US 9,844,473 B2Granted

Apparatus for aspirating, irrigating and cleansing wounds

AssigneeSmith & Nephew, Inc.

InventorsPatrick Lewis Blott, Bryan Greener, Edward Yerbury Hartwell, Tina Michelle Walker, Derek Nicolini, Julian Lee-Webb

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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.

Claims18

Dependent claims

An apparatus for treating a wound, comprising:

a wound dressing comprising:
a backing layer having a proximal, wound-facing side and a distal side;
a boss mounted to the backing layer at an opening in the backing layer and protruding distally therefrom;
a porous material having a proximal, wound-facing side and a distal side, the porous material provided on the proximal side of the backing layer;
an adhesive on a periphery of the backing layer, wherein the adhesive is configured to attach the backing layer to skin around the wound;
and
a membrane provided on the proximal, wound-facing side of the porous material, the membrane comprising a plurality of apertures configured to contact the wound, wherein the porous material is configured to be in fluid communication with the membrane;
and
a first manifold provided on the proximal, wound-facing side of the porous material, wherein the first manifold is configured to be in communication with a distal side of the membrane;
a fluid offtake tube configured to be mounted to the boss and provide fluid communication between a negative pressure source and the wound dressing.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/584,274Filed 29 Dec 2014 · continuation
Priority: GB 0224986.028 Oct 2002
Published: US 2015/0080787 A130 Jul 2015
Granted: 19 Dec 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

A61F 13/05
Bandages or dressings ; Absorbent pads: specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation,…
A61F 13/00063
Accessories for dressings: comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic
A61F 13/512
Topsheet, i.e. the permeable cover or layer facing the skin: characterised by its apertures, e.g. perforations
A61M 1/74
Suction drainage systems: suction control

Family

PCT/GB03/04647Parent of this continuation · filed 28 Oct 2003
Application12/416,829Parent of this division · filed 1 Apr 2009
US 7,524,315 B2Parent of this continuation · filed 28 Apr 2009
Application13/363,320Parent of this continuation · filed 31 Jan 2012
US 8,398,614 B2Parent of this division · filed 19 Mar 2013
Application14/485,633Parent of this continuation · filed 12 Sep 2014
US 8,834,451 B2Parent of this continuation · filed 16 Sep 2014
US 2015/0209492 A1Pre-grant publication · published 30 Jul 2015
US 9,205,001 B2Parent of this continuation
Application13/363,320Parent of this division
Application10/533,275Parent of this continuation
Application12/416,829Parent of this continuation
US 2006/0155260 A1Published application
US 2009/0254054 A1Published application
US 2011/0087176 A2Published application
US 2012/0130325 A1Published application
US 2015/0080787 A1Published application
US 9,844,473 B2This patent

From the US filing history. Foreign family members aren’t listed.