US 11,883,306 B2
Ventilated prosthetic liner
Andri Orrason, Reykjavik (IS); Stefan Orn Stefansson, Reykjavik (IS); Rowan Cain, Reykjavik (IS); Sigurdur Asgeirsson, Foothill Ranch, CA (US); and Jiri Dlab, Foothill Ranch, CA (US)
Assigned to Ossur Iceland ehf, Reykjavik (IS)
Filed by Ossur Iceland ehf, Reykjavik (IS)
Filed on Nov. 12, 2020, as Appl. No. 17/096,186.
Claims priority of provisional application 62/934,261, filed on Nov. 12, 2019.
Prior Publication US 2021/0137708 A1, May 13, 2021
Int. Cl. A61F 2/78 (2006.01); A61F 2/80 (2006.01); A61F 2/50 (2006.01)
CPC A61F 2/7812 (2013.01) [A61F 2002/5007 (2013.01); A61F 2002/785 (2013.01); A61F 2002/7818 (2013.01); A61F 2002/7837 (2013.01); A61F 2002/802 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A prosthetic liner defining a 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, 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, the elastomeric material being a curing material that is sufficiently fluid to blend with the cushion layer at an interface thereof;
wherein the cushion layer defines a tapering thickness extending from a distal end of the body region to the proximal end.