Socket liner for artificial limb with permanent attachment to socket

Abstract

A hypobarically-controlled artificial limb for amputees includes a single socket with a volume and shape to receive a substantial portion of the residual limb. A sealed cavity is formed between the socket and the residual limb. The wearer may use a liner over the residual limb for comfort. A vacuum source is connected to a vacuum valve connected to the cavity to suspend the artificial limb from the residual limb and to control and minimize volumetric and fluid changes within the residual limb. A liner for a hypobarically-controlled socket for an artificial limb, with an adhering interface attaching the liner to the inner wall of the socket and forming a seal between the liner and the socket. The liner may be permanently attached to the socket.

What is claimed:  
     
         1 . A liner for a hypobarically-controlled socket for an artificial limb, the socket having a volume and shape to receive a substantial portion of an amputee's residual limb with a cavity therebetween, an inner wall, and a partial vacuum in the cavity tending to draw the residual limb into firm contact with the socket, the liner further comprising an adhering interface adapted to sealingly engage the inner wall of the socket, thereby making a seal between the residual limb and the socket to minimize air leakage into the cavity, wherein the adhering interface permanently attaches the liner to the inner wall of the socket.  
     
     
         2 . The liner of  claim 1 , wherein the adhering interface comprises a laminating adhesive.  
     
     
         3 . The liner of  claim 1 , wherein the adhering interface comprises contact cement.  
     
     
         4 . The liner of  claim 1 , wherein the adhering interface comprises a paint-on glue.  
     
     
         5 . The liner of  claim 1 , further comprising non-foamed, non-porous polyurethane.