First Water Limited

Edixomed Limited

University of London

Carefusion 2200, Inc.

Nicholas David Boote

Hugh Semple Munro

Scott A Tufts

Arthur Tudor Tucker

Jesus Flores

Christopher Barry Wood

Joanne Ellen Stewart

Michael J Baltezor

Moises Ortiz

Jennifer Raeder Devens

The present invention relates to skin dressings that are useful in the treatment of conditions associated with tissue ischaemia and skin lesions including those that are infected, such as burns and surgical wounds and chronic wounds such as but not limited5 to diabetic foot ulcers and venous leg ulcers. The skin dressings are also useful to effect transdermal delivery of pharmaceutically active agents.

Dressing system

The present invention provides a system comprising: (i) a layer containing a nitrite; and (ii) a hydrogel that contains hydrogen ions; wherein the layer containing a nitrite and/or the hydrogel comprises a pharmaceutically active agent. The invention also provides the use of a system of the invention in medicine, and in the treatment of pain.

Transdermal delivery system

The present invention provides a system comprising: (i) a layer containing a nitrite; and (ii) a hydrogel that contains hydrogen ions. The invention also provides the use of a system of the invention for the treatment of a condition associated with tissue ischaemia or a wound and the use of a system of the invention in combination with an anaesthetic for the treatment or prevention of pain.

The present invention provides a hydrogel composition, preferably for the treatment of wounds, comprising a hydrophilic co-polymer carrying multiple pendant anionic groups, wherein the polymer is derived from a first monomer and a second monomer, wherein both monomers have an octanol:water partition coefficient LogP value of less than 0, and, the LogP value of the first monomer is greater (more positive) than the second monomer. The difference between the LogP value for the two monomers is preferably less than 2. The weight ratio (w/w) of the first monomer/second monomer in the hydrogel composition is preferably equal to or more than about 1. The pendant anionic groups may be sulphonyl groups, e.g. sulphonic acid groups or salts thereof. The anionic group in both first and second monomers may be in salt form and the counterion for both monomers is preferably the same.

Hydrogel composition based on co-polymer carrying multiple pendant sulphonic groups for use as a wound dressing

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Wiltshire, United Kingdom

Nicholas David Boote