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US 4,306,551 AGranted
Sterile improved bandage and sealant
AssigneeLecTec Corporation
InventorsAlan C. Hymes, Lincoln T. Ong, Garry R. Persons
Life of this patent
Estimating the term…
Abstract
A flexible, liquid absorbent, adhesive bandage includes a backing element and a substrate attached to the backing element. The substrate comprises a homogeneous, hydrophilic, stable matrix including a solid phase formed of a synthetic polymer, a long chain polysaccharide, or a combination thereof. The liquid phase of the matrix consists of a hydric alcohol, carbohydrates or proteins.
Claims9
A flexible, liquid-absorbent, adhesive bandage to be applied to a patient comprising:
- a flexible backing element selected from the group comprised of cotton, paper, synthetic fabric or plastic,
- a substrate attached to said backing element comprising a homogeneous, hydrophilic, stable matrix having adhesive properties for adhesion to the skin and being sufficiently pliant to conform to the shape of the body contours, said matrix including a solid phase comprising about 30% to 50% of the total weight of the matrix and including a synthetic resin selected from the group comprising polyacrylic acid, polyacrylamide and their cogeners, and a liquid phase consisting of a solution or emulsion of carbohydrate and/or protein and comprising from about 40% to 70% by weight of the matrix, said matrix having been sterilized by irradiation, whereby the matrix is capable of effectively absorbing liquid exudate from a wound to which it is applied and being capable of remaining dimensionally stable and tacky during such absorption.
Dependencies are inferred from the claim text.