Composite compression and support dressing

Claim 2

A composite compression and support dressing comprising: an extensible bandage of suitable size and shape to facilitate wrapping said bandage helically around an affected body part; and, a thin, fluid-interactive, hydrocolloid adhesive composition laminated to one side of said bandage.

Claim 3

The dressing of claim 1 wherein said extensible bandage is a woven, elasticated bandage.

Claim 4

The dressing of claim 1 or 2 wherein said fluid-­interactive hydrocolloid adhesive composition comprises a substantially homogeneous mixture of mineral oil, one or more polyisobutylenes, said polyisobutylenes optionally being mixed with an elastomer, one or more styrene radial or block type copolymers, one or more water soluble hydrocolloid gums, one or more water swellable cohesive strengthening agents and one or more tackifiers.

Claim 5

The dressing of claim 1 or 2 wherein said fluid-interactive hydrocolloid adhesive composition comprises a substantially homogeneous mixture of from about 5 to about 30 percent by weight of one or more polyisobutylenes or a blend of one or more polyisobutylenes and butyl rubber, from about 3 to about 30 percent by weight of one or more styrene radial or block type copolymers, from about 8 to about 40 percent by weight of mineral oil, from about 15 to about 65 percent by weight of one or more water soluble hydrocolloid gums, up to about 15 percent by weight of one or more water swellable cohesive strengthening agents provided that said water soluble hydrocolloid gums and said water swellable cohesive strengthening agents together are present at from about 15 to about 65 percent by weight of said composition, from about 7.5 to about 15 percent by weight of a tackifier, and up to about 5 percent by weight of optional ingredients selected from antioxidants, deodorants, medicaments, skin protective agents and reinforcing agents.

Claim 6

The dressing of claim 3 or 4 wherein said water soluble hydrocolloid gum is selected from sodium carboxy­methylcellulose, pectin, gelatin, guar gum, locust bean gum, gum karaya, and mixtures thereof and said water swellable cohesive strengthening agent is selected from cross-linked sodium carboxymethylcellulose, starch-acrylonitrile graft copolymers, and cross-linked dextran.

Claim 7

The dressing of claim 5 wherein said styrene copolymer is a styrene-isoprene-styrene or a styrene-­butadiene-styrene block polymer.

Claim 8

The dressing of claim 8 wherein said styrene copolymer is a styrene-isoprene-styrene block copolymer.

Claim 9

The dressing of claim 7 wherein said poly­isobutylenes are one or more low molecular weight polyiso­butylenes.

Claim 10

The dressing of any preceding claim further comprising a latex adhesive layer between said bandage and said hydrocolloid adhesive composition to provide cohesion therebetween.