Apparatus and method for controlling the negative pressure in a wound
AssigneeMölnlycke Health Care AB
InventorUlf Johannison
Life of this patent
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Abstract
An apparatus is disclosed for treating a wound with negative pressure. The apparatus includes a wound cover, a first pump for providing said negative pressure to the wound, a canister, a first conduit between the wound cover and the canister, a means for measuring the pressure within the canister, and a second conduit which connects the canister with the first pump. A method for controlling the negative pressure in a wound using such an apparatus is also disclosed.
Claims16
An apparatus for treating a wound with negative pressure, said apparatus comprising:
- a wound cover,
- a first pump for providing said negative pressure to the wound,
- a canister,
- a first conduit between the wound cover and the canister, which first conduit connects the wound with the canister,
- means for measuring the pressure within the canister,
- a second conduit which connects the canister with the first pump, and
- a circulating pump that is arranged to transport gas from the canister to the wound region via a third conduit and back to the canister via the first conduit in order to press out a possible liquid column from the first conduit to the canister, wherein the third conduit is positioned between the wound cover and the circulating pump.
An apparatus for treating a wound with negative pressure, said apparatus comprising:
- a wound cover,
- a first pump for providing said negative pressure to the wound,
- a canister,
- a first conduit between the wound cover and the canister, which first conduit connects the wound with the canister,
- means for measuring the pressure within the canister,
- a second conduit which connects the canister with the first pump, and
- a circulating pump that is arranged to transport gas from the canister to the wound region via a third conduit and back to the canister via the first conduit in order to press out a possible liquid column from the first conduit to the canister, wherein the third conduit is positioned between the wound cover and the circulating pump, wherein a first filter is arranged in the canister at an outlet to the second conduit and wherein said filter comprises activated carbon.
A method for controlling the negative pressure in a wound with use of an apparatus for treating wound with negative pressure, comprising:
- using a first pump to create a negative pressure within a canister, which is connected with the wound via a first conduit, and
- measuring the pressure in the canister,
- wherein gas is transported with a circulating pump from the canister towards the wound region via a third conduit that is positioned between the wound cover and the circulating pump, and wherein said gas is further directed to the first conduit and back through the first conduit to the canister for pushing a possible liquid column of wound exudate residing in the first conduit to the canister.
Dependencies are inferred from the claim text.