Back to results
US 7,076,282 B2Granted
Bioadhesive compositions and biomedical electrodes containing them
AssigneeFirst Water Limited
InventorsHugh Semple Munro, Mohammed Yasin
Life of this patent
Estimating the term…
Abstract
Bioadhesive Compositions which comprise a hydrophobic polymer wherein the concentration of the polymer at the surface of the adhesive is greater than its concentration in the bulk of the adhesive are described; and biomedical electrodes, fixation products and wound dressings containing them.
Claims22
A bioadhesive composition comprising:
- (a) an aqueous plasticiser, and
- (b) a copolymer of:
- a first hydrophilic unsaturated water-soluble monomer, which has the formula
- wherein R1 is an optionally substituted hydrocarbon moiety, R2 is hydrogen or an optionally substituted methyl or ethyl group, and M is hydrogen or a cation, and
- a second hydrophilic unsaturated water-soluble monomer, which has the formula
- wherein R5 is hydrogen or an optionally substituted methyl or ethyl group, R6 is hydrogen or a cation and R7 is an optionally substituted alkylene moiety of 1 to 4 carbon atoms, and
- a cross-linking agent;
- the composition having:
- (i) a water activity in the range of 0.4 to 0.9;
- (ii) an elastic modulus at 1 rad/s in the range of 700 to 15,000 Pa;
- (iii) an elastic modulus at 100 rad/s in the range of 2000 to 40,000 Pa;
- (iv) a viscous modulus at 1 rad/s in the range of 400 to 14,000 Pa;
- (v) a viscous modulus at 100 rad/s in the range of 1000 to 35,000 Pa;
- wherein the viscous modulus is less than the elastic modulus in a frequency range of 1 to 100 rad/s.
11 more elements
Dependencies are inferred from the claim text.