Patent ID: 9623159
Date: 2017-04-18
CPC Classifications: A61M

Claim:
1. An interface for providing a reduced pressure to a dressing, the interface comprising: an interface body having a first side and a second side, the second side adapted to face the dressing; an inlet formed proximate the first side of the interface body, the inlet having a positive-pressure port and a pressure-sensing port; a positive-pressure channel adapted to deliver positive pressure and extending through the interface body from the positive-pressure port to a positive-pressure outlet proximate the first side of the interface body, wherein the positive-pressure channel includes a constricted portion configured to provide a pressure drop; a reduced-pressure channel adapted to deliver the reduced pressure to the dressing, the reduced-pressure channel fluidly coupled between the positive-pressure channel and the second side of the interface body, wherein the reduced pressure substantially corresponds to the pressure drop, and wherein the reduced-pressure channel is fluidly coupled to the positive-pressure channel downstream of the constricted portion and between the constricted portion and the positive-pressure outlet; and a pressure-sensing channel in fluid communication between the pressure-sensing port and the second side of the interface body.