Apparatus for aspirating, irrigating and cleansing wounds
AssigneeSmith & Nephew, Inc.
InventorsPatrick Blott, Bryan Greener, Edward Hartwell, Tina Walker
Life of this patent
Estimating the term…
Abstract
An apparatus for cleansing wounds in which irrigant fluid from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are recirculated by a device for moving fluid through a flow path which passes through the dressing and a means for fluid cleansing and back to the dressing. The cleansing means (which may be a single-phase, e.g. microfiltration, system or a two-phase, e.g. dialytic system) removes materials deleterious to wound healing, and the cleansed fluid, still containing materials that are beneficial in promoting wound healing, is returned to the wound bed. The dressing and a method of treatment using the apparatus.
Claims67
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
An apparatus for treating a wound on a body with negative pressure, comprising:
- a substantially liquid impermeable backing layer capable of forming a relatively fluid-tight seal or closure over a wound;
- a manifold member formed from a liquid impervious material positionable beneath the backing layer, the manifold member comprising:
- a plurality of separate, flexible flow channels extending in a radial direction away from a middle portion of the manifold member;
- and
- at least one opening formed in each of the flow channels, the openings being in communication with the flow channels and the wound so that negative pressure can be communicated through the flow channels and the openings to the wound and so that liquid can be removed from the wound through the flow channels;
- foam positionable beneath the backing layer;
- and
- an outlet conduit having an end portion mounted adjacent to a center portion of the backing layer.
An apparatus for treating a wound on a body with negative pressure, comprising:
- a substantially liquid impermeable backing layer capable of forming a relatively fluid-tight seal or closure over a wound;
- a manifold member positionable beneath the backing layer comprising a substantially planar flexible first layer and a substantially planar flexible second layer, wherein at least portion of a periphery of the first layer is sealable to at least a portion of a periphery of the second layer and the first layer is configured to be positionable substantially in contact with a surface of the body, the manifold member comprising a plurality of flow channels wherein the channels are interconnected only at a center portion of the manifold member and the channels each extend in a radial direction from the center portion of the manifold member;
- foam positionable between the backing layer and the manifold member;
- a plurality of apertures formed in the first layer, the apertures being in communication with the flow channels;
- a fluid pathway through at least a portion of the apparatus configured to channel at least fluid removed from the wound during operation of the apparatus to a waste canister;
- and
- an outlet conduit in fluid communication with the fluid pathway and adapted to receive a supply of negative pressure.
An apparatus for treating a wound with negative pressure, comprising:
- a substantially liquid impermeable backing layer capable of forming a relatively fluid-tight seal or closure over a wound;
- and
- a manifold member positionable beneath the backing layer, the manifold member having a plurality of separate flow channels radiating from a middle portion of the manifold member, wherein the flow channels each have at least one opening therein, the openings being in communication with the flow channels and the wound so that negative pressure can be communicated through the flow channels and the openings to the wound and so that liquid can be removed from the wound through the flow channels.
A method of treating a wound, comprising:
- positioning a manifold member in a wound bed, the manifold member having a plurality of flow channels radiating from a middle portion of the manifold member such that the flow channels are interconnected only in the middle portion of the manifold member;
- positioning a substantially liquid impermeable backing layer over the manifold member and the wound bed;
- forming a relatively fluid-tight seal between the backing layer and healthy skin surrounding the wound;
- supplying negative pressure to at least the manifold member;
- and
- removing fluid from the wound through the flow channels of the manifold.
An apparatus for treatment of a wound, comprising:
- a substantially liquid impermeable backing layer capable of forming a relatively fluid-tight seal or closure over a wound;
- a manifold member positionable beneath the backing layer comprising a substantially planar flexible first layer and a substantially planar flexible second layer in communication with the first layer, wherein at least a periphery of the first layer is in contact with a periphery of the second layer;
- a chamber defined between the first and second layers and bounded by the periphery of the first and second layers;
- and
- a plurality of apertures formed in the first layer, the apertures being in communication with said chamber, wherein the wound dressing is adapted to receive a supply of negative pressure.
An apparatus for treating a wound with negative pressure, comprising:
- a substantially liquid impermeable backing layer capable of forming a relatively fluid-tight seal or closure over a wound;
- and
- a member comprising a plurality of flow channels positionable beneath the backing layer;
- wherein:
- the channels are interconnected only at a center portion of the member;
- and
- the channels each extend in a radial direction from the center portion of the member.
A method of treating a wound, comprising:
- positioning a member comprising a plurality of flow channels over a wound, the plurality of flow channels defined between a flexible first layer and a flexible second layer, wherein at least a portion of the periphery of the first layer is in contact with a portion of the periphery of the second layer, wherein the channels are interconnected only at a center portion of the member, and the channels each extend in a radial direction from the center portion of the member;
- positioning a substantially liquid impermeable backing layer over the plurality of flow channels and over the wound;
- forming a relatively fluid-tight seal or closure between the backing layer and healthy skin surrounding the wound;
- and
- channeling fluid through the flow channels.
Dependencies are inferred from the claim text.