Casting liner, and method and kit for using the same

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 and consisting an elasticized fabric defining an elasticity controlling matrix, the first outer layer surface continuously defining at least a portion of the exterior surface of the casting liner;
• 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 casting liner has a substantially straight profile, wherein a diameter d1 of the liner whereat the distal end area begins to transition to close-ended form is the same or substantially the same as a diameter d2 at the proximal end area;
• wherein the casting liner defines a mid-section area located between the proximal and distal end areas, the ratio of thickness of the at least one polymeric layer at the mid-section area relative to the proximal end area is 2:1;
• 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.

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 consisting an elasticized fabric defining an elasticity controlling matrix material compliant in a radial direction and substantially rigid or inelastic in an axial direction of the casting liner;
• a first continuous polymeric layer having first and second surfaces, the first polymeric layer first surface bonded to the second surface of the outer layer defining an interior surface, the first polymeric layer having a thickness less than the outer layer, the first polymeric layer and the outer layer having a uniform thickness;
• and
• a second continuous polymeric layer having first and second surfaces, the second first layer surface being contiguous and integrally secured to the first layer second surface, the second polymeric layer being thicker than the first polymeric layer, the second layer surface forming the interior surface as a continuously smooth surface
• wherein the ratio of thickness of the second polymeric layer at the distal end area relative to the proximal end area is at least 3:1;
• 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.