Patent ID: 8535389
Filing Date: 2013-09-17
Classification: A61F

Abstract:
1. A liner for a socket of a prosthetic limb which is to be attached to a residual limb having at least one surface area unsuitable for application of vacuum pressure, the liner comprising: a shaped-layer comprised of one of either a silicone or a urethane and having an exterior surface, an interior surface and a passage therein which opens at each of the two surfaces; a first porous fabric covering at least a portion of the exterior surface of the shaped-layer including covering the corresponding opening of the passage; and a second porous fabric which directly contacts the residual limb during use, the second porous fabric covering the interior surface of the shaped-layer including covering the corresponding opening of the passage wherein the second porous fabric includes at least one cut-out portion which corresponds to the at least one surface area of the residual limb unsuitable for application of vacuum pressure; wherein, during use a negative pressure is maintained across the portion of the exterior surface covered by the first porous fabric and the interior surface covered by the second porous fabric excluding the cut-out portion when a vacuum source is coupled to the passage of the shaped-layer.