Physiologically compatible adhesive composition
AssigneeC. R. Bard, Inc.
InventorsDouglas Allen, Jr., Eric Flam
Life of this patent
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Abstract
A new breathable, conformable, polymeric adhesive composition is disclosed which comprises a self-sustaining pressure sensitive adhesive material and a hydrophilic filler, wherein the adhesive material forms a polymeric matrix characterized by the physical encapsulation of the hydrophilic filler within the matrix.
Claims27
A polymeric composition, for providing an elastomeric adhesive, breathable, cohesive, conformable, self-supporting body fluid generally non-degradable composition for use as a medical device in adherent contact with the skin, which comprises an adhesive product selected from the group consisting of a polyurethane adhesive, a silicone adhesive, an acrylic adhesive based on a copolymer of 2-ethyl hexyl acrylate, a polyvinylether adhesive, and an adhesive based on styrene copolymers, said adhesive product formed by solidifying a substantially non-aqueous liquid adhesive precursor, said polyurethane adhesive product derived from the generally non-aqueous reaction of an organic polyisocyanate, and a polyoxyalkylene polyol moiety comprising a mixture of a major portion of polyol having a diol functionality and a minor portion of polyol of at least triol functionality, said adhesive product having incorporated a hydrophilic filler wherein there is provided a polymeric matrix characterized by the physical encapsulation of the hydrophilic filler within the polymeric matrix.
A method for providing an elastomeric adhesive, breathable, cohesive, conformable, self-supporting, body fluid generally non-degradable composition for use as a medical device in adherent contact with the skin, comprising the steps of forming a substantially non-aqueous liquid precursor of a polymeric pressure sensitive adhesive material selected from the group consisting of polyurethane adhesives, silicone adhesives, acrylic adhesives based on copolymers of 2-ethyl hexyl acrylate, polyvinylether adhesives and adhesives based on styrene copolymers, dispersing in said precursor a hydrophilic filler, and solidifying said filled precursor to form a polymeric composition comprising a polymeric matrix having the hydrophilic filler encapsulated therein, said polyurethane precursor being an organic polyisocyanate solidified by a generally non-aqueous reaction with a polyoxyalkylene polyol moiety comprising a mixture of a major portion of a polyol having a diol functionality and a minor portion of a polyol of at least triol functionality.
A method for providing an elastomeric adhesive, breathable, cohesive, conformable, self-supporting, body fluid generally non-degradable composition for use as a medical device in adherent contact with the skin, comprising the steps of forming an aqueous liquid precursor of an acrylic adhesive based on copolymers of 2-ethyl hexyl acrylate, dispersing in said precursor a hydrophilic filler, and solififying said filled precursor to form a polymeric composition comprising a polymeric matrix having said hydrophilic filler encapsulated therein.
A polymeric composition for providing an elastomeric adhesive, breathabel, cohesive, conformable, self-supporting, body fluid generally non-degradable composition for use as a medical device in adherent contact with the skin, which comprises an acrylic adhesive based on a copolymer of 2-ethyl hexyl acrylate, said adhesive derived from an aqueous liquid precursor of said copolymer, said adhesive having incorporated therein a hydrophilic filler wherein there is provided a polymeric adhesive matrix characterized by the physical encapsulation of said hydrophilic filler within said polymeric matrix.
Dependencies are inferred from the claim text.