Patent ID: 7850739
Filing Date: 2010-12-14
Classification: A61F

Abstract:
1. A leg prosthesis comprising: a prosthesis comprising a socket for receiving a residual limb of a user and a prosthetic foot, the socket having a socket distal end and a socket proximal side wall surrounding and defining an interior well receiving the residual limb, and said socket proximal wall having an aperture and an upper extremity edge, the socket having an axial dimension extending between said upper extremity edge and said socket distal end; a roll-on liner having a liner distal end and a liner proximal side wall, said roll-on liner configured to secure to the residual limb by being rolled-on to the residual limb so that the liner snugly covers the entire circumference of the residual limb, and said roll-on liner, when rolled-onto the residual limb, being received in the socket so that the liner proximal wall extends generally parallel to the socket proximal wall; a strap connection system having an extension member anchored at one end to said liner proximal wall at a location below the socket upper extremity, extending axially through said aperture in the socket proximal side wall, extending axially along an outside surface of the socket proximal side wall, and connecting to a lock between said socket distal end and said upper extremity edge of the socket proximal wall, wherein said lock is below said aperture; wherein the prosthesis is suspended from the residual limb by said roll-on liner gripping the residual limb, and said strap connection system holding the socket on said liner, and wherein the prosthesis comprises no belt or strap configured to encircle part of the user's body; and wherein the lock is a buckle having a biasing lever and a base with a ramped top surface against which the biasing lever clamps the extension member.