Patent ID: 8663199

Claim:
A wound treatment apparatus comprising: a porous dressing; a canister in fluid communication with the porous dressing; a first valve having an open and close position in fluid communication between the porous dressing and the canister and operable to allow fluid flow between the canister and the porous dressing in the open position, and further being operable to prevent fluid flow between the porous dressing and the canister in the closed position; a disposal line fluidly connected to the canister; a second valve having an open and close position in fluid communication within the disposal line and operable to allow fluid flow through the disposal line in the open position when the first valve is in the closed position, and further being operable to prevent fluid flow through the disposal line in the closed position when the first valve is in the open position; and a pump in fluid communication with the canister and operable to draw fluid from the porous dressing into the canister when the first valve is open and the second valve is closed, the pump further being operable to force fluid from the canister into the disposal line when the first valve is closed and the second valve is open.