Reduced-pressure dressings, systems, and methods with evaporative devices

摘要

Wounds dressings, systems, and methods are presented for removing liquid from a wound site into a dressing and moving air through the dressing to evaporate at least a portion of the removed liquid. The air is moved in one instance by a Coanda device incorporated into the dressing. Other systems, dressings, and methods are presented.

主权项

1. A wound treatment system for treating a wound on a patient, the wound treatment system comprising:
a treatment manifold for disposing proximate to the wound, wherein the treatment manifold has a first side and a second, patient-facing side; a first sealing member for disposing over the first side of the treatment manifold and a portion of intact skin to create a sealed space containing the treatment manifold, wherein the first sealing member comprises a high-moisture-vapor-transfer-rate drape; an air-movement manifold having a first side and a second, patient-facing side, wherein the second, patient-facing side is disposed proximate to the first side of the first sealing member; a second sealing member disposed over the first side of the air-movement manifold forming a channel space; at least one port formed on the second sealing member for allowing air to exit the channel space; a reduced-pressure source for producing reduced pressure, wherein the reduced-pressure source is fluidly coupled to the sealed space for delivering reduced pressure thereto; a pressure source; a Coanda device coupled to the second sealing member and fluidly coupled to the pressure source and to the channel space, wherein the Coanda device comprises:
an annular nozzle forming a central opening and having an interior passage and a nozzle opening, anda Coanda surface proximate to and downstream from the nozzle opening, whereby fluid exiting the nozzle opening entrains additional fluid from the central opening and produces a combined fluid flow; and wherein the Coanda device is fluidly coupled to a Coanda opening in the second sealing member.