Patent ID: 7909805
Filing Date: 2011-03-22
Classification: A61F,A61M

Abstract:
1. An appliance for administering reduced pressure treatment to a wound on a body, the appliance comprising: a liquid impermeable flexible overlay having an opening sized to be placed over and enclose the area of the wound to be treated, the overlay adapted to maintain reduced pressure in the volume under the flexible overlay in the area of the wound; and reduced pressure supply means supported at a top portion of the overlay to operably connect the flexible overlay to a reduced pressure supply source that provides a supply of reduced pressure to the flexible overlay, so that the volume under the flexible overlay in the area of the wound to be treated is supplied with reduced pressure by the reduced pressure supply source; wherein: the overlay comprises a plurality of preformed channels formed in or affixed to the overlay extending from the reduced pressure supply means toward the opening to assist in the application of reduced pressure to the area of the wound and removal of exudate from the wound, wherein each of the plurality of preformed channels are joined together near the center of the flexible overlay; and the flexible overlay collapses in the approximate direction of the area of the wound to be treated when reduced pressure is supplied to the volume under the flexible overlay in the area of the wound, such collapse causing the formation of an approximately hermetic seal between the flexible overlay and the body in the area of the wound.