US 12,004,975 B2
Flexible socket interface
Brandon Sampson, Pine Island, MN (US)
Appl. No. 16/968,558
Filed by DBM, LLC, Rochester, MN (US)
PCT Filed Feb. 7, 2019, PCT No. PCT/US2019/017137
§ 371(c)(1), (2) Date Aug. 7, 2020,
PCT Pub. No. WO2019/157236, PCT Pub. Date Aug. 15, 2019.
Claims priority of provisional application 62/627,491, filed on Feb. 7, 2018.
Prior Publication US 2021/0038410 A1, Feb. 11, 2021
Int. Cl. A61F 2/80 (2006.01); A61F 2/76 (2006.01); A61F 2/78 (2006.01)
CPC A61F 2/80 (2013.01) [A61F 2/76 (2013.01); A61F 2/7812 (2013.01); A61F 2002/802 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An interface for use in a prosthetic limb, comprising:
a layer of interface material custom formed to fit a residual limb of a patient, the interface material having a plurality of perforations therein designed to accommodate a vacuum seal between the residual limb and a socket of a prosthetic limb, the perforations extending inwardly from an outer surface of the interface material to an inner surface;
wherein each perforation has a stepped profile with a plurality of steps, with the cross sectional width of each perforation getting smaller moving away from the inner surface of the interface material toward the outer surface.