Therapeutic stump treating air sac prosthesis

Claim 1

In a prosthetic device for therapeutic treatment of an amputative stump, the combination which comprises means providing an air sac shaped for arrangement in intimate contact with the sides and bottom of the amputative stump, said air sac being essentially empty except for said air, and being internally open and unimpeded with respect to flow of air from place to place within said sac, means for introducing air into said sac for maintenance of said air under pressure therein, said air sac having an internal and an external side wall which are shaped downwardly and inwardly in a manner to provide an air space which is adapted to wrap substantially around the distal end of the stump, means for providing a substantially rigid casing surrounding and confining said air sac, and supporting means for said casing, wherein said air sac has a sealed distal end adapted to be located in the area of the distal end of the amputative stump, and wherein a shock-absorbing resilient supporting means is provided extending under and in contact with said distal end of said air sac, and arranged to exert a force against said distal end in a direction to urge it upwardly toward and against said distal end of said stump.