US 11,938,045 B2
Breathable residual-limb socket system
Andrew Hansen, Minneapolis, MN (US); Sara Koehler-Mcnicholas, Minneapolis, MN (US); Eric Nickel, Minneapolis, MN (US); Kyle Barrons, Minneapolis, MN (US); Felix Starker, Munich (DE); Spencer Mion, Minneapolis, MN (US); John Ferguson, Minneapolis, MN (US); Stuart Fairhurst, Minneapolis, MN (US); Ellankavi Ramasamy, Munich (DE); Karl Koester, Minneapolis, MN (US); and Urs Schneider, Munich (DE)
Assigned to United States Government As Represented By The Department Of Veterans Affairs, Washington, DC (US); and Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V., Munich (DE)
Filed by United States Government as Represented by the Department of Veterans Affairs, Washington, DC (US); and Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung e. V., Munich (DE)
Filed on Nov. 23, 2022, as Appl. No. 17/993,303.
Application 17/993,303 is a continuation of application No. 16/629,822, abandoned, previously published as PCT/US2018/041519, filed on Jul. 10, 2018.
Claims priority of provisional application 62/530,762, filed on Jul. 10, 2017.
Prior Publication US 2023/0157851 A1, May 25, 2023
Int. Cl. A61F 2/78 (2006.01); A61F 2/50 (2006.01); A61F 2/80 (2006.01); A61F 13/00 (2006.01)
CPC A61F 2/7812 (2013.01) [A61F 2/5044 (2013.01); A61F 2/80 (2013.01); A61F 2002/5055 (2013.01); A61F 2002/7818 (2013.01); A61F 2002/785 (2013.01); A61F 2002/7875 (2013.01); A61F 2013/00097 (2013.01); A61F 2013/00136 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system for use on a residual limb, the system comprising:
a liner sock configured to be worn on and contact the residual limb, the liner sock comprising:
air-permeable textile forming a substantially cylindrical portion that is closed on a distal end and open on a proximal end and comprising an internal surface and an external surface; and
a friction-interface material that covers only a portion of the internal surface of the air-permeable textile, wherein the friction-interface material defines an inner surface of the liner sock such that, when worn on the residual limb, the friction-interface material directly contacts a surface of the residual limb, and an uncovered portion of the air-permeable textile which the friction-interface material does not cover allows air to pass between an external environment of the liner sock and the surface of the residual limb, wherein the friction-interface material comprises a plurality of strips that are spaced from each other to define the uncovered portion of the air-permeable textile therebetween,
wherein the air permeable textile comprises:
a first section comprising unidirectional-stretch textile; and
at least one second section comprising bidirectional-stretch textile,
wherein the first section is fixed to the at least one second section by at least one seam, and
wherein the friction-interface material covers the at least one seam on the internal surface of the air-permeable textile.