Abstract: A wound healing system comprising an array of electrodes incorporated in a device for applying an electrical signal to a wound. The electrodes are configurable to form at least one composite electrode and the electrical signal is applied to the wound via the composite electrode(s). The system preferably includes means for determining the state of the wound, the electrode composition of the composite electrode(s) depending on the determined state of the wound. Advantageously, the electrode composition of the composite electrode(s) is adjustable in response to changes in the determined state of the wound.

Abstract: A flexible biomedical surface electrode comprises an insulating substrate (10), a conductive electrode layer (12) screen-printed on the substrate, and an insulating masking layer (14) on the electrode layer. The masking layer is configured to expose selected regions (16) of the electrode layer. An electrically conductive adhesive gel layer (18) on the masking layer makes electrical contact with the exposed regions of the electrode layer.

Abstract: A tissue mapping system comprising a two dimensional array of test electrodes 10 for application to the surface of tissue under investigation and circuit means 50-66 for measuring an electrical characteristic of the tissue underlying each test electrode. In one embodiment the electrical characteristics is the impedance of the tissue underlying each test electrode.

Abstract: A wound healing system comprising an array of electrodes incorporated in a device for applying an electrical signal to a wound. The electrodes are configurable to form at least one composite electrode and the electrical signal is applied to the wound via the composite electrode(s). The system preferably includes means for determining the state of the wound, the electrode composition of the composite electrode(s) depending on the determined state of the wound. Advantageously, the electrode composition of the composite electrode(s) is adjustable in response to changes in the determined state of the wound.

Abstract: A flexible biomedical surface electrode comprises an insulating substrate (10), a conductive electrode layer (12) screen-printed on the substrate, and an insulating masking layer (14) on the electrode layer. The masking layer is configured to expose selected regions (16) of the electrode layer. An electrically conductive adhesive gel layer (18) on the masking layer makes electrical contact with the exposed regions of the electrode layer.

Abstract: The electrode comprises a) a layer (5) which conducts electricity for the supply or the collection of an electrical current traversing the electrode, and b) a consumable electrochemical interface layer (7). According to the invention, it comprises, in addition, an intermediate layer (6) made of a chemically inert and electrically resistant material. This layer can consist of a dispersion of fine particles of carbon in a polymer binder. Application in the preparation of electrodes with increased electrochemical capacity, for an ionophoresis device for the transdermal administration of drugs or a device for the electrocicatrization of wounds.

Abstract: A method for the modification of a surface of a silver electrode wherein the surface is treated with a chlorine plasma is described. Control of the power, flux density and timing provide the manner to modify the silver surface, and so implant the chlorine atoms and ions into the silver. The present invention provides a method to produce thin-film silver electrodes with a very controlled surface. Such electrodes can provide quantitative quality of measurement. The present invention extends to a method for the modification of a surface of any metal wherein the surface is treated with a plasma.

Abstract: The present invention is based on our surprising finding that, by selection of the appropriate sheet resistance of the current distribution member in conjunction with a suitably low impedance at the interface between the current distribution member (2) and the adhesive substrate (4), the incidence of peripheral hot spots and edge effects associated with high current density can be substantially reduced.

Abstract: A biosignal electrode device comprises a flexible electrically insulating substrate 11 having deposited thereon an electrically conductive layer forming an electrode sensor 14 and a lead 15 for the sensor. The portion of the substrate bearing the sensor is formed in relief such that the sensor stands above the surrounding substrate.

Abstract: A biomedical electrode device comprises an electrically insulating substrate carrying an electrode. The electrode is coated with a moisture-activated electrically conductive bioadhesive layer having an adhesion of between 50 and 500 g/cm.sup.2 and a water content of less than 25% w/w.