Orthopedic cast composed of an alkoxysilane terminated resin
AssigneeMinnesota Mining and Manufacturing Company
InventorsAndrew Callinan, Matthew T. Scholz
Life of this patent
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Abstract
The present invention provides a water-curable resin composition for use in an orthopedic cast composed of a water-reactive alkoxysilane terminated resin, having at least one hydrolyzable group per molecule. The resin composition has a viscosity of no greater than about 500 Pa-s under ambient conditions and contains less than about 1 wt-% of a solvent, based on the total weight of the resin composition.
Claims19
An orthopedic casting material comprising:
- (a) a water-curable resin composition containing less than about 1 wt-% of a solvent, said resin having a viscosity of no greater than about 500 Pa-s under ambient conditions, said resin composition comprising:
- (i) a water-reactive alkoxysilane terminated prepolymer having at least one hydrolyzable group per molecule;
- and
- (ii) an effective amount of a catalyst to catalyze the polymerization of said alkoxysilane terminated prepolymer upon contact with water;
- and
- (b) a porous flexible substrate coated with the water-curable resin composition, wherein said orthopedic casting material is sufficiently porous to enable water to permeate a roll of said casting material during water activation and cause said resin to cure, and wherein said orthopedic casting material is sufficiently porous to allow air and moisture vapor to move through the material after it has been cured.
A method of preparing an orthopedic support material comprising coating a porous flexible substrate with a water-curable resin composition containing less than about 1 wt-% of a solvent and having a viscosity of no greater than about 500 Pa-s under ambient conditions, said resin composition comprising:
- (a) a water-reactive alkoxysilane terminated prepolymer having at least one hydrolyzable group per molecule;
- and
- (b) an effective amount of a catalyst to catalyze the polymerization of said alkoxysilane terminated prepolymer upon contact with water.
A method of forming an orthopedic cast on a body part comprising:
- (a) covering the body part with a protective sleeve;
- (b) providing an orthopedic casting material comprising a porous flexible substrate coated with a water-curable resin composition containing less than about 1 wt-% of a solvent, said resin having a viscosity of no greater than about 500 Pa-s under ambient conditions, said resin composition comprising:
- (i) a water-reactive alkoxysilane terminated prepolymer having at least one hydrolyzable group per molecule;
- and
- (ii) an effective amount of a catalyst to catalyze the polymerization of said alkoxysilane terminated prepolymer upon contact with water;
- (c) activating the orthopedic casting material with water;
- and
- (d) wrapping the body part with the water-activated orthopedic casting material, wherein said orthopedic casting material is sufficiently porous to enable water to permeate a roll of said casting material during water activation and cause said resin to cure, and wherein said orthopedic casting material is sufficiently porous to allow air and moisture vapor to move through the material after it has been cured.
A water-curable resin-coated sheet comprising:
- (a) a water-curable resin composition containing less than about 1 wt-% of a solvent and having a viscosity of no greater than about 500 Pa-s under ambient conditions, said resin composition comprising:
- (i) a water-reactive alkoxysilane terminated prepolymer having at least one hydrolyzable group per molecule;
- and
- (ii) an effective amount of a catalyst to catalyze the polymerization of said alkoxysilane terminated prepolymer upon contact with water;
- and
- (b) a porous flexible substrate coated with the water-curable resin composition.
Dependencies are inferred from the claim text.