US 12,257,180 B2
Hypothermic treatment sack
Micah Pryor, Taylors, SC (US); and Ian Dunbar, Zavalla, TX (US)
Assigned to NORTH AMERICAN RESCUE, LLC, Greer, SC (US)
Filed by North American Rescue, LLC, Greer, SC (US)
Filed on Nov. 19, 2021, as Appl. No. 17/531,680.
Prior Publication US 2023/0157865 A1, May 25, 2023
Int. Cl. A61F 7/00 (2006.01)
CPC A61F 7/0097 (2013.01) [A61F 2007/0002 (2013.01); A61F 2007/0018 (2013.01); A61F 2007/0039 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hypothermia treatment sack comprising:
a top sheet defining a first outer perimeter; and
a bottom sheet defining a second outer perimeter, the first outer perimeter of the top sheet removably coupled to the second outer perimeter of the bottom sheet such that a patient receiving cavity is defined between the top sheet and the bottom sheet, wherein the top sheet and the bottom sheet comprise:
a weather resistant external layer provided as an outermost layer to prevent wind and water from passing through the outermost layer;
a heat reflective interior layer comprising aluminized polyester; and
an insulation layer enclosed between the weather resistant external layer and the heat reflective interior layer, wherein the insulation layer is formed of a continuous filament polyester that is hydrophobic, and wherein the insulation layer defines a ratio of R-value and specific weight of between about 0.3 and about 0.7.