Patent ID: 8791315

Claim:
A system for the treatment of a wound site using negative pressure, the system comprising: a wound contact layer, wherein the wound contact layer is provided with one or more openings for channeling wound exudate and distributing negative pressure; a porous pad comprising: a generally planar shape with a thickness less than a width and a length; a major axis; a minor axis; four quadrants defined by the major and minor axes; a plurality of arcuate outer cuts or perforations extending through at least a portion of the thickness of the pad and having an elliptical shape, the plurality of arcuate outer cuts or perforations comprising four outer cuts each separated from adjacent outer cuts by uncut, unperforated bridge portions wherein an outer cut is located in each of the four quadrants and the bridge portions separating the outer cuts are positioned at opposite ends along the major and minor axes; a plurality of arcuate inner cuts or perforations extending through at least a portion of the thickness of the pad and having an elliptical shape similarly shaped to the plurality of arcuate outer cuts or perforations, the plurality of arcuate outer cuts or perforations surrounding the plurality of arcuate inner cuts or perforations, the plurality of arcuate inner cuts or perforations comprising four inner cuts each separated from adjacent inner cuts by uncut, unperforated bridge portions, wherein an inner cut is located in each of the four quadrants and the bridge portions separating the inner cuts are positioned at opposite ends along the major and minor axes; an upper arcuate cut or perforation and a lower arcuate cut or perforation symmetrically arranged about the minor axis located at opposite ends of the pad, wherein the upper arcuate cut or perforation and the lower arcuate cut or perforation are positioned between the outer cuts or perforations and the inner cuts or perforations, wherein the upper arcuate cut or perforation extends across two quadrants symmetricall about the major axis on a first side of the minor axis, and the lower arcuate cut or perforation extends across two quadrants symmetrically about the major axis on a second side of the minor axis opposite the first side, and wherein the upper arcuate cut or perforation and the lower arcuate cut or perforation have a larger radius of curvature than that of at least a portion of the outer cuts or perforations near the major axis; and wherein the cuts or perforations define at least one pad section configured to be detachable from the pad; a flexible drape configured to be placed over the porous pad; a source of negative pressure; and a conduit configured to transmit negative pressure from the source to the flexible drape.