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1066 results about "Skin wound" patented technology

Medical chitosan transparent hydrogel wound dressing as well as preparation and application thereof

The invention relates to a chitosan transparent hydrogel wound dressing for medical use, comprising polyacrylic acid (PAA), polyvinyl ketopyrrolidine (PVP) and chitosan, the weight ratio thereof is 4-20:1.5-15:0.15-3; the wound dressing is transparent flake. The preparation method comprises the following steps: respectively configuring chitosan serum, PVP solution and polyacrylate sodium solution; mixing the 3 solutions and adding evocating agent and cross linking agent to the 3 solutions; pouring the mixture into a mould and obtaining the primary product after reaction at the temperature of 40-75 DEG C; adding preservative to the surface of the primary product and drying the product at the temperature of 40 DEG C; obtaining the wound dressing after cutting, ventilated membrane addition, encapsulation and gamma ray sterilization. The wound dressing can be applied to skin wounds, outside body wounds and tissue engineering. The hydrogel wound dressing of the invention has the characteristics of diminishing inflammation and stanching, and having good hydroscopic property, good conformity and the like, as a result, the wound dressing can partially replace the traditional gauze dressing; the preparation method thereof is simple in operation, low in cost, friendly to the environment and high in economic benefits.
Owner:DONGHUA UNIV

Novel membrane spraying preparation for skin trauma and preparation method

The invention discloses a medicinal membrane spraying preparation for skin trauma and a preparation method thereof, and relates to the field of medicinal preparations. The medicinal membrane spraying preparation consists of a blank membrane spraying preparation and medicinal components dissolved in the blank membrane spraying preparation and having skin trauma treating effective concentration. The medicinal membrane spraying preparation is characterized in that the blank membrane spraying preparation comprises the following components in percentage by mass: 0.3 to 8 percent of polyvinyl alcohol PVA0588, 0.5 to 5 percent of polyvinyl alcohol PVA 1788 and/or 1 to 10 percent of polyvinyl butyral (PVB), 0 to 5 percent of humectant, 0 to 2 percent of fragrance, 0 to 10 percent of viscosity regulator and the balance of solvent; the solvent is 60 to 100 percent ethanol, ethyl acetate, acetone and/or propylene glycol; and the viscosity regulator is polyoxyethylene hydrogenated castor oil RH40or polyoxyethylene castor oil EL35. When the membrane spraying preparation is sprayed on a skin wound, a membrane is formed within one minute, the membrane maintaining time reaches 5 hours, and the preparation can quickly stop blood and clot blood; and the preparation can save the steps of dressing, replacing gauze, sterilizing and the like with injury to the skin, is favorable for wound healing and does not leave scars.
Owner:ARMY MEDICAL UNIV
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