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US 5,176,956 AGranted
Biomedical apparatus having fatty acid dimer derived skin compatible adhesive composition thereon
AssigneeMedtronic, Inc.
InventorsAllan H. Jevne, Arthur J. Coury, Patrick T. Cahalan
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Abstract
An improved biomedical appliance having disposed on a skin-contacting, operant portion thereof, a film or layer of a skin compatible, tacky, pressure sensitive polymeric adhesive, the reaction product consisting of at least one fatty acid dimer based or derived component and a suitable co-reactant. Electrodes, surgical tapes, TENS devices and iontophoresis devices employing the adhesive are disclosed.
Claims32
A biomedical apparatus comprising:
- (a) an operant surface adapted to be adhered to a patient's skin;
- and
- (b) a layer of adhesive on a portion of said operant surface, said adhesive a hydrophobic, polymeric, pressure sensitive, tacky, skin-compatible composition consisting essentially of the reaction product of:
- (1) a difunctional fatty acid-derived dimer of the structure X--D--X wherein X is a reactive functionality selected from the group consisting of amine, amide, ester, isocyanate, acid chloride, hydroxyl, carboxylic acid, chloroformate, and carbonate and D is a divalent, aliphatic nucleus resulting from the dimerization of long-chain fatty acids;
- (2) a compatible polymer-forming co-reactant, difunctional in groups reactive with said functionalities X and selected from the group consisting of amine, amide, ester, isocyanate, acid chloride, hydroxyl, carboxylic acid, chloroformate, and carbonate and said co-reactant having an aliphatic nucleus comprising about 18 carbon atoms or more;
- (3) between 0 and 10 equivalent percent of a crosslinking reactant which is at least trifunctional.
3 more elements
A biomedical apparatus comprising:
- (a) an operant surface adapted to be adhered to a patient's skin;
- and
- (b) a layer of adhesive on a portion of said operant surface, said adhesive a hydrophobic, polymeric, pressure sensitive, tacky, skin-compatible composition consisting essentially of the reaction product of:
- (1) a difunctional fatty acid-derived dimer of the structure X--D--X wherein X is a reactive functionality selected from the group consisting of isocyanate, and hydroxyl and D is a divalent, aliphatic nucleus resulting from the dimerization of long-chain fatty acids;
- (2) a compatible polymer-forming co-reactant, difunctional in groups reactive with said functionalities X and selected from the group consisting of isocyanate and hydroxyl and said co-reactant having an aliphatic nucleus having at least about 18 carbon atoms;
- (3) between 0 and 10 equivalent percent of a crosslinking reactant which is at least trifunctional.
3 more elements
Dependencies are inferred from the claim text.