than 1 cc of fluid. The microcapsules optionally may be united together by a silicone adhesive. The small volumes avoid leakage of significant amounts of fluid during puncture of the prosthesis to inject or remove fluid subsequent to implantation.

Abstract: A surgically implantable prosthetic device wherein dry particles of hydrogel/silicone combinations are contained within an envelope. The dry character of the device allows it to be sterilized without adverse affect, while injection of water or physiological fluid after implantation causes it to swell to proper size and texture.