Portable 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 dimensioned to be worn by a user, said canister assembly including;
a control unit having a negative pressure source and a controller; and
a collection canister in communication with the dressing assembly and having a chamber operable to receive fluid from the wound, the collection canister including;
a suction port in fluid communication with said negative pressure source; and
a ball float arrangement having a ball float operable to substantially close said suction port in response to one of collection of a predetermined volume of exudate in the collection canister, tilting of the collection canister beyond a predetermined angle of orientation or inversion of the collection canister.
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Accused Products
Abstract
A portable NPWT 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 ports to introduce a vacuum from the vacuum source into the collection canister. A ball float is provided to substantially close the suction port in response to one of collection of a predetermined volume of exudate in the collection canister, tilting of the collection canister beyond a predetermined angle of orientation or inversion of the collection canister.
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Citations
17 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 dimensioned to be worn by a user, said canister assembly including; a control unit having a negative pressure source and a controller; and a collection canister in communication with the dressing assembly and having a chamber operable to receive fluid from the wound, the collection canister including; a suction port in fluid communication with said negative pressure source; and a ball float arrangement having a ball float operable to substantially close said suction port in response to one of collection of a predetermined volume of exudate in the collection canister, tilting of the collection canister beyond a predetermined angle of orientation or inversion of the collection canister. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. 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 control unit having a negative pressure source and a controller; and a collection canister in communication with the dressing assembly and having a chamber operable to receive fluid from the wound, the collection canister including; a suction port in fluid communication with said negative pressure source; and a closure valve mounted adjacent the suction port, the closure valve adapted to move from an open position where the negative pressure source is capable of drawing a vacuum in the collection canister through the suction port and a closed position where the suction port is substantially closed in response to one of collection of a predetermined volume of exudate in the collection canister, tilting of the collection canister beyond a predetermined angle of orientation or inversion of the collection canister. - View Dependent Claims (14, 15, 16, 17)
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Specification