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EP-3708196-B1 - DRESSING KIT FOR REDUCED PRESSURE WOUND THERAPY

EP3708196B1EP 3708196 B1EP3708196 B1EP 3708196B1EP-3708196-B1

Inventors

  • ASKEM, Ben, Alan
  • WALSH, PHILIP
  • BINDER, IAN
  • COLLINSON, SARAH, JENNY
  • COWAN-HUGHES, JOHN
  • FRYER, CHRISTOPHER, JOHN
  • MOY, Tom
  • MULLEN, PAUL
  • NICOLINI, DEREK
  • PRYOR, NEIL

Dates

Publication Date
20260506
Application Date
20130312

Claims (16)

  1. A wound dressing kit for negative pressure therapy, comprising: a pump assembly (52, 92, 114, 132); a power source (56, 94, 112, 136) including one or more batteries; a dressing member (54, 96, 110, 138) supporting the pump assembly (52, 92, 114, 132) and the power source (56, 94, 112, 136) such that the pump assembly (52, 92, 114, 132) and power source (56, 94, 112, 136) is on-board the dressing member (54, 96, 110, 138), wherein the dressing member (54, 96, 110, 138) comprises a wound contact surface covered with an adhesive to permit the repositionability of the dressing member (54, 96, 110, 138); and a control board and/or user interface positioned on the dressing member (54, 96, 110, 138); characterized by an indicator light supported by or embedded within the dressing member (54, 96, 110, 138) configured to provide a visual indication of one or more of the operating parameters of the dressing member (54, 96, 110, 138), pump assembly (52, 92, 114, 132) or batteries.
  2. The wound dressing kit of claim 1, wherein the dressing member (54, 96, 110, 138) further comprises a film having a high water vapour permeability to enable the evaporation of surplus fluid from the dressing member (54, 96, 110, 138) and a superabsorbing material contained therein to absorb wound exudate.
  3. The wound dressing kit of any preceding claim, wherein the adhesive covering the wound contact surface is a silicone based adhesive.
  4. The wound dressing kit of any preceding claim, wherein the control board is a flexible circuit board.
  5. The wound dressing kit of any preceding claim, wherein the dressing member (54, 96, 110, 138) supports a panel of lights configured to pulse or flash to provide a variety of signals regarding a variety of conditions to a user.
  6. The wound dressing kit of any of claims 1 to 5, wherein the dressing member (54, 96, 110, 138) supports a panel of lights configured to provide an indication of a level of power in the power source (56, 94, 112, 136).
  7. The wound dressing kit of claim 1, wherein the dressing member (54, 96, 110, 138) comprises a flexible porous or perforated wound contact layer.
  8. The wound dressing kit of claim 7, wherein the wound contact layer comprises perforations formed as slits or holes having a size ranging from approximately 0.025 mm to approximately 1.8 mm.
  9. The wound dressing kit of claim 7 or claim 8, further comprising a gas impermeable, but moisture vapour permeable cover layer extending across the width of the dressing member (54, 96, 110, 138).
  10. The wound dressing kit of any one of claims 7 to claim 9, further comprising a transmission layer located above the wound contact layer wherein said transmission layer is configured to ensure that an open air channel is maintained to communicate negative pressure over a wound area and optionally wherein the transmission layer comprises a knitted or woven spacer fabric.
  11. The wound dressing kit of any preceding claim, wherein the pump assembly (52, 92, 114, 132) is embedded within, supported on top of or adjacent to one or more absorbent layers of the dressing member (54, 96, 110, 138).
  12. The wound dressing kit of any preceding claim, wherein the dressing member (54, 96, 110, 138) comprises one or more filters or valves upstream of the pump assembly (52, 92, 114, 132) configured to prevent liquids and solids from entering the pump assembly (52, 92, 114, 132), but permitting the flow of air or gas through the filter or valve.
  13. The wound dressing kit of any preceding claim, wherein the pump assembly (52, 92, 114, 132) is configured to maintain reduced pressure in the wound site between approximately 60 mmHg and approximately 130 mmHg.
  14. The wound dressing kit of any preceding claim, wherein the pump assembly (52, 92, 114, 132) is programmed to automatically terminate therapy after a predetermined number of days following which further operation of the pump assembly (52, 92, 114, 132) is not possible.
  15. The wound dressing kit of any preceding claim, wherein the user interface includes one or more of operation buttons, visual displays, alarms and indicator lights.
  16. The wound dressing kit of any preceding claim, wherein the apparatus comprises one or more buttons supported by the dressing member (54, 96, 110, 138) and optionally wherein the one or more buttons are fixed to a backing layer of the dressing member (54, 96, 110, 138) and positioned near an edge portion of the dressing member (54, 96, 110, 138).

Description

This application claims priority benefit of U.S. Patent Application No. 61/609,905 filed March 12, 2012, titled REDUCED PRESSURE APPARATUS AND METHODS. The benefit of priority is claimed under the appropriate legal basis including, without limitation, under 35 U.S.C. § 119(e). Additionally, further components and details of wound dressings, wound treatment apparatuses, and negative pressure wound treatment methods that may be used with any of the embodiments disclosed in this application are found in the following applications and/or patents: U.S. Patent Application Publication No. 2011/0282309 (Serial No. 13/092,042), (titled WOUND DRESSING AND METHOD OF USE), filed on April 21, 2011; PCT Patent Application Publication No. WO 2011/087871 (International Patent Application No. PCT/US2010/061938), (titled APPARATUS AND METHODS FOR NEGATIVE PRESSURE WOUND THERAPY), filed internationally on December 22, 2010; U.S. Patent Publication No. 2009/0123513 (Serial No. 11/922,894) (titled ANTIMICROBIAL BIGUANIDE METAL COMPLEXES), filed on May 21, 2008; PCT Patent Publication No. WO/2011/135284 (International Patent Application No. PCT/GB11/000622) (titled WOUND DRESSING), filed internationally on April 21, 2011; PCT Patent Publication No. WO/2011/144888 (International Patent Application No. PCT/GB11/000621) (titled WOUND PROTECTION), filed internationally on April 21, 2011; PCT Patent Publication No. WO/2011/135285 (International Patent Application No. PCT/GB 11/000625) (titled WOUND DRESSING), filed internationally on April 21, 2011; PCT Patent Publication No. WO/2011/135286 (International Patent Application No. PCT/GB11/000626) (titled MULTIPORT DRESSING), filed internationally on April 21, 2011; PCT Patent Publication No. WO/2011/135287 (International Patent Application No. PCT/GB 11/000628) (titled SUCTION PORT), filed internationally on April 21, 2011; PCT Patent Publication No. WO/2012/038724 (International Patent Application No. PCT/GB11/051745) (titled PRESSURE CONTROL APPARATUS), filed internationally on September 16, 2011: U.S. Patent Application No. 13/287,897 (titled "REDUCED PRESSURE THERAPY APPARATUSES AND METHODS OF USING SAME,), filed on November 2, 2011; and U.S. Patent Application Publication No. 2012/0136325 (Serial No. 13/287,959), (titled SYSTEMS AND METHODS FOR CONTROLLING OPERATION OF A REDUCED PRESSURE THERAPY SYSTEM), filed on November 2, 2011. BACKGROUND OF THE INVENTION Field of the Invention Embodiments disclosed herein relate to apparatuses for dressing and treating a wound with topical negative pressure (TNP) therapy, namely dressing kits for TNP. The invention is defined by the appended claims. Specifically, the invention relates to a wound dressing kit for negative pressure therapy. Embodiments falling outside the scope of the appended claims are provided for understanding of the invention only. Description of the Related Art Many different types of wound dressings are known for aiding in the healing process of a human or animal. These different types of wound dressings include many different types of materials and layers, for example, gauze, pads, foam pads or multi-layer wound dressings. Topical negative pressure ("TNP") therapy, sometimes referred to as vacuum assisted closure, negative pressure wound therapy, or reduced pressure wound therapy, is widely recognized as a beneficial mechanism for improving the healing rate of a wound. Such therapy is applicable to a broad range of wounds such as incisional wounds, open wounds and abdominal wounds or the like. TNP therapy assists in the closure and healing of wounds by reducing tissue oedema; encouraging blood flow; stimulating the formation of granulation tissue; removing excess exudates and may reduce bacterial load and thus, infection to the wound. Furthermore, TNP therapy permits less outside disturbance of the wound and promotes more rapid healing. US 2011/112492 A1 discloses a composite wound dressing apparatus that promotes healing of a wound via the use of a micropump system. The micropump system includes a micropump that applies a subatmospheric pressure to the wound to effectively draw wound fluid or exudate away from the wound bed, or deliver fluids to the wound bed, without the need for a cumbersome external pressure (e.g. vacuum) source. US 2011/106030 A1 discloses medical dressings include one or more normally-closed valves, and may include stand-off elements, barrier elements, closure elements, and septum elements. Medical dressing kits may further include pumps, fluid traps, and/or fittings. US 2010/174250 A1 discloses reduced pressure wound therapy performed on a sacral region of a patient using an adhesive dressing comprising a flexible planar layer and a non-planar fold-sealing region configured to seal to the intergluteal cleft of a patient. The fold-sealing region is located on an outer edge of the adhesive dressing and comprises a tapered configuration. SUMMARY OF SOME EMBODIMENTS The invention is defined by the fea