Abstract: Wound bed preparation in a skin wound area can be carried out by using a hydrogel sheet, wherein the hydrogel sheet is prepared by spreading a hydrogel containing a water-soluble polymer, glycerin, and water on a two-layered laminated film consisting of a polyurethane film and a hydrophobic fiber and the moisture permeability of the hydrogel sheet is 200-2000 (g/m2/24 h).

Abstract: A wound-covering hydrogel material which has excellent stretchability and absorbs exudates from wounds. It can maintain over long a wet environment which is suitable for accelerating the healing of wounds. There is no fear of causing pain or damaging the regenerated skin when the wound-covering hydrogel material is replaced with a fresh one. The wound-covering hydrogel material prepared by spreading a hydrogel comprising a water-soluble semi-synthetic polymer, glycerol and water, on a laminated two-layer film composed of a polyurethane film and hydrophobic fibers. The covering material has a moisture permeability as measured by the cup method in accordance with JIS Z0208 of 500-2,000 (g/m2/24 h).

Abstract: Wound bed preparation in a skin wound area can be carried out by using a hydrogel sheet, wherein the hydrogel sheet is prepared by spreading a hydrogel containing a water-soluble polymer, glycerin, and water on a two-layered laminated film consisting of a polyurethane film and a hydrophobic fiber and the moisture permeability of the hydrogel sheet is 200-2000 (g/m2/24 h).

Abstract: An apparatus and a method for simulatively measuring an environment in a microspace between human skin and a wound dressing. The simulative environment-measuring apparatus includes a constant temperature-and-humidity chamber (14); a heat exchanger (12) disposed in the chamber; a constant temperature water bath (10) and a pump (11) for supplying warm water to the heat exchanger; and a container (1) set on the heat exchanger. The container holds a water retentive member (2) therein, and is covered with a water vapor diffusion-controlling member (4). A microspace (6) formed between the water vapor diffusion-controlling member and a wound dressing (5) is a simulatively reproduced space between human skin and the wound dressing. A thin temperature-and-humidity sensor (7) is set in the microspace to measure temperature and humidity. When plural containers are used, the environments of plural wound dressings can be measured at once.

Abstract: There are provided an apparatus and a method for simulatively measuring an environment in a microspace between a human skin and a wound dressing. The simulative environment-measuring apparatus comprises a constant temperature-and-humidity chamber 14 for controlling an external environment; a heat exchanger 12 disposed in the chamber 14; a constant temperature water bath 10 and a pump 11 for supplying warm water to the heat exchanger; and a container 1 which is set on the heat exchanger 12 and is easily detachable therefrom. The container 1 holds a water retentive member 2 therein, and is covered at its upper opening with a water vapor diffusion-controlling member 4. A microspace 6 formed between the water vapor diffusion-controlling member 4 and a wound dressing 5 placed on the member 4 is a simulatively reproduced space between a human skin and the wound dressing 5. A thin temperature-and-humidity sensor 7 is set in this microspace 6 to measure temperature and humidity with time.

Abstract: A wound-covering hydrogel material which has excellent stretchability and absorbs exudates from wounds. It can maintain over long a wet environment which is suitable for accelerating the healing of wounds. There is no fear of causing pain or damaging the regenerated skin when the wound-covering hydrogel material is replaced with a fresh one. The wound-covering hydrogel material prepared by spreading a hydrogel comprising a water-soluble semi-synthetic polymer, glycerol and water, on a laminated two-layer film composed of a polyurethane film and hydrophobic fibers. The covering material has a moisture permeability as measured by the cup method in accordance with JIS Z0208 of 500-2,000 (g/m2/24 h).