Wound dressing for combined negative pressure and fluid delivery system

A wound dressing device for a combined negative pressure and fluid delivery healing technique, the wound dressing comprising:

• a porous sheet (101) having a top planar surface (201), a thickness (202) across which intermediate hollow channels/drills (205) are present so as to equally distribute negative pressure and fluid flow on the top planar surface, and a bottom uneven surface (203) having a surface pattern (204) meant to lie on the surface of a wound, wherein the pattern (204) of the bottom uneven surface (203) is a wavy pattern and/or any other regular and/or irregular surface protrusion configured to create intermediate gaps between the wound surface and the bottom surface (203) of the porous sheet through which fluid can flow over the wound surface;
• flexible sheets (102) having a planar flexible surface comprising a first sheet (103) and a second sheet (104) attached to each other at merge areas (304), the said second sheet (104) having downward hollow protruded channels (301), said flexible sheets (102) having multiple openings (305) for providing negative pressure or fluid during negative pressure wound therapy and fluid therapy;
• such that said downward hollow protruded channels (301) of the second sheet (104) having sectional profiles (206) as that of the hollow channels/drills (205) of the porous sheet (101) such that a male-female connection is established between the said protruded channels (301) and the said hollow channels/drills (205);
• said openings (305) covered with a conduit (105) allowing the attachment of multichannel tubes (106) to the wound dressing from the source of negative pressure and source of fluid;
• and
• a side adhesive tapes (107) meant for sealing the edges of the two flexible sheets (102) together with the underneath porous sheet (101) within the peripheral skin area of wound (703),
• wherein the multiple openings (305) comprises
• a first opening (306) for negative pressure supply adapted to create holes in the one of said merge areas (304) of said first sheet (103) and said second sheet (104) simultaneously isolating the negative pressure supply from the rest of the space (307) between the first sheet (103) and second sheet (104);
• and
• a second opening (308) for fluid supply positioned on the first sheet (103) without creating a hole in the second sheet (104) thereby supplying fluids via second opening (308) between the first sheet (103) and second sheet (104) without affecting the negative pressure wound therapy;
• such that said fluid spreads over said second sheet and flows through the male-female connection established between the said protruded channels (301) and the said hollow channels/drills (205) to the wound site.