Orientation independent canister for a negative pressure wound therapy device
First Claim
1. A portable negative pressure wound therapy system comprising:
- a dressing assembly for positioning over a wound to apply a negative pressure to the wound; and
a canister assembly including;
a vacuum source; and
a collection canister in communication with the dressing assembly operable to receive fluid from the wound, the collection canister including;
a chamber operable to receive fluid from the wound;
a filter assembly having a first filter and a second filter at respective opposing ends of said chamber;
a first passageway defined between said first filter and a first wall of said collection canister;
a second passageway defined between said second filter and a second wall of said collection canister; and
a canister interface having a suction port fluidly connecting the chamber to the vacuum source, an inlet port fluidly connecting the chamber to the dressing assembly, and a channel at least partially defined by a surface of the canister interface,wherein said first filter is configured to prevent fluid from entering said first passageway while allowing gas to pass therethrough and said second filter is configured to prevent fluid from entering said second passageway while allowing gas to pass therethrough.
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Accused Products
Abstract
A portable negative pressure wound therapy system includes a dressing assembly for positioning over a wound to apply a negative pressure to the wound and a canister assembly. The canister assembly includes a control unit having a vacuum source and a controller and a collection canister in communication with the dressing assembly operable to receive fluid from the wound. The collection canister has a filter assembly having a filter and a passageway between the filter and a wall of the collection canister. The collection canister also includes a canister interface having a suction port, an inlet port, and a channel. The vacuum source draws air through the suction port from the channel which draws air from the passageway connected to the channel, the air in the passageway is drawn from the collection canister through the filter, and the air in the collection canister is drawn through the inlet port.
480 Citations
6 Claims
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1. A portable negative pressure wound therapy system comprising:
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a dressing assembly for positioning over a wound to apply a negative pressure to the wound; and a canister assembly including; a vacuum source; and a collection canister in communication with the dressing assembly operable to receive fluid from the wound, the collection canister including; a chamber operable to receive fluid from the wound; a filter assembly having a first filter and a second filter at respective opposing ends of said chamber; a first passageway defined between said first filter and a first wall of said collection canister; a second passageway defined between said second filter and a second wall of said collection canister; and a canister interface having a suction port fluidly connecting the chamber to the vacuum source, an inlet port fluidly connecting the chamber to the dressing assembly, and a channel at least partially defined by a surface of the canister interface, wherein said first filter is configured to prevent fluid from entering said first passageway while allowing gas to pass therethrough and said second filter is configured to prevent fluid from entering said second passageway while allowing gas to pass therethrough. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification