Wound care arrangement and covering unit therefor

Abstract

The invention relates to a wound care arrangement comprising a covering unit that can be fixed on the skin surrounding a wound and that serves for producing a closed wound space comprising the wound, and a suction connection via which a vacuum can be produced in the wound space, wherein the covering unit is permeable to water vapor at least in sections.

1 . Wound care arrangement having a covering unit that can be attached to the skin surrounding a wound and used for producing an enclosed wound space comprising the wound, and a suction connection across which a negative pressure can be generated in the wound space, characterized in that the covering unit is water vapor permeable, at least in sections. 
     
     
         2 . Wound care arrangement according to  claim 1 , characterized in the water vapor permeability of the covering unit is, at least in sections, more than 300 g/m2/24 h or more, in particular 500 g/m2/24 h or more, particularly preferred 750 g/m2/24 h. 
     
     
         3 . Wound care arrangement according to  claim 1  or  2 , characterized in that the water vapor permeability of the covering unit is less than 10,000 g/m2/24 h, in particular less than 5,000 g/m2/24 h. particularly preferred 3,000 g/m2/24 h or less. 
     
     
         4 . Wound care arrangement according to one of the preceding claims, characterized in that the covering unit comprises a preferably transparent cover film having a thickness of 0.5 μm to 200 μm, in particular 1 μm to 100 μm. 
     
     
         5 . Wound care arrangement according to one of the preceding claims, characterized in that the elongation at rupture of the covering unit is 100% or more. 
     
     
         6 . Wound care arrangement according to one of the preceding claims, characterized in that the static friction coefficient of the covering unit is between 0.8 and 1.5 (ASTM 1894-08). 
     
     
         7 . Wound care arrangement according to one of the preceding claims, characterized in that the static friction coefficient of the covering unit is between 0.7 und 1.2 (ASTM 1894-08). 
     
     
         8 . Wound care arrangement according to one of the preceding claims, characterized in that the covering unit comprises a polyurethane polymer, in particular an aromatic polyurethane polymer. 
     
     
         9 . Wound care arrangement according to one of the preceding claims, characterized by a filler material for filling the wound space placed between the wound base and the covering unit, preferably, on the side of the suction connection facing the filler material, a drainage layer being provided for introduction of the exudate to be removed by aspiration from the filler material into at least one aspiration orifice of the suction connection. 
     
     
         10 . Wound care arrangement according to one of the preceding claims, characterized in that the covering unit is associated with an adhering fastening means for the adhesive attachment of the covering unit to the skin surrounding the wound. 
     
     
         11 . Wound care arrangement according to  claim 10 , characterized in that the fastening means comprises a separate adhesive film, in particular a polyurethane film, by means of which the wound covering can be attached after application to the wound with respect to the skin surrounding the wound. 
     
     
         12 . Wound care arrangement according to one of the preceding claims, characterized in that the covering unit comprises a film tube, into which a human extremity can be introduced. 
     
     
         13 . Wound care arrangement according to  claim 12 , characterized in that for forming a truncated arrangement, one axial end of the film tube is closed, in particular hermetically. 
     
     
         14 . Wound care arrangement according to one of the preceding claims, characterized in that the covering unit is associated with a support arrangement, in particular supporting film, which is detachable from the wound after application to it. 
     
     
         15 . Wound care arrangement according to one of the preceding claims, characterized in that the suction connection has an aspiration orifice facing the wound space during use and a connecting device preferably designed as a tube stub for producing a connection between the aspiration orifice and an aspiration tube. 
     
     
         16 . Wound care arrangement according to  claim 15 , characterized in that the aspiration orifice penetrates a flanged contact area of the suction connection and the contact area has, preferably surrounding the aspiration orifice and preferably equipped with an adhesive means, a fastening area, by means of which the suction connection can be glued to a boundary area of the covering unit facing away from the wound space. 
     
     
         17 . Wound care arrangement according to one of the  claims 12  to  16 , characterized in that the film tube is completely closed in the peripheral direction and preferably after application to the wound, is cut open, in order to obtain a perforation associated with the aspiration orifice, the perforation preferably being surrounded by the fastening area of the suction connection during use. 
     
     
         18 . Covering unit for use in a wound care arrangement according one of the preceding claims, characterized by a water vapor permeable polyurethane film having water vapor permeability of preferably 3000 g/m2/24 h.