Burn dressing
AssigneeNational Patent Development Corporation
InventorMark J. D'Andrea
Life of this patent
Estimating the term…
Abstract
A two package system useful in forming a rapid plastic film, i.e., a burn dressing or burn bandage, on the burn of the skin. One package contains particulate hydrophilic polymer such as 2-hydroxyethyl methacrylate polymer and the other package contains a liquid mixture of an inert, high boiling, organic liquid and water desirably in a weight ratio of 70:30 to 30:70. The particulate polymer and liquid mixture are desirably applied to the burn simultaneously, or by first applying the liquid mixture followed by application of the polymer. A plastic film, burn dressing, can result in a few minutes.
Claims29
A two-package system useful in forming a non-tacky, non-toxic, non-stinging plastic burn dressing directly on the wound of the skin which consists essentially of:
- (a) a first package containing particulate hydrophilic polymer having the following characteristics:
- lower-alkanol insolubility, water-swellability, water-insolubility, and a molecular weight above about 50,000;
- and
- (b) a second package used with said first package and containing liquid comprised of from 20 to 80 weight percent water and from 80 to 20 weight percent of an inert organic liquid, said organic liquid being characterized by a boiling point of at least about 120.degree. C. and water-miscibility.
A non-tacky, non-irritating, innocuous, non-stinging, pinhole-free burn dressing which comprises a plastisol formed by contacting a liquid comprised of 20 to 80 weight percent water and 80 to 20 weight percent organic vehicle which (i) is non-toxic and (ii) is characterized by a boiling point of at least about 120.degree. C.;
- with a particulate hydrophilic polymer characterized by (i) lower-alkanol solubility, (ii) water-insolubility, (iii) water-swellability, and (iv) an average molecular weight of at least about 50,000;
- the concentration of said polymer to said vehicle being at least sufficient to form a non-tacky plastisol.
In combination, a burned tissue surface and in contact therewith a non-tacky, non-irritating, innocuous, non-stinging, pinhole-free burn dressing therefor, said burn dressing comprising a plastisol formed by contacting a liquid comprised of 20 to 80 weight percent water and 80 to 20 weight percent organic vehicle which (i) is non-toxic and (ii) is characterized by a boiling point of at least about 120.degree. C.;
- with a particulate hydrophilic polymer characterized by (i) lower-alkanol solubility, (ii) water-insolubility, (iii) water-swellability, and (iv) an average molecular weight of at least about 50,000;
- the concentration of said polymer to said vehicle being at least sufficient to form a non-tacky plastisol.
A process of treating a burned tissue surface comprising applying to the burned surface (1) a liquid comprised of 20 to 80 weight percent water and 80 to 20 weight percent organic liquid which (i) is non-toxic and (ii) is characterized by a boiling point of at least about 120.degree. C.;
- (2) a particulate hydrophilic polymer characterized by (i) lower-alkanol solubility (ii) water-insolubility, (iii) water-swellability, and (iv) a moecular weight of at least about 50,000;
- allowing said liquid vehicle to solvate said polymer in situ on the burned surface to form a gelled, non-tacky, innocuous, non-stinging, plastisol burn dressing which prevents infection of the burn by microorganisms;
- (3) the weight ratio of said polymer to said liquid which forms the burning dressing being from 2:3 to 3:1.
Dependencies are inferred from the claim text.