Hydrogel

Abstract

The invention is related to gel preparations capable of absorbing as well as releasing liquid, and the use of such gel preparations in the treatment of wounds.

1 - 46 . (canceled) 
     
     
         47 . A preparation for wound healing comprising a hydrogel comprising 1-3% by weight of a polymer complying with the USP Carbomer 940 series and water, said hydrogel having a pH value in the range of 4 to 6.5, wherein the capability of the preparation to release liquid is greater than its capability to absorb liquid when applied to a wound, as measured under conditions in accordance with EN 13726-1:2002. ; the preparation does not contain liposomes and iodine; and the preparation comprises a polymer complying with the USP Carbomer 940 series, wherein the hydrogel has a pH value in the range of 4 to 6.5. 
     
     
         48 . The preparation according to  claim 47 , wherein the preparation further comprises one or more additives selected from the group consisting of adjuvants, conserving agents, antioxidants, consistency forming additives and pH-adjusting agents. 
     
     
         49 . The preparation according to  claim 47 , wherein the preparation absorbs liquid absorption of the hydrogel is less than 8% liquid, as tested in accordance with EN 13726-1:2002. 
     
     
         50 . The preparation according to  claim 47 , wherein the preparation absorbs liquid absorption of the hydrogel is less than 15% liquid, as tested in accordance with EN 13726-1:2002. 
     
     
         51 . A wound dressing comprising a preparation according to  claim 47 . 
     
     
         52 . A method for treating a wound, wherein said method comprises administering, to the wound, a hydrogel preparation for wound healing according to  claim 47  comprising a polymer complying with the USP Carbomer 940 series; wherein the hydrogel has a pH value in the range of 4 to 6.5; the capability of the hydrogel to release liquid is greater than its capability to absorb liquid; and the hydrogel preparation does not include a liposome. 
     
     
         53 . The preparation according to  claim 47 , further comprising at least one antiseptic agent. 
     
     
         54 . The preparation according to  claim 53 , wherein the antiseptic agent comprises at least one compound selected from the group consisting of oxygen- and halogen-releasing compounds and metal compounds. 
     
     
         55 . The preparation according to  claim 54 , wherein the antiseptic agent is an iodine complex. 
     
     
         56 . The preparation according to  claim 55 , wherein the iodine complex is PVP-iodine. 
     
     
         57 . The preparation according to  claim 56 , further comprising liposomes. 
     
     
         58 . The preparation according to  claim 57 , wherein the liposomes are phospholipid-based liposomes. 
     
     
         59 . The preparation according to  claim 47 , further comprising a wound-healing promoting agent. 
     
     
         60 . The preparation according to  claim 47 , wherein said preparation is free of liposomes. 
     
     
         61 . The preparation according to  claim 47 , wherein the polymer is Carbopol 980NF. 
     
     
         62 . The preparation according to  claim 47 , wherein the pH is in the range of 5 to 6. 
     
     
         63 . A wound dressing comprising a hydrogel comprising 1-3% by weight of a polymer complying with the USP Carbomer 940 series and water, said hydrogel having a pH value in the range of 4 to 6.5. 
     
     
         64 . The wound dressing of  claim 63 , wherein the polymer is Carbopol 980NF. 
     
     
         65 . The wound dressing according to  claim 63 , further comprising a film forming substance. 
     
     
         66 . The wound dressing according to  claim 63 , further comprising at least one antiseptic agent. 
     
     
         67 . The wound dressing according to  claim 66 , wherein the antiseptic agent comprises at least one compound selected from the group consisting of oxygen- and halogen-releasing compounds and metal compounds.