US 11,701,261 B2
Medical device containing a multi-ply knit fabric
Rajib Mondal, Greer, SC (US); Thomas C. Wiles, Easley, SC (US); Petr Valenta, Greer, SC (US); James A Rogers, Greenville, SC (US); Emily W. Michaels, Taylors, SC (US); and Robert D. Miller, Piedmont, SC (US)
Assigned to Milliken & Company, Spartanburg, SC (US)
Filed by Milliken & Company, Spartanburg, SC (US)
Filed on Sep. 24, 2019, as Appl. No. 16/580,417.
Claims priority of provisional application 62/741,305, filed on Oct. 4, 2018.
Prior Publication US 2020/0107962 A1, Apr. 9, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 13/00 (2006.01); A61F 13/04 (2006.01); A61H 9/00 (2006.01); D04B 1/16 (2006.01); D04B 1/22 (2006.01); D04B 21/16 (2006.01); D04B 21/20 (2006.01)
CPC A61F 13/00017 (2013.01) [A61F 13/00029 (2013.01); A61F 13/00063 (2013.01); A61F 13/04 (2013.01); A61H 9/0057 (2013.01); D04B 1/16 (2013.01); D04B 1/22 (2013.01); D04B 21/16 (2013.01); D04B 21/20 (2013.01); D10B 2321/042 (2013.01); D10B 2509/022 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A medical device comprising a device that covers at least a portion of a patient's skin, wherein the device has an inner surface and an outer surface, wherein the inner surface is designed to be in contact with the patient's skin, wherein the inner surface of the device comprises a multi-ply knit fabric having an upper and lower surface and a length and width, wherein the fabric comprises:
a first knit ply comprising a plurality of first yarns, wherein the first knit ply forms the upper surface of the fabric;
a second knit ply comprising a plurality of polytetrafluoroethylene (PTFE) yarns, wherein the PTFE yarns have a density of about 2 to 2.3 g/cm3, a transmission in the IR region of 8-10 μm at least about 40%, and a thermal conductivity of at least about 0.2 W/(m·K), wherein the second knit ply forms the lower surface of the fabric;
wherein the first ply and the second ply integrated through combined portions formed by at least one method selected from the group consisting of interlacing first yarns among the PTFE yarns of the second knit ply, interlacing PTFE yarns among the first yarns of the first knit ply, and interlacing a plurality of third yarns among the first yarns of the first knit ply and the PTFE yarns of the second knit ply; and,
a composition comprising at least one silver ion-containing compound on at least the upper surface of the multi-ply knit fabric;
wherein the multi-ply knit fabric is positioned such that the lower surface of the multi-layer knit fabric is adjacent the patient's skin.