Dressing apparatus

Abstract

A dressing apparatus for applying both electrical current and negative pressure to a site comprising a fluid flow pathway between a proximal end with a port configured for connecting to a negative pre

Description

The present disclosure relates to a dressing apparatus for offering both negative pressure administering and / or electrical current administering to a site, for example a wound. The benefits of both negative pressure treatment and electrical therapy are known however the administering of the two treatments is often at odds with each other and the practicalities of doing so present many difficulties. It is important to have a dry area between the treatment or application sites or else the electrical current may be dissipated away from the target site, to the incorrect location. In practice on a patient a wound may have liquids and a conductor pad for giving an electrical current treatment may have gel so ensure a good contact surface with a patient or site. Spillage of liquids on a site or patient often happen and should be cleaned up, as any electrical current applied as a treatment may be diverted along any conducting liquid instead of to the tissue, for example wounded tissue, to be treated. Often these surface liquids are more conductive than the tissue to be treated that all or most of the electrical current is leaked away from a site or tissue to be applied with the electrical current, when a surface liquid is present. It is an object of the present invention to address at least some of the problems of the prior art. It is an object of the present invention to provide a means to provide a more practical or efficient manner to administer negative pressure and electrical current in at least one manner. In a first aspect of the invention there is provided a dressing apparatus for applying both electrical current and negative pressure to a site, the dressing apparatus comprising: -a fluid flow pathway between a proximal end comprising a port configured for connecting to a negative pressure source, and a distal end comprising a dressing material, and the said dressing material comprising a cover; -at least two electrode assemblies, each electrode assembly comprising a proximal end and a distal end and an electrical flow pathway between the proximal end and the distal end, the proximal end is configured for connecting to an electrical current source, and the distal end comprising a conductor pad configured for attaching to a site and for conveying electrical current to a site, and wherein a portion of the electrical flow pathway comprises an electrical conductive material or an electrical conductive coated material. In some embodiments the cover of dressing material is over the dressing material. “Over” here may be determined when the longitudinal axis of the dressing material is horizontal and the dressing material is in an orientation for use. In some embodiments, the cover of the dressing material, or dressing material cover, is configured for attaching to a site. A cover may assist in keeping any liquid within a site area in a site area or may help prevent infection or contamination from airborne contaminants. In some embodiments, the conductor pad comprises a cover, a conductor pad cover. In some embodiments the cover of the conductor pad has the same footprint as the conductor pad. In some embodiments the cover of the conductor pad has a footprint greater than the conductor pad. In some embodiments the cover of the conductor pad extends beyond the edges of the conductor pad. In some embodiments the cover of the conductor pad extends beyond the edges of the conductor pad entirely around the circumferential edge of the conductor pad (when the longitudinal axis of conductor pad is horizontal and the conductor pad is in an orientation for use). In some embodiments the conductor pad comprises carbon. The conductor pad and especially when the conductor pad comprises of carbon or the like, is to assist in spreading the electric current over a contact site, for example a user’s skin. Spreading the electrical contact over a larger area versus a small area of for example skin, helps to reduce the risk of electrical burn. In some embodiments the dressing material cover has a larger footprint than the footprint of the dressing material. In some embodiments the dressing material cover protrudes beyond the edge of the dressing material. In some embodiments the dressing material cover protrudes beyond the edge of the dressing material and protrudes beyond completely around the circumference of dressing material, (when the longitudinal axis of the dressing material is horizontal and the dressing material is in an orientation for use). In some embodiments the dressing material cover protrudes horizontally beyond the edge of the dressing material and protrudes beyond completely around the circumference of dressing material, when the longitudinal axis of dressing material is horizontal, and the dressing material is in an orientation for use. In some embodiments the conductor pad cover is larger than the footprint of the conductor pad. In some embodiments the conductor pad cover protrudes beyond the edge of the conductor pad. In some embodiments the conductor pad protrudes beyond the edge of the conductor pad completely around the circumference of the conductor pad. In some embodiments the conductor pad cover protrudes beyond the edge of the conductor pad and protrudes beyond completely around the circumference of conductor pad. In some embodiments the conductor pad material cover protrudes horizontally beyond the edge of the conductor pad and protrudes beyond completely around the circumference of conductor pad, when the longitudinal axis of the conductor pad is horizontal, and the conductor pad is in an orientation for use. Having the cover larger in area than the dressing material and or the respective conductor pad may enable a good hold to the desired site but may also prevent liquid escaping from a site, or from beneath the dressing material or conductor pad. Preventing liquid escaping is important as may cause the electrical current to be leaked to the wrong area and not to the desired site for example tissue or wound. In some embodiments the dressing material is configured to enable contact with a site for example a wound when in use. In some embodiments the dressing material cover is configured for attaching the dressing material to a site. In some embodiments the conductor pad cover is configured for attaching the conductor pad to a site. In some embodiments the cover of the conductor pad or the cover of the dressing material or both the cover of the conductor pad and the cover of the dressing material comprise an adhesive. In some embodiments the adhesive is a hydrogel. In some embodiments a portion of the fluid flow pathway is within a housing or conduit. In some embodiments a conduit surrounds the fluid flow pathway between the proximal end of the fluid flow pathway comprising a port configured for connecting to a negative pressure source and a distal end of the fluid flow pathway comprising a dressing material. In some embodiments a portion of at least of the fluid flow pathway is within a lumen of a conduit. In some embodiments a proximal portion of the fluid flow pathway is within a conduit. In some embodiments a conduit comprises a proximal and distal end, and the conduit is configured to enable a fluid flow pathway between the proximal and distal ends, wherein the proximal end comprises a port configured for connecting to a vacuum source and the distal end comprises a dressing material. It is foreseen that in some embodiments that the fluid flow pathway is within or surrounded by a conduit and that the conduit is attached to a port at the proximal end and to a dressing material at the distal end. Thus, in some embodiments the conduit is configured to enable a fluid flow pathway between the dressing material at the distal end and the port at the proximal end. Thus, in some embodiments a negative pressure may be applied to a site in contact with the dressing material. In some embodiments the conduit or housing or sleeve, of the fluid flow path or electrical flow path is flexible. In some embodiments the conduit or housing or sleeve comprises plastic. Advantageously a conduit or housing or sleeve of plastic may give a fluid tight seal, it may be cheap and easy to manufacture and may be flexible. In some embodiments the conduit is configured to be flexible. In some embodiments at least a portion of the conduit is configured to be flexible. In some embodiments the conduit comprises a flexible material. In some embodiments the conduit is flexible. In some embodiments a portion of the conduit is flexible. In some embodiments the distal portion of the conduit is flexible. In some embodiments the distal portion of the conduit is configured to be flexible. In some embodiments the conduit comprises means to prevent or resist the said conduit from fully collapsing and blocking fluid flow. In some embodiments the conduit comprises a porous material. In some embodiments the conduit comprises a porous material within the conduit. In some embodiments the conduit comprises a resilient material. In some embodiments the conduit comprises a resilient material within the conduit. In some embodiments the conduit comprises foam. In some embodiments the conduit comprises foam within the conduit. In some embodiments the electrical flow pathway comprises a wire. In some embodiments the electrical flow pathway comprises an electrical conducting wire. In some embodiments the wire comprises electrical conducting material. In some embodiments the wire or the electrical conducting wire comprises a flexible material. In some embodiments the wire or the electrical conducting wire is flexible. In some embodiment the wire or electrical conducting wire is configured to be flexible. In some embodiments a portion of the wire or the electrical conducting wire is flexible. In some embodiment a portion of the wire or electrical conducting wire is configured to be flexible. In some embodiments a distal portion of the wire or the electrical conducting wire is flexible. In some embodiment a distal portion of the wire or electrical conducting wire is configured to be flexible. Advantageously the wire of electrical conductive wire is flexible and soft, to be configured to offer user comfort, especially if laid on, for example in bed. In some embodiments a portion of the wire or the electrical conducting wire is less flexible than another portion of the wire or the electrical conducting wire. In some embodiment a portion of the wire or electrical conducting wire is configured to be less flexible than another portion of the wire or electric conducting wire. In some embodiments the wire or electrical conductive wire or conductive material is covered by insulating material along its length. In some embodiments the wire or electrical conductive wire or conductive material is partially enclosed by a housing or sleeve, for example along its length. The housing or sleeve, in some embodiments may comprise plastic, or a film or comprise a plastic film. In some embodiments the wire or electrical conducting wire is an insulated wire. Advantageously this may enable the wire or electrical conducting wire to be used safely and for the electrical current to be delivered where required. In some embodiments the electrical flow pathway comprises a metal, or graphite, or both metal and graphite. This does not exclude other materials. In some embodiments the electrical conducting material comprises graphite. In some embodiments the wire of the electrical conducting pathway or electrode assemblies comprises graphite. In some embodiments the electrical flow pathway comprises a woven or knitted material. In some embodiments the electrical flow pathway comprises a woven or knitted material, wherein the woven or knitted material comprises graphite. In some embodiments the electrical flow pathway comprises a woven or knitted graphite material. In some embodiments the electrical flow pathway or electrode assemblies comprise a woven or knitted material wherein the woven or knitted material is coated with an electrical conductive material, for example metal or graphite. In some embodiments the electrical flow pathway comprises a woven cotton material coated with graphite. This allows a cheap and easy manufacturing of a soft flexible electric conducting material. In some embodiments at least a portion of the electric conductive material of the electrode assemble, is within at least a portion of a housing or sleeve. In some embodiments the housing or sleeve of the electrode assembly is elongated. In some embodiments the housing or sleeve of the electrode assembly is elongated comprising at least a portion of an elongated electric conductive material within it. In some embodiments the electrode assembly comprise a housing or sleeve. In some embodiments the electrode assembly comprises a housing or sleeve that is configured to surround at least a portion of electric conducting material or electrical flow pathway. In some embodiments the housing or sleeve of the electrode assembly comprises electrical insulating material. In some embodiments the housing or sleeve of the electrical assembly is configured to be flexible, able to fold or bend. In some embodiments the housing or sleeve of the electrical assembly is configured to insulate the electric conducting material or electrical flow pathway, from external elements. In some embodiments the housing or sleeve of the electrode assembly comprises means to prevent or resist the said housing or sleeve from fully collapsing and blocking electrical current flow. In some embodiments a portion of the conduit of the fluid flow pathway and a portion of each of the at least two electrode assemblies are attached to each other. In some embodiments a portion of the electrical flow pathway of the two electrode assemblies are attached to each other. In some embodiments a portion of the proximal end of the conduit of the fluid flow pathway and a portion of each of the proximal ends of the at least two electrode assemblies are attached to each other. In some embodiments a portion of the fluid flow pathway and a portion of each of the proximal ends of the at least two electrode assemblies are attached to each other. The attachment may be indirectly attached. In some embodiments a portion of the fluid flow pathway and a portion of each of the electrical flow pathway of each of the at least two electrode assemblies are attached to each other. Advantageously this may enable easy storage and handling of the dressing apparatus. In some embodiments a portion of each of the electrode assemblies or a portion of each of the electric flow pathway portion of the at least two electrode assemblies are attached to each other by an attachment mechanism. In some embodiments the attachment mechanism comprises a tube. In some embodiment the attachment mechanism comprises a multichannel tube. In some embodiments the attachment mechanism comprises plastic. In some embodiments a portion of the at least two electrode assemblies and the fluid flow pathway or conduit of the fluid flow pathway are attached together by the attachment mechanism. In some embodiments the attachment mechanism comprises a triple conduit tube. Advantageously a triple conduit tube may keep the proximal portions of the at least two electrode assemblies and the fluid flow pathway and / or conduit of the fluid flow pathway organised, or secure or safe or easily accessible or any combination thereof for example. In use quick and easy connection of the dressing apparatus to the vacuum source or electrical current source would be desirable. In some embodiments the attachment mechanism is configured to be a hinge point for the at least two electrode assemblies or the electric flow pathways of the at least two electrode assemblies. In some embodiments the distal edge of the attachment mechanism is configured to be a hinge point for the at least two electrode assemblies or the electric flow pathways of the at least two electrode assemblies. In some embodiments the attachment mechanism is configured such that the distal edge of the attachment mechanism is positioned at a central position on the cover of the dressing material, or on the cover of the dressing material at a position centrally over the dressing material. Centrally may include in meaning halfway along the longitudinal axis of the dressing material, and or halfway along the perpendicular axis from the halfway point along the longitudinal axis. Advantageously the attachment mechanism of the present invention may be configured that moving or pivoting the free ends of the electrode assemblies, or the independently moveable portions of the electrode assemblies, can be completed easily and confidently that the conductor pads will be substantially on either side of the middle of a site for treatment for example a wound of a patient. In some embodiments the port of the fluid flow pathway and / or conduit of the fluid flow pathway may comprise a visual marking. In some embodiments the connector at the proximal end of the wire or electrical conducting wire may comprise a visual mark. In some embodiments the visual mark may indicate which end is to be connected to what. For example, the connectors, or a portion of the connector at the proximal portion or end of the wire or electrical conducting wire may be red in colour. For example, in some embodiments the connectors, or a portion of the connector at the proximal portion or end of the wire or electrical conducting wire may be comprise a plus “+” or negative “-“symbol. For example, in some embodiments the connectors, or a portion of the connector at the proximal portion or end of the wire or electrical conducting wire or one of the electrode assemblies may be comprise a capital Latin letter el “L” or a capital Latin letter ar “R“. In some embodiments the port, or a portion of the port, at the proximal end of the fluid flow pathway or conduit of the fluid flow pathway may be green in colour. It is foreseen that the dressing apparatus of the present invention aids easy and quick and confident usage by a user. In some embodiments a portion the fluid flow pathway or conduit of the fluid flow pathway and a portion of each of the at least two electrode assemblies are attached to each other, and to the cover of the dressing material. In some embodiments this attachment is directly to each other, while in some alternative embodiments this attachment may be indirectly with each other. In some embodiments a portion of the proximal end of the fluid flow pathway or conduit of the fluid flow pathway and a portion of each of the proximal ends of the at least two electrode assemblies are attached to each other, and to the cover of the dressing material. In some embodiments this attachment is directly to each other and in some embodiments may be indirectly with each other. In some embodiments a portion of the conduit of the fluid flow pathway and a portion of the at least two electrode assemblies are attached to each other, and to the cover of the dressing material at a central position along the longitudinal length of the dressing material. In some embodiments a portion of the conduit of the fluid flow pathway and a portion of the at least two electrode assemblies are attached to each other, and to the nondressing side of the cover of the dressing material at a central position along the longitudinal length of the dressing material. In some embodiments a portion of the proximal end of the conduit of the fluid flow pathway and a portion of the proximal end of the at least two electrode assemblies are attached to each other, and to the cover of the dressing material at a central position along the longitudinal length of the dressing material. In some embodiments a portion of the fluid flow pathway or conduit of the fluid flow pathway and a portion of the at least two electrode assemblies are attached to the non-dressing side of the cover of the dressing. In some embodiments a portion of an electrode assembly of the at least two electrode assemblies is movable, (at least is movable before use and fixing of the conductor pad). In some embodiments a portion of an electrode assembly of the at least two electrode assemblies is independently movable. In some embodiments a portion of an electrode assembly is independently movable from the other electrode assembly and the cover of the wound dressing. In some embodiments a portion of an electrode assembly is independently moveable between a first configuration and an at least second configuration. In some embodiments a portion of an electrode assembly is independently moveable between a first configuration and an at least second configuration, wherein the first configuration is on or over the cover of the dressing material. Wherein “over” is determined when the longitudinal axis of the dressing material is horizontal, and the dressing material is in an orientation for use. In some embodiments a portion of an electrode assembly of the at least two electrode assemblies is pivotable, (At least is pivotable before use and fixing of the conductor pad). In some embodiments a portion of an electrode assembly of the at least two electrode assemblies is independently pivotable. In some embodiments a portion of an electrode assembly is independently pivotable from the other electrode assembly and the cover of the wound dressing. In some embodiments a portion of an electrode assembly is independently pivotable between a first configuration and an at least second configuration. In some embodiments a portion of an electrode assembly is independently pivotable between a first configuration and an at least second configuration, wherein the first configuration is on or over the cover of the dressing material. Wherein “over” is determined when the longitudinal axis of the dressing material is horizontal, and the dressing material is in an orientation for use. It is foreseen that in some embodiments the electrode assemblies will be positioned in a first configuration that a portion of the electrode assembly, for example a distal end portion, is on or over the cover of the dressing material. This is advantageous for storage and transport to reduce the overall footprint and make packing and transporting of the dressing apparatus more efficient. Then in a position of use, in some embodiments, the two electrode assemblies may be moved or pivoted so that the conductor pads may be fixed in position at a required site. It is foreseen that in some embodiments the distal portion of the electrode assembly will be independently movable or pivotable compared to the proximal portion as the proximal end or end portion may be attached to the other electrode assembly, or the fluid flow pathway or the conduit of the fluid flow pathway or the cover of the dressing material or any combination of attachment to: another electrode assembly, the fluid flow pathway or conduit of the fluid flow path, or the cover of the dressing material. In some embodiments a portion of the distal end, of an electrode assembly, that comprises a conductor pad is movable or pivotable between a first configuration wherein the conductor pad is on top of, or over, the cover of the dressing material, and an at least second configuration. “On” and “over” is determined when, in the first configuration, the dressing material is in a horizontal configuration, in an orientation for use (that it is the dressing material only that may need be in the horizontal configuration in an orientation for use, to determine over or on; and over includes directly and indirectly - something in between. It is foreseen that in a first configuration a portion of the distal end that comprises a conductor pad of a first electrode assembly may be on the cover of the dressing material and a portion of a distal end of a second electrode assembly may be on the first electrode assembly thus over the cover of the dressing material. Advantageously this first configuration orientation is good for storage and transportation as there is a smaller footprint. It is foreseen that when ready for use the electrode assemblies may be pivoted or moved so that the conductor pads at the distal ends of the electrode assemblies may be desired where required. Thus, the movability and pivotability is until used and secured in the required position. In some embodiments a portion of an electrode assembly, that comprises a conductor pad of an electrode assembly is pivotable between a first configuration wherein the conductor pad is over, the cover of the dressing material of the fluid flow path, and an at least second configuration, and wherein conductor pad of the electrode assembly is within the footprint of said cover of the dressing material in the first configuration. In some embodiments a distal portion of an electrode assembly, that comprises a conductor pad of an electrode assembly is movable or pivotable between a first configuration wherein the conductor pad is over, the cover of the dressing material of the fluid flow path, and an at least second configuration, and wherein conductor pad of the electrode assembly is within the footprint of said cover of the dressing material in the first configuration. In some embodiments the distal end of an electrode assembly, that comprises a conductor pad of an electrode assembly is moveable or pivotable between a first configuration wherein the conductor pad is over, the dressing material of the fluid flow path, and an at least second configuration, and wherein the conductor pad of the electrode assembly is within the footprint of said dressing material when in the first configuration. In some embodiments the distal end of an electrode assembly is pivotable between a first configuration wherein the conductor pad is over, the dressing material of the fluid flow path, and an at least second configuration, wherein the conductor pad of an electrode assembly is within the footprint of both the said cover of the dressing material and wherein the conductor pad is within the footprint of the said dressing material, when in the first configuration. In some embodiments the distal end of an electrode assembly, that comprises a conductor pad of an electrode assembly is moveable or pivotable between a first configuration and an at least second configuration wherein in the at least second configuration the conductor pad is spaced from the cover of the dressing material. In some embodiments the conductor pad is spaced from the cover of the dressing material of the fluid flow pathway when in the at least second configuration. In some embodiments the conductor pad is spaced from the dressing material of the fluid flow pathway when in the at least second configuration. In some embodiments it is foreseen that when about to use the dressing apparatus of the present invention one may position the dressing material and move or hinge the conductor pads to their required position. In some embodiments the conductor pad comprises a cover. In some embodiments, the cover of the conductor pad is configured to attach the conductor pad to a site. In some embodiments the cover of the conductor pad is spaced from the cover of the dressing material of the fluid flow pathway when in the at least second configuration. Advantageously this may mean that there is greater chance of more space between the positioned dressing material and the positioned conductor pad thus less risk of a surface liquid connection from liquid on the surface area of a site. In some embodiments the cover of conductor pad is distal from the dressing material of the fluid flow pathway when in the at least second configuration. In some embodiments the cover of the conductor pad or the cover of the dressing material, or both the cover of the dressing material and the cover of the conductor pad, comprises a film. In some embodiments the cover of the conductor pad or the cover of the dressing comprises, or both the cover of the dressing material and the cover of the conductor pad, comprise a fluid impermeable film. In some embodiments the cover of the conductor pad or the cover of the dressing material, or both the cover of the dressing material and the cover of the conductor pad, comprises an adhesive. In some embodiments adhesive is positioned on a portion of a site facing surface of the cover of the dressing material. In some embodiments adhesive is positioned on a circumferential portion of a site facing surface of the dressing material. Ideally, in some embodiments, the adhesive will be on the cover on a site facing surface surrounding the dressing material, thus the exposed cover surface able to make direct contact with a site, for example a patient’s skin. In some embodiments the adhesive comprises hydrogel. In some embodiments the cover of the dressing material or the cover of the conductor pad, or both the cover of the dressing material and the cover of the conductor pad, comprise a removable protective layer configured to be removed, for example before use, to expose the dressing material or conductor pad or adhesive, for contact with a site when in use. In some embodiments the distal ends, of the at least two electrode assemblies, that each comprise a conductor pad, are configured to be movable or pivotable between a first configuration, wherein the conductor pad is on top of, or over, the cover of the dressing material of the fluid flow path, and an at least second configuration wherein the conductor pad is spaced from the said cover of the dressing material, and each conductor pad is spaced from the other conductor pad. In some embodiments the distal ends, of the at least two electrode assemblies, that each comprise a conductor pad, are configured to be movable or pivotable between a first configuration, wherein the conductor pad is on top of, or over, the cover of the dressing material of the fluid flow path, and an at least second configuration wherein the conductor pad is spaced from the said cover of the dressing material, and each conductor pad is spaced from each other on opposition sides to the said cover of the dressing material. In some embodiments the electrical flow pathway is flexible. In some embodiments the electrical flow pathway is pivotable. In some embodiments the dressing apparatus comprises a hinge mechanism. In some embodiments the hinge mechanism is a hinge point. In some embodiments the hinge mechanism is the hinge point for the at least two electrode assemblies. In some embodiments the hinge mechanism is the hinge point for the electrical flow pathway of the at least two electrode assemblies. In some embodiments the hinge mechanism is the attachment mechanism. In some embodiments the attachment mechanism and the pivoting mechanism are the one same mechanism having more than one function. In some embodiments an electrode assembly is attached to the cover of the dressing material by an attachment mechanism. In some embodiments the two electrode assemblies are attached to the cover of the dressing material by an attachment mechanism. In some embodiment a portion an electrode assembly is attached to the cover of the dressing material via or by a non-conductive material. In some embodiments the attachment mechanism comprises a non-conductive material. In some embodiments the attachment mechanism is configured to enable a conductor pad to be positioned perpendicular to the dressing material. In some embodiments the attachment mechanism is configured to enable the conductor pads to be positioned perpendicular to the dressing material on opposite sides of the dressing material. In some embodiments the attachment mechanism is configured to be non-protruding or smooth or relatively flat when the dressing apparatus, or electrode assemblies, or the concertina mechanism are in the first configuration. In some embodiments the pivoting means of the two electrode assemblies comprises folds of material or comprises a concertina shape or concertina mechanism. In some embodiments the pivoting means or mechanism or the attachment mechanism or both the pivoting means and the attachment mechanism comprises a non-electrical conductive material. In some embodiments the pivoting means pivoting mechanism comprises an attachment means, or attachment device, to attach the electrode assembly to the cover of the dressing material, either directly or indirectly. In some embodiments the distal edge of the attachment mechanism comprises the pivoting means or pivoting point or hinge point. It is foreseen in some embodiment that the electrode assemblies may hinge or pivot at the point of entering into the attachment mechanism on the cover of the dressing material. In some embodiments the at least two electrode assemblies are attached to a distal face of the attachment mechanism. In some embodiments the length of free end portion of the at least two electrode assemblies or the independently movable ends of the at least two electrode assemblies or the distance of the electric flow pathway from the distal edge of the attachment mechanism to the proximal edge of the conductor pad, are configured to be greater than the distance from the central position of the dressing material or from the attachment mechanism on the cover of the dressing material or from the halfway point along the longitudinal axis of the dressing material to the outer edge of the dressing material or outer edge of the cover of the dressing material in a direction perpendicular to the longitudinal axis of the dressing material. In some embodiments the length of free end portion of the at least two electrode assemblies or the independently movable ends of the at least two electrode assemblies or the distance of the electric flow pathway from the distal edge of the attachment mechanism to the proximal edge of the conductor pad, are configured to be ten percent (10%) greater than the distance from the central position of the dressing material or from the attachment mechanism on the cover of the dressing material or from the halfway point along the longitudinal axis of the dressing material to the outer edge of the dressing material or outer edge of the cover of the dressing material in a direction perpendicular to the longitudinal axis of the dressing material. Advantageously this may enable a user to quickly and confidently position the conductor pads on opposite sides of the dressing material at a position that is highly likely to leave a gap or non-liquid gap between the conductor pad and the dressing material or cover of the dressing material, or liquid from a wound or the dressing material including cover. In some embodiments, the electrical conductive material comprises woven, or knitted material. Advantageously this may enable a flexible and soft to the feel electrical flow pathway from the electrical source to the conductive pad. This is important as the user may lay or sit on the electrode assemblies. In some embodiments the electrical conductive coated material comprises woven, or knitted material. Advantageously this may enable a flexible and soft to the feel electrical flow pathway from the electrical source to the conductive pad. This is important as the user may lay or sit on the electrode assemblies. In some embodiments the electrode assembly comprises a fold. In some embodiments the electrode assembly comprises a fold at a portion of the outer edge of the cover of the dressing material, or at a portion of the outer edge of the dressing material positioned on the dressing apparatus. A fold may allow the electrode assemblies to be easily stored or transported in a configuration that takes less space and or has a smaller footprint than when in a configuration suitable for use, where the conductor pads and electrode assemblies may need to be separated to opposite sides of the dressing material. In some embodiments a fold comprises an elongate crease. In some embodiments a fold comprises thinner material then the rest of the assembly for example the electrode assembly. In some embodiments a fold comprises weaker less stiff or rigid material then the rest of the assembly for example the electrode assembly. In some embodiments the electrode assembly is configured to only fold or move or pivot about an elongate crease or line. Folding about only one point aids the ease of use as less choice. In some embodiments the electrode assembly is configured to only fold or move or pivot about a plurality of points or portions of the electrode assembly. Being able to fold or move about a plurality of positions offers flexibility to the user. In some embodiments the electrode assembly is configured to only fold or move or pivot about a plurality of points or portions of the electrode assembly, along the longitudinal axis of the electrode assembly. In some embodiments the electrode assembly is configured to fold, or pivot or move between at least a first position where the conductor pad is over the cover of the dressing material or over the dressing material, and an at least second position where the conductor pad is spaced from the cover of the dressing material or the dressing material. In some embodiments the electrode assemblies are configured that at least a portion of one electrode assembly may fold on top of at least a portion of another electrode assembly. This may help to reduce the footprint of the dressing apparatus in certain configurations. In some embodiments the electrode assembly comprises perforations. In some embodiments the electrode assembly comprises perforated material. In some embodiments the electrode assembly comprises an enclosing housing or sleeve that is perforated over a portion of the area of the housing or sleeve. In some embodiments the electrode assembly may comprise a perforated join. In some embodiments the housing or sleeve of the electrode assembly comprises a perforated join. In some embodiments the housing or sleeve of the electrode assembly comprises a perforated join along the longitudinal length of the electrode assembly. In some embodiments the housing or sleeve of the electrode assembly comprises a perforated join configured that when the perforated join is broken enables extension of the electrode assembly a further distance than when the perforated join is not broken. In some embodiments the perforated join of the electrode assembly may be configured that when joined prevents full extension of the electrode assembly in distance. In some embodiments the perforated join of the electrode assembly may be configured that the perforated join can be broken by a force, for example less than 10 Newtons of force. In some embodiments the perforated join of the electrode assembly may be configured that when the perforated join is broken that the housing or sleeve is not otherwise broken reducing the insulating properties of the housing or sleeve. In some embodiments the perforated join of the electrode assembly may be configured that when the join is broken that the housing or sleeve still comprises its insulating function to the electric conducting material within the housing or sleeve. Advantageously the perforated join may assist in quick and efficient tearing off of unneeded material, or a join, from the electrode assemblies. This may also help create a gap between the cover of the dressing material and the conductor pad to help reduce the risk of electrical current being leaked away from where it is intended to be. The perforated join may comprise cuts or apertures in the material so that the attachment is less along a desired path or shape. This helps efficient use of the dressing apparatus while providing what may be an easy manufacturing process. In some embodiments the electrode assemblies comprise a series of folds or a concertina shape or mechanism. It is foreseen that in some embodiments that the series of folds or concertina shape of the electrode assembly is configured to enable a shorter overall length in a first configuration and a longer or greater overall length is an at least second configuration, wherein the conductor pad in the at least second configuration is further spaced from the attachment mechanism or dressing material or hinge point than when in a first configuration. In some embodiments the folds or concertina mechanism of an electrode assembly is configured to be expandable between an at least first length and an at least second length, wherein the at least second length is a greater length than the first length and or the at least second length is a maximum length of the concertina mechanism. In some embodiments the first length may be the minimum length possible of the concertina mechanism. In some embodiments the at least second length of the concertina mechanism is configured to enable the cover of the conductor pad or the conductor pad to be spaced from the cover of the dressing material or the dressing material. In some embodiments the at least second length of the concertina mechanism is configured to enable the cover of the conductor pad or the conductor pad to be spaced from the cover of the dressing material or the dressing material at a maximum distance from the dressing material or cover of the dressing material. In some embodiments the concertina mechanism, of the electrode assembly, is configured to enable a conductor pad to be positioned perpendicular to the dressing material. In some embodiments the concertina mechanism, of the electrode assembly, is configured to enable the conductor pads to be positioned perpendicular to the dressing material on opposite sides of the dressing material. In some embodiments concertina mechanism, of the electrode assemblies is configured to be collapsible. In some embodiments the concertina mechanism of the electrode assemblies is configured to be collapsible when the dressing apparatus, or the at least two electrode assemblies are in the first configuration. This is advantageous as when collapsed the dressing apparatus takes up less space than when expanded or not fully collapsed when for example in use, and thus maybe a smaller volume for storage and transportation. In some embodiments the concertina mechanism is configured to be non-protruding when the dressing apparatus, or electrode assemblies, or concertina mechanism is in the first configuration. In some embodiments the concertina mechanism is configured to be non-protruding when collapsed in the position of the first length of the concertina mechanism. It is foreseen that is some embodiments when the concertina mechanism is collapsed it will be relatively flat with the cover of the dressing material and therefore be of less volume when in use so efficient for storage or transportation. In some embodiments a portion of the fluid flow pathway is within a conduit and the conduit is flexible. In some embodiments the electrically conducting material is flexible. In some embodiments the electrical flow pathway is partially enclosed by a flexible housing. In some embodiments the flexible housing is a film. In some embodiments the attachment mechanism is attached to the cover of the dressing material and the attachment mechanism is configured to attach a portion of the at least two electrode assemblies to each other. In some embodiments the attachment mechanism is configured such that an edge of the attachment mechanism is a hinge point for pivoting the free distal ends of the at least two electrode assemblies. In some embodiments the edge of the attachment mechanism that is a hinge point for pivoting the free distal ends of the at least two electrode assemblies, is a distal edge of the attachment mechanism. In some embodiments the conductor pads are pivotable about the attachment mechanism or an edge of the attachment mechanism. In some embodiments the attachment mechanism or the distal edge of the attachment mechanism is centrally positioned over the dressing material. In some embodiments the length of the free ends of the at least two electrode assemblies from the attachment mechanism to the proximal edge of the conductor pad is greater than the perpendicular distance from the longitudinal axis of the dressing material to the outer edge of the cover of the dressing material. In some embodiments the distal end of an electrode assembly, that comprises a conductor pad of an electrode assembly is pivotable between a first configuration wherein the conductor pad is over the cover of the dressing material of the fluid flow path, and an at least second configuration. In some embodiments in the at least second configuration the conductor pad, or any cover of the conductor pad, is spaced from the cover of the dressing material of the dressing material. In some embodiments the conductor pad comprises a cover. In some embodiments the free distal end, or end portion, of the at least two electrode assemblies or the electric flow pathway comprises folds or a concertina mechanism. In some embodiments the folds or concertina mechanism is configured to be expandable between an at least first length and an at least second length. In some embodiments the at least first length is shorter than the at least second length. In some embodiments the at least second length is greater in length than the at least first length. In some embodiments the at least first length is a minimum length. In some embodiments the at least second length is a maximum length. In some embodiments the series of folds or concertina mechanism is configured to be expandable between an at least first length and an at least second length, wherein the first length is a length shorter than the second length; or the first length is a minimum length and an at least second length is longer than the first length or the at least second length is the maximum length of the concertina mechanism. In some embodiments the at least second length is configured to enable the cover of the conductor pad or the conductor pad to be spaced from the cover of the dressing material or the dressing material. In some embodiments the at least second length is configured to enable the cover of the conductor pad or the conductor pad to be spaced, at a maximum distance, from the cover of the dressing material or the dressing material. When stating “the length” whether the first or second length this is referring to the length of the electrode assembly or the electric flow pathway of the electrode assembly or the distance of the conductor pad from the dressing material. To help describe the invention one, non-limiting, example will now be generally described in detail without intending to being limiting to other examples. In this example of a dressing apparatus of the present invention there is a dressing material covered by a cover, which in this example the cover is a plastic fluid impermeable film. In this example the dressing material comprises articulated foam. On this cover in a central position is attached an attachment device such that the distal edge of the attachment device is at a central position on the cover of the dressing material and two electrode assemblies enter the attachment at the distal side to be attached. In this example the attachment device is also attached to a portion of the fluid flow pathway keeping a portion, thus each of the three conduits of the fluid flow pathway, and the electrical flow pathway are together at a position near to the proximal ends of the three said conduits. This hold these safely together to make it easy to package and handle. From a packaged configuration the dressing apparatus may be in a first configuration where the conductor pads of the two electrode assemblies are over the dressing material or cover of the dressing material thus a smaller footprint for the dressing apparatus than in an at least second configuration for example when about to be used. In this example the conductor pads and the electrode assemblies themselves are pivotable about the hinge point at the attachment device. In this example the electrical flow pathway comprises a cotton woven material coated with graphite within a plastic sleeve, and configured to enable electrical current flow from a connected electrical source to a conductor pad at the distal end of the electrode assembly. The attachment device, in this example, being positioned centrally such that on pivoting the conductor pads perpendicularly to the longitudinal axis of the dressing material, one on either side of the dressing material it is easy for a user with the hinge point so positioned to have one conductor pad on either side of the dressing material and then therefore easy to have the conductor pads on either side of a wound of a patient that is covered and out-of-sight by the dressing material. In some further embodiments of the present invention the electrode assemblies comprise a concertina mechanism that in the first configuration may be over the dressing material but when pivoted and expanded in length may be at a suitable distance from the dressing material and the cover of the dressing material to provide a gap or non-liquid gap between the conductor pad and the dressing material, or covers of the dressing material and conductor pad. It is foreseen that in some embodiments the electric flow pathway portion of the electrode assembly and the fluid flow pathway will be flexible and thus soft, as known in the industry, to be less uncomfortable should a user or patient sit or lay on the electric flow pathway or the fluid flow pathway. In some further embodiments the dressing apparatus may comprise a perforated join that requires breaking in order to distance the conductor pads of the electrode assemblies from the dressing material. In another aspect of the present invention there is provided a system comprising a dressing apparatus as herein described and a negative pressure source and an electrical current source. In another aspect of the present invention there is provided a method for applying both electrical current and negative pressure to a site, comprising the step of using a dressing apparatus as described herein. In another aspect of the present invention there is provided a method for applying both electrical current and negative pressure to a site, comprising using a dressing apparatus as describe herein and further comprises the steps of: -removing any, if present, removable protective layers from the cover of the dressing material; - positioning the dressing material on a site, for example a wound; -securing the dressing material on a site, for example a wound; -removing any, if present, removable protective layers from the cover of the conductor pad of a first electrode assembly; -pivoting or moving a distal end of a first electrode assembly and positioning the conductor pad of the first said electrode assembly to a site, spaced from the cover of the dressing material; -securing the conductor pad of the said first electrode assembly to a site, optionally for example on a portion of skin of a patient; -removing any, if present, removable protective layers from the cover of the conductor pad of a second electrode assembly; -pivoting a distal end of the second electrode assembly and positioning the conductor pad of the second said electrode assembly to a site, spaced from the cover of the dressing material; -securing the conductor pad of the said second electrode assembly to a site, optionally for example on a portion of skin of a patient. In some embodiments the method further comprises any one or more of the following steps of: Attaching the electrical flow pathway to a current source; Attaching the fluid flow pathway to a negative pressure source; Positioning the conductor pads of the first and second electrode assemblies on opposite sides of the dressing material; Positioning the conductor pad of the first or second or both first and second electrode assemblies such that there is a space or an air gap between the cover of the conductor pad and the cover of the dressing material; Positioning the conductor pad of the first or second or both first and second electrode assemblies such that there is a non-liquid gap between the cover of the conductor pad and the cover of the dressing material; Positioning the conductor pad of the first or second or both first and second electrode assemblies such that there is at least 1 centimetre distance between the cover of the conductor pad and the cover of the dressing material; Positioning the conductor pad of the first or second or both first and second electrode assemblies such that there is a dry or non-electrical conductive gap between the cover of the conductor pad and the cover of the dressing material; Expanding the folds or concertina mechanism to an expanded length; Expanding the fold or concertina mechanism to an expanded maximum length; Positioning the conductor pad perpendicular to the dressing material; Positioning the conductor pads on opposite sides of the dressing material; Extending the concertina mechanism of one or more electrode assemblies; Extending the concertina mechanism of one or more electrode assemblies to a maximum length; Extending the concertina mechanism of one or more electrode assemblies perpendicularly in direction from the dressing material; Extending the concertina mechanism of two electrode assemblies perpendicularly in direction from the dressing material such that each conductor pad of the two electrode assemblies are on opposite sides of the dressing material. In some embodiments the method comprises the step of: removing the removable protective layers immediately before securing the conductor pad or dressing materials to a site. In some embodiments a method for applying both electrical current and negative pressure to a site, further comprises the step of: - expanding the series of folds of a concertina mechanism of the at least two electrode assemblies to an expanded maximum length. In some embodiments a method for applying both electrical current and negative pressure to a site, further comprises the step of: -pivoting the conductor pads to be perpendicular to the longitudinal axis of the dressing material, such that a conductor pad from each at least two electrode assemblies is on opposite sides of the dressing material. In some embodiments the method may further comprise the step of: breaking a perforated join. In some embodiments the method may further comprise the step of: tearing or cutting off a portion of the electrode assembly that is at least partially surrounded by a perforated join, before positioning. In some embodiments the method may further comprise the step of: - extending the electrode assemblies to less than maximum distance from the dressing material in order to leave a portion of the electrode assembly that does not contact the attachment site, or skin of a user. In some embodiments the method may further comprise the step of: - extending the electrode assemblies to less than maximum distance from the dressing material in order to leave a portion of the electrode assembly that is distanced from the attachment site, or skin of a user. In some embodiments the method further comprising the step of: - removing an area of material of the at least two electrode assemblies wherein the said material is at least partially surrounded by the said perforated join. In some embodiments the method further comprising the step of: - spacing and distancing a portion of the at least two electrode assemblies previously joined by the said perforated join, from a site. Any one or more features described herein of any aspect, example or embodiment of the invention as described herein may be combined with any other one or more features of any other aspect, example or embodiment of the invention as described herein. Moreover, reference in the singular to feature, for example, any inlet, outlet, flow path, valve, flow conduit or other component, will be understood to may include the plural, and in particular plural flow paths in series or in parallel as dictated by the requirements of the function may be provided for any feature of the invention. Likewise, the plural term may include the singular. It should be understood that the terms first, second third etc and the like may be used herein to help describe various elements or features but need not necessarily be limited by these terms, these terms are used to distinguish one element or feature from another. For example, a first feature or element may be termed a second element or feature and similarly a second element or feature may be termed a first element or feature without departing from the scope of the embodiment described. The description, embodiments, examples and related figures herein describing the present invention are intended to illustrate various possible embodiments of the present invention and the said embodiment, examples and related figures are not intended to confine or limit the present invention to any specific embodiment or example as herein described but includes a plurality of variations and alternatives within the scope of the claims. By the term “centrally” or “central position” or the like as used herein includes in meaning halfway along the longitudinal axis of the dressing material, and or halfway along the perpendicular axis from the halfway point along the longitudinal axis. Thus, a central point can be calculated from irregular shapes. A person skilled in the art will understand this meaning and that an absolute location need not be necessary. By the term “distal portion” this term is used to include in meaning the second or furthest away half portion of an item. By the term “distal portion” this term is used to include in meaning the first, or nearest, half portion of an item. By the term “electrical flow path” as used herein this includes in meaning a means to enable an electrical current or electrical charges to be conveyed along a pathway or an item or the length of an item. By the term “electric conductive material” as used herein, this term is used to describe a material that can conduct electricity or electric current, and includes material coated with an electric conductive material thus able to conduct electricity. By the terms “electric current” and the like terms as are used herein this is used to describe the movement of electric charges but also used herein to include or be interchangeable with “electrical energy” or “electricity”. By the term “fluid flow pathway” this term is used to include in meaning a means to enable a fluid to flow along a pathway, or an item or its length. By the term “longitudinal axis” this is used to mean a central axis along the longest length of an object, and where there is not a longest length includes a central axis along the length of an object from the direction where the fluid flow pathway joins the dressing material. By the term “Over” as used herein this is determined when the longitudinal axis of the dressing material is horizontal and in an orientation for use, and includes in meaning directly and indirectly over, thus includes when something is in between. By the term “negative pressure” as used herein this term is used to include in meaning a pressure less than another pressure relatively that it is able to draw material and need not necessarily have to be below atmospheric pressure. By the term “pivot” and “hinge” and the like as used herein are used interchangeably and this includes in meaning to move around, about or from a fixed point for example a hinge point or hinged point but the object moving or being pivoted does not necessarily need to be rigid. By the term “perforated join” and the like as used herein this term is used to mean a series of apertures or cuts in a line configured to make breaking apart of the material on either side of the line of apertures or cuts easier. By the term “port” as used herein this includes in meaning a working, operating port that is selectively able to be opened or closed. By the term “site” as used herein this term is used to mean a required position, for example an attachment site, and may include more than one site, thus a site may be more than one site, and the or a site of one feature of the dressing apparatus for example the dressing material may be different from the or a site of another feature of the dressing apparatus for example the electrode assemblies. The term is used to help describe the in-use positioning, for example attachment, of the dressing apparatus when in use and is not intended to be otherwise limiting to the device. The or a site may be wound or wound region or the skin of a patient for example, but not limited to. By the term “wire” and the like as used herein this includes in meaning an elongated length of metal but as used herein also may include other conductive materials that are not metals, for example graphite, but are an elongated length able to conduct electricity. It is envisaged that the present invention can be used for training on non-living organisms and can be used for non-medical purposes as well as medical and therefore the invention may be used on a wide variety of non-living organism. The invention will now be described by way of example with the assistance of the attached drawings. Figure 1 is an exploded partial cut away side view of an example of negative pressure dressing material part features of the present invention; Figure 2 is an exploded partial cut away side view of an example an electrode assembly part features of the present invention; Figure 3 is an exploded partial cut away view of two example electrode assemblies of the present invention; Figure 4a and 4b are top plan view of an example of the present invention; Figure 5a and 5b are top plan view of an example of the present invention; Figure 6a, 6b, 6c, 6d are partial cut away views of the concertina mechanism. Figure 7a and 7b shows another embodiment of the present invention where the electrode assemblies fold out from the dressing for use; Figures 8a, 8b and 8c show another embodiment of the present invention where the electrode assemblies fold out from the dressing in use; Figures 9a and 9b show another embodiment of the present invention. Figure 1 shows an example of the dressing material part features of an example of the present invention wherein the Figure 1 shows a dressing material 2 connectable to a negative pressure source (not shown) via the fluid flow pathway 4. In this example the dressing material 2 comprises articulated foam but in other examples different material could be used. The fluid flow pathway 4 comprises a conduit 5 and an internal space or lumen 6 within the conduit 5 walls. Also, within the lumen 6 of the conduit 5 is in this example an optional feature of a foam material 7, that is configured to assist in keeping the walls of the conduit 5 apart when subjected to negative pressure. In this example the conduit 5 or conduit walls comprise a film and therefore are very flexible and soft for a user should a user sit or lay on the conduit 5. In this Figure 1 example there is also shown a cover 3 of the dressing material, the cover 3 footprint is of a greater area than the footprint of the dressing material 2, configured to be able to fully seal around the dressing material to a site. To assist in sealing the cover to a site there is shown adhesive 8. The adhesive 8 is in this example positioned around, but outside of the footprint of the dressing material 2 such that the cover 3 can be directly adhered to the required site. Also, in this example is shown an optional feature of a removable protective layer 9 on the bottom or site facing surface of the adhesive 8 and dressing material 2. Before use the removable protective layer 9 would be removed and the cover 3 adhered to the chosen site to hold the dressing material 2 in a substantially air and fluid tight seal. When connected to negative pressure, and negative pressure applied the dressing material and optional foam 7 within the lumen 6 will shrink. Figure 2 shows an example of an electrode assembly 10 according to the present invention. Shown is a conductor pad 11 again with an optional removable protective layer 9. Also shown is a cover 13 of the conductor pad 11 and an electrical flow pathway 12 which is enclosed by layers 14. The layers 14 are in this example film 14. The film 14 is not electrical conducting to ensure the electrical current is conveyed to the conductor pad 11. The film 14 is air and fluid impermeable in this example. The electrical flow pathway 12 in this example comprises an electrical conducting material 12. The electrical conducting material 12, or electrical flow pathway is a woven material. The electrical conducting material is a “soft” electrical flow pathway. In this example the electrical conducting material 12 or electrical flow pathway comprises woven cotton coated with graphite, in other examples a different conducting material 12 or materials could be used. The electrical conducting material 12 is flexible. The electrode assembly is configured to be connected to an electrical source (not shown) and to be configured to be able to convey an electrical current to the conductor pad. When the removable protective layer 9 is removed and the conductor pad 11 placed on the required site the dressing apparatus and electrode assembly is configured to convey electrical current to a site. When two electrical pads are positioned, electrical current may flow from one electrode to the other, as a person skilled in the art will understand. Figure 3 shows examples of two electrode assemblies according to examples of the present invention. Shown are the conductor pads 11, covers 13 and a “soft” electrical flow pathway 12 (conductive fabric) comprising an electrical conducting material, for example in this embodiment comprising woven cotton coated with an electrical conducting material for example graphite. Also shown in this Figure 3 is hard wiring connected to the soft electrical flow pathway 12 with coverings 14. The hard wiring may be the usual electrical wire comprising a metal inner and plastic insulating coating, or sheath. Figures 4a and 4b show an example of a dressing apparatus 1 of present invention wherein the electrode assemblies 10 are in a first configuration as shown in Figure 4a and in this example of a first configuration are positioned on or over the cover of the dressing material 2. In this example the conductor pads are positioned on or over the cover 3 of the dressing material but are also over the footprint of the dressing material 2. There is shown flaps 9 of the removable protective layer 9. The cover 3 of the dressing material 2, the conduit 5 with lumen 4. Electrical connectors 15 enable connecting with an electrical source to the electrode assembly Also shown is a port 16 for connecting to a negative pressure source. In this example the electrical connectors are mark “+” and to aid easy and confident connecting to an electrical source. In Figure 4a the electrode assemblies 10 are shown in a first configuration. In this first configuration the overall footprint of the dressing apparatus 1 is less than the overall footprint shown in an at least second configuration shown in Figure 4b. The conductive pads 11 of both electrode assemblies 10 are positioned within the footprint of the dressing material 2. One conductor pad 11 of a first electrode assembly 10 is on the cover 3 of the dressing material 2. The other conductor pad 11 of the second electrode assembly 10 is on the conductor pad of the first electrode assemble 10 and over the cover 3 of the dressing material 2. The first configuration of the electrode assemblies 10 or indeed the dressing apparatus 1 shown in Figure 4a is good for storage and transportation of the dressing apparatus 1 as is less in footprint area than when in use as shown in Figure 4b in the at least second configuration. When in use a dressing apparatus and or an electrode assembly position as shown in Figure 4b may be applicable. As shown here maybe the dressing material 2 is in the desired position for adhering to the required site. The two electrode assemblies 10 are from the first configuration pivoted or moved apart. The electric flow pathway of each electrode assembly may be independently movable from each other at their distal ends or end portions. In this example each electric flow pathway is independently movable from each other for a portion from an attachment mechanism to the distal ends of the electrode assembly. The attachment mechanism attaches a portion of the two electrode assemblies to the cover. In this example the distal edge of the attachment mechanism is at a central point along the longitudinal length of the dressing material 2. The distal edge of the attachment mechanism 20 is also a hinge point for pivoting or moving the distal ends of the electrode assemblies or conductor pads. The advantage of the positioning and configuration of the attachment mechanism such that the distal edge of the attachment mechanism is at a central portion along the longitudinal axis of the dressing material 2 is that it makes it easy and quick for a user to position the distal ends of the electrode assemblies 10 or the conductor pads 11 perpendicular from the dressing material 2 from a central point along the dressing material 2. In this example, the dressing apparatus 1 and electrode assembly 10 may be configured such that the electrical flow pathway 12 of each electrode assembly 10 may be independently movable from each other for at least a portion of the length of the electrical flow pathway 12. In this example, the dressing apparatus 1 and electrode assembly 10 may be configured such that the electrical flow pathway 12 of each electrode assembly 10 may be independently movable from each other for at least a portion of the length of the electrical flow pathway 12 from the edge of the attachment mechanism 20 to the distal ends. In this example the length of the electrode assemblies 10 from the distal edge of the attachment mechanism to the proximal edge of the cover of the conductor pad 11 is of a known length that when full extended perpendicularly will leave a gap between the cover of the conductor pad 11 and the cover 3 of the dressing material 2. Thus, the dressing apparatus 1 is quick and easy to use to ensure that a gap, for example a non-liquid gap, remains when the dressing material 2 and the conductor pads 11 are positioned and adhered to their chosen sites. Figure 5a and 5b are to another example of a dressing apparatus 1 the present invention. Similar to the example shown in Figures 4a and 4b there are two electrode assemblies 10 each with a conductor pad 11 at their distal ends. The attachment mechanism 20 is shown. In this example each electric flow pathway 12 of each electrode assembly 10 comprises a concertina mechanism 22. In Figure 4a the electrode assembly and thus dressing apparatus is in a first configuration. In this first configuration the concertina mechanism 22 is in a folded configuration and is at a short or shortest length. In this first configuration the conductor pads 11 may be positioned within the footprint of the dressing material 2 and overall, the footprint of the dressing apparatus 1 in this first configuration or configuration is less in area than in an at least second configuration as shown in Figure 5b. As shown in Figure 5b the footprint is greater than in the configuration as shown in figure 5a, a first configuration or configuration. In the figure 5b configuration the concertina mechanism has been extended or unfolded and the conductor pads 11 positioned at a distance from the cover 3 of the dressing material 2 and also positioned substantially perpendicular to the dressing material 2 one conductor pad 11 on each side of the dressing material 2. The concertina mechanism enables the conductor pads to be positioned or spaced further from the dressing material 2 or the cover from dressing material 2. This may ensure that there can be a liquid gap between the conductor pad 11 and the dressing material 2, or the cover 13 of the conductor pad 11 and the cover 3 of the dressing material 2, or a combination of cover and conductor pad 11 and dressing material 2. This is important when the dressing material is wide, or when wider than long. The present invention makes fitting the conductor pads easy and quick to ensure the proper spacing to include a liquid gap. Figure 6a, 6b, 6c, 6d show different stages of a concertina mechanism of an electrode mechanism 11 or an electric flow pathway of an electrode assembly according to one example of a dressing mechanism of the present invention. Figure 6a shows the concertina mechanism in a first configuration or configuration at a short or shortest length and a configuration that may be good for storage or transportation dues to the small footprint or less footprint when in use or a configuration when in use. Figures 6b and 6c show expanding configurations of the concertina mechanism. Figure 6d shows an expanded or substantially fully expanded or maximum or substantially maximum length of the concertina mechanism. In this example the electronic flow pathway 12 comprises an electric conductive material wherein the electric conductive material comprises a woven material that is flexible. The electric conductive material is partially enclosed by housing, a film which is flexible. The electric conductive material and the enclosing film is folded to create the concertina mechanism. Figure 7a and 7b show another embodiment of the invention where the conductor pads 11 or electrode assemblies 10 fold out from the cover 3 of the dressing material 2, at a hinge point 21. Figure 7a shows a typical configuration for storage where the footprint of the configuration is smaller or less than in area than when in use or in an in use configuration as shown in Figure 7b. In Figure 7a it is shown for this particular embodiment that the fold or hinge point 21 is at or near to the outer edge of the cover 3 of the dressing material, and that there is another corresponding hinge point 21 on the opposite side of the cover 3 dressing material 2, for the other electrode assembly 10. In this particular embodiment when in the storage type configuration on electrode assembly 11 folds on top of the other electrode assembly 10 over the cover 3 and dressing material 2 as can be seen in Figure 7a. This embodiment makes the positioning of the conductor pads 11 easy, a user only needs to fold out as much as possible the electrode assemblies 10 on either side of the cover 3 of the dressing material for a suitable position. Figure 8a, 8b and 8c shows another embodiment of the present invention. The figure 8a, 8b, 8c embodiment is similar to the Figure 7a, 7b embodiment that there is a hinge point 21 along or near a portion of the edge of the cover 3 of the dressing material 2. In this particular embodiment the electrode assemblies 10 comprise perforations, a perforated join 23 along a portion of the electrode assemblies 10. The performed join 23 may allow ease of tearing these portions out so as to create a gap or larger between the cover 3 of the dressing material 2 and the conductor pad 11 of the electrode assemblies 10. Figure 8a shows a typical storage configuration where one electrode assembly 10 is folded over the other electrode assembly 10 over the cover 3 of the dressing 2 and hence only one electrode assembly 10 can be seen. The perforations of the perforated join 23 can be seen on the electrode assembly 10. Figure 8b shows the two electrode assemblies 10, one extended and one still over the cover 3of the dressing material 2. Figure 8c shows one of the electrode assemblies 10 with the perforated area (an area at least partially surrounded by a perforated join) is torn or cut off, and removed, ready for use leaving a gap 24 between the conductor 11 and the cover 3 of the dressing material 2. The extending arm of the electrode assembly 11 need not be attached to an attachment site or a portion of skin and may be distanced upwards away from an attachment site or a portion of skin of a user such that there is a gap 24 between the conductor pad 11 and the cover 3 of the dressing material 2 along the attachment site or skin of a user. A portion of the electrode assemblies 10 is distanced from an attachment site so as to create a gap between the cover 3 of the dressing material 2 and the conductor pad 11 or the cover of the electrode pad 11, along an attachment site, or portion of skin of a user. Thus, this embodiment lowers the risk that there is a conductive path between conductor pad 11 and the cover 3 of the dressing material 2 along the surface of the attachment site or skin of a user. Thus, this embodiment helps reduce the risk of electrical current being depleted from where it is intended, for example a wound. Figure 9a and 9b show another embodiment of the present invention. In this embodiment the electrode assembly 10 is shown with conductor pad 11 and three creases or folding points 21 along the longitudinal length of the electrode assembly from the dressing material 2. In addition, along the length of the electrode assembly are perforated 23 joining of the electrode assembly to itself, as shown in Figure 9a. In practice the electrode assembly may be extended fully, or extended as much as possible without breaking the perforated joins, and the conductor pad 11 positioned for use, for example to a user or attachment, this is shown in Figure 9a. In use, optionally, in some applications these perforated join 23 may be broken and this portion of the electrode assembly extended or distanced from the attachment site or skin of a user creating a gap 24 on an attachment site or a portion of skin of a user, between the conductor pad 11 and the dressing material 2. In some embodiments there may be a perforated join on both sides of the electrode assembly. This gap 5 helps lessen the risk of electric power from the conductor pad from leaking along the surface of an attachment site or a portion of skin of a user, from where the electric power is desired to be directed to, for example a wound under the dressing material.

Claims

1. A dressing apparatus for applying both electrical current and negative pressure to a site, the dressing apparatus comprising:-a fluid flow pathway between a proximal end comprising a port configured for connecting to a negative pressure source, and a distal end comprising a dressing material, and the said dressing material comprising a cover;-at least two electrode assemblies, each electrode assembly comprising a proximal end and a distal end and an electrical flow pathway between the proximal end and the distal end, the proximal end is configured for connecting to an electrical current source, and the distal end comprising a conductor pad configured for attaching to a site and for conveying electrical current to a site, and wherein a portion of the electrical flow pathway comprises an electrical conductive material.

2. A dressing apparatus as claimed in claim 1 wherein a portion of the fluid flow pathway is within a conduit and the conduit is flexible.

3. A dressing apparatus as claimed in claims 1 or 2, wherein the electrical conductive material is flexible.

4. A dressing apparatus as claimed in any preceding claim wherein the electrical flow pathway is partially enclosed by a flexible sleeve.

5. A dressing apparatus as claimed in any preceding claim wherein the flexible sleeve is a film.

6. A dressing apparatus as claimed in any preceding claim further comprises an attachment mechanism, wherein the attachment mechanism is attached to the cover of the dressing material and the attachment mechanism is configured to attach a portion of the at least two electrode assemblies to each other.

7. A dressing apparatus as claimed in claim 6 wherein the attachment mechanism is configured such that an edge of the attachment mechanism is a hinge point for moving or pivoting the free distal ends of the at least two electrode assemblies.

8. A dressing apparatus as claimed in claim 7 wherein the edge of the attachment mechanism that is a hinge point for moving or pivoting the free distal ends of the at least two electrode assemblies, is a distal edge of the attachment mechanism.

9. A dressing apparatus as claimed in any one of claims 6 to 8 wherein the conductor pads are pivotable about the attachment mechanism or an edge of the attachment mechanism.

10. A dressing apparatus as claimed in any one of claims 6 to 9 wherein the attachment mechanism or the distal edge of the attachment mechanism is centrally positioned over the dressing material.

11. A dressing apparatus as claimed in any preceding claims wherein the length of the free ends of the at least two electrode assemblies from the attachment mechanism to the proximal edge of the conductor pad is greater than the perpendicular distance from the longitudinal axis of the dressing material to the outer edge of the cover of the dressing material.

12. A dressing apparatus as claimed in any preceding claims wherein the distal end of an electrode assembly, that comprises a conductor pad of an electrode assembly is movable or pivotable between a first configuration wherein the conductor pad is over, the cover of the dressing material of the fluid flow path, and an at least second configuration.

13. A dressing apparatus as claimed in claim 12 wherein in the at least second configuration the conductor pad, or any cover of the conductor pad, is spaced from the cover of the dressing material of the dressing material.

14. A dressing apparatus as claimed in any preceding claim wherein the conductor pad comprises a cover.

15. A dressing apparatus as claimed in any preceding claim wherein the at least two electrode assemblies or the electric flow pathway comprises folds or a concertina mechanism.

16. A dressing apparatus as claimed in claim 15 wherein the folds or concertina mechanism is configured to be expandable between an at least first length and an at least second length, wherein the first length is a shorter length than the second configuration and or a minimum length, and an at least second length that is longer than the length of the first length or is the maximum length of the concertina mechanism.

17. A dressing apparatus as claimed in claim 16 wherein the at least second length is configured to enable the cover of the conductor pad or the conductor pad to be spaced from the cover of the dressing material or the dressing material.

18. A dressing apparatus as claimed in 16 or 17 wherein the at least second length is configured to enable the cover of the conductor pad or the conductor pad to be positioned, at a maximum distance, from the cover of the dressing material or the dressing material.

19. A method for applying both electrical current and negative pressure to a site, comprising using a dressing apparatus as claimed in any preceding claim and further comprises the steps of:-removing any, if present, removable protective layers from the cover of the dressing material;- positioning the dressing material on a site;-securing the dressing material on a site;-removing any, if present, removable protective layers from the cover of the conductor pad of a first electrode assembly;-pivoting or moving, a distal end of a first electrode assembly and positioning the conductor pad of the first said electrode assembly to a site, spaced from the cover of the dressing material;-securing the conductor pad of the said first electrode assembly to a site;-removing any, if present, removable protective layers from the cover of the conductor pad of a second electrode assembly;-pivoting or moving, a distal end of the second electrode assembly and positioning the conductor pad of the second said electrode assembly to a site, spaced from the cover of the dressing material;-securing the conductor pad of the said second electrode assembly to a site.

20. A method for applying both electrical current and negative pressure to a site, further comprises the step of:- expanding the folds of a concertina mechanism of the at least two electrode assemblies to an expanded maximum length.

21. A method for applying both electrical current and negative pressure to a site, further comprises the step of:-pivoting or moving, the conductor pads to be perpendicular to the longitudinal axis of the dressing material, such that a conductor pad from each at least two electrode assemblies is on opposite sides of the dressing material.

22. A method for applying both electrical current and negative pressure to a site, further comprising the steps of:- breaking a perforated join of the at least two electrode assemblies.

23. A method as claimed in claim 22 further comprising the step of:- removing an area of material of the at least two electrode assemblies wherein the said material is at least partially surrounded by the said perforated join.

24. A method as claimed in claim 22 further comprising the step of:- spacing and distancing a portion of the at least two electrode assemblies previously joined by the said perforated join, from a site.41

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