Patent ID: 8294586

Claim:
A method of indicating status of at least one operating parameter associated with a topical negative pressure (TNP) system, comprising the steps of: generating a visual indicator as an illumination from an LED, the visual indicator having at least three characteristics corresponding to a status of at least one operating parameter associated with the TNP system, the at least three characteristics comprising: a first characteristic comprising a first solid color for indicating a first status; a second characteristic comprising a second solid color for indicating a second status, the second solid color different from the first solid color; and a third characteristic comprising a flashing of the first color for indicating a third status, wherein the indicated status comprises at least one of a normal operation, a failed operation and a non-urgent warning, and wherein generating the visual indicator comprises generating the illumination from the LED located in a cavity region of a case of the TNP system via a light-pipe element directing the illumination to a viewing window element visible to a user on an outer surface of the case, the viewing window element comprising a prismed surface.