Breathable residual-limb socket system

US11938045B2 · kind B2 · utility

Assignees

• United States Government as represented by the Department of Veterans Affairs · US
• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Andrew H. Hansen · Apple Valley, US
• Sara Koehler-Mcnicholas · Minneapolis, US
• Eric Nickel · Brooklyn Park, US
• Kyle Barrons · Minneapolis, US
• Felix Starker · Reykjavík, IS
• Spencer Mion · Minneapolis, US
• John Ferguson · Philadelphia, US
• Stuart Fairhurst · Minneapolis, US
• Ellankavi Ramasamy · Munich, DE
• Karl Koester · Nagold, DE
• Urs Schneider · Munich, DE

Key dates

• Filing date: Nov 23, 2022
• Grant date: Mar 26, 2024
• Expiry date: Nov 23, 2042

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2013/00136
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Breathable residual-limb system that admits air and allows sweat to evaporate from the surface of the residual limb. In an embodiment, the system comprises a liner sock to be worn on the residual limb, and 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. The liner sock further comprises a friction-interface material that covers only a portion of the internal surface of the air-permeable textile, such that, when worn on the residual limb, the friction-interface material 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.