Reduced-pressure interfaces, systems, and methods employing a Coanda device

摘要

Systems, devices, and methods for treating a wound on a patient involve a reduced-pressure interface having an interface body that facilitates the delivery of reduced pressure to the wound and also a Coanda device that develops an airflow over a wound dressing. The airflow developed by the Coanda device enhances evaporation of liquids from the dressing. Other systems, methods, and devices are presented herein.

主权项

1. A system for treating a wound on a patient, the system comprising:
a wound-interface member; a sealing member for disposing over the wound interface member, wherein the sealing member is formed with a treatment aperture; a reduced-pressure interface coupled to the sealing member, wherein the reduced-pressure interface comprises:
an interface body comprising a conduit port, an access port, and a primary conduit, wherein the primary conduit is in fluid communication with the conduit port and access port for transferring reduced pressure through the interface body and further comprising a base portion, anda Coanda device associated with the interface body, wherein the Coanda device comprises:
an annular nozzle forming a central opening and having an interior passage and a nozzle opening,a Coanda surface positioned proximate to and downstream from the nozzle opening,wherein the Coanda device is positioned with a flow clearance from the base portion of the interface body, whereby fluid exiting the nozzle opening entrains additional fluid from the central opening and produces a combined fluid flow, andwherein the Coanda device is configured to direct the combined fluid flow to create a fluid flow over the sealing member; and a positive-pressure source fluidly coupled to the interior passage of the Coanda device for activating the Coanda device; and a reduced-pressure source fluidly coupled to conduit port for providing reduced pressure to the wound.