Patent ID: 9700481
Date: 2017-07-11
CPC Classifications: A61H

Claim:
1. A deep vein thrombosis prevention garment, comprising: a first panel having an expandable bladder positioned inside an air chamber, the expandable bladder being configured to receive-air from a flexible air supply tube in fluid communication with the expandable bladder; a cover having a perimeter positioned over said air chamber to capture said air chamber between said first panel and said cover; a fastener configured to fasten a first side of the deep vein thrombosis prevention garment to a second side of the garment, wherein an aperture is formed in said air chamber; and a continuous membrane panel made of a non-woven material covering said aperture and configured for bi-directional air flow through the membrane panel to maintain the air chamber at ambient pressure, wherein a friction reducing layer is located on interior surfaces of the air chamber and/or the expandable bladder is constructed from low friction material, and wherein, in a deflated condition, the expandable bladder occupies less than half of the air chamber and is positioned in only a distal portion of the air chamber and, in an inflated condition, the expandable bladder occupies more than half of the air chamber.