Orientation independent canister for a negative pressure wound therapy device

A portable negative pressure wound therapy system comprising:

• a collection canister configured to be in communication with a dressing and configured to receive fluid removed from a wound, the collection canister comprising:
• a first chamber comprising an inlet port configured to be in fluid communication with the dressing and further configured to allow fluid removed from the wound to flow into the first chamber, wherein the first chamber comprises a plurality of walls;
• and
• a second chamber comprising a plurality of passageways or channels, the second chamber comprising a negative pressure port configured to be in fluid communication with a negative pressure source, the second chamber comprising a plurality of walls and a plurality of filters in fluid communication with the negative pressure port;
• wherein the second chamber comprises a first passageway and second passageway from the plurality of passageways or channels, wherein the first and second passageway are configured to allow fluid communication between the first chamber and the second chamber, the first and second passageways located on different walls of the first chamber;
• wherein the first chamber comprises a first filter and a second filter from the plurality of filters, wherein the first and second filters are located on different walls of the first chamber;
• and
• wherein the first and second passageways are configured to impart negative pressure to the first chamber in the event one of the first or second passageway becomes occluded such that when one of the first or second passageways becomes occluded, negative pressure is applied to the first chamber through the other passageway.