Ventilated prosthetic liner
AssigneeOssur Iceland Ehf
InventorsAndri Orrason, Stefan Orn Stefansson, Rowan Cain, Sigurdur Asgeirsson, Jiri Dlab
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Abstract
A prosthetic liner has a ventilated structure communicating with an interior volume to an exterior of the prosthetic liner, thereby permitting a transfer of air and moisture therebetween. The prosthetic liner includes a facing layer defining a periphery of at least part of the interior volume of the liner, and forming a plurality of apertures extending therethrough. A cushion layer is juxtaposed to the facing layer and forms a lattice structure including a plurality of interstices in communication with the apertures of the facing layer.
Claims19
A prosthetic liner defining an open-ended proximal end and a distal end and forming an interior volume, the liner having a body region extending from the proximal end distally toward a distal end area 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 and defines a periphery of the interior volume to encircle the interior volume, 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;
- a distal region including the distal end and forming a distal cup, the distal region securing to the body region such that the distal cup is formed from at least first and second layers chemically bonded to the cushion layer;
- wherein the first layer of the distal cup axially terminates at the facing layer and proximally of the second layer of the distal cup, at least some of the sub-layers of the plurality of sub-layers of the cushion layer extending between the first and second layers of the distal cup;
- wherein the facing layer is formed from an elastomeric material having a lower durometer than at least one material forming the cushion layer and is thinner than the cushion layer;
- wherein the plurality of the apertures terminates at least at the distal cup.
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;
- 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 first and second layers chemically bonded to the cushion layer, the at least first and second layers of the distal region being vapor and moisture impermeable and defined by a solid mass of elastomeric material, the at least first and second layers of the distal region forming a periphery of the interior volume of the prosthetic liner within the distal region;
- wherein the first layer of the distal cup axially terminates at the facing layer and proximally of the second layer of the distal cup, at least some of the sub-layers of the plurality of sub-layers of the cushion layer extending between the first and second layers of the distal cup;
- wherein the cushion layer defines a tapering thickness extending from a distal end of the body region to the proximal end;
- wherein the facing layer has a generally uniform thickness in the body region of the prosthetic liner;
- wherein the distal cup defines a tapering thickness extending from the distal end of the prosthetic liner to the cushion layer.
Dependencies are inferred from the claim text.