Patent ID: 8940057
Filing Date: 2015-01-27
Classification: A61F

Abstract:
1. A tubular casting liner having an open proximal end area and a closed-end distal area, and interior and exterior surfaces, the casting liner forming a cavity delimited by the interior surface, the casting liner adapted to envelop a residual limb, comprising; an outer layer defining first and second surfaces, the first outer layer surface continuously defining at least a portion of the exterior surface of the casting liner, the outer layer having a generally uniform thickness; at least one polymeric layer having first and second surfaces, the at least one polymeric layer first surface secured to the second surface of the outer layer; wherein the ratio of thickness of the at least one polymeric layer at the distal end area relative to the proximal end area is at least 3:1; wherein the thickness of the at least one polymeric layer at the distal end area has a dimension, and the at least one polymeric layer having a thickness above the distal end area with dimensions tapering gradually toward the proximal end area; wherein the outer layer is an elasticized fabric forming an elasticity controlling matrix material that is compliant in a radial direction and substantially rigid or inelastic in an axial direction of the casting liner, an exterior surface outside of the distal end of the liner consists the elasticized fabric; wherein the proximal end area of the liner including the outer layer and the at least one polymeric layer has a thickness of about 1 mm.