Patent ID: 11883306
Assignee: OSSUR ICELAND EHF
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. A prosthetic liner defining a proximal end and a distal end and forming an interior volume, the prosthetic liner having a body region extending from the proximal end distally toward the distal end along an axis, the prosthetic liner comprising:
a cushion layer located at least within the body region and forming a predetermined lattice structure including a plurality of sub-layers forming a plurality of interstices therebetween, the cushion layer defining a first surface oriented toward the interior volume and a second surface opposite the first surface;
a facing layer located along the first surface of the cushion layer, the facing layer forming a predetermined pattern defining a plurality of apertures extending through a thickness of the facing layer, the plurality of apertures communicating with the plurality of interstices to permit a transfer of air and moisture from the interior volume of the prosthetic liner through the facing layer and the cushion layer; and
a distal region forming a distal cup, the distal region securing to the body region such that the distal cup is formed from at least one layer chemically bonded to the cushion layer, wherein the at least one layer of the distal region being vapor and moisture impermeable and defined by a solid mass of elastomeric material;
wherein the plurality of sub-layers includes a first sub-layer formed by a first plurality of filaments oriented in a first direction forming part of a thickness of the cushion layer, each of the filaments of the first plurality of filaments being spaced apart from one another; wherein the plurality of sub-layers includes a second sub-layer formed from a second plurality of filaments oriented in a second direction different from the first direction and forming part of the thickness of the cushion layer, each of the filaments of the second plurality of filaments being spaced apart from one another;
wherein the first and second plurality of filaments are chemically and integrally bonded to one another without an adhesive and are directly adjacent to one another, such that clearances between each of the filaments in the first and second plurality of filaments form said interstices;
wherein the cushion layer defines a tapering thickness extending from a distal end of the body region to the proximal end, the tapering thickness comprising the first sub-layer and an omission of the second sub-layer at the proximal end.