Water-activated casting material
AssigneeMinnesota Mining and Manufacturing Company
InventorsDonald C. Garwood, Shiraz A. Kathiriya
Life of this patent
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Abstract
An orthopedic casting material is disclosed having improved strength and porosity characteristics. The casting material comprises a fabric which is made from a high modulus fiber and has a thickness between 0.020 and 0.045 inches and a mesh size of 20 to 200 openings per square inch. The fabric is impregnated with a reactive resin which hardens by wetting with a curing agent.
Claims8
An orthopedic casting material comprising a fabric made from a fiber having an initial modulus of elasticity greater than 8.times.10.sup.6 pounds per square inch, said fabric having a thickness between 0.020 and 0.045 inch and a mesh size of 20 to 200 openings per square inch and a reactive fluid polyisocyanate prepolymer resin impregnated in said fabric which hardens when said resin is wetted with water.
A method of forming an orthopedic cast on a body member comprising the steps of:
- 1. covering said body member with an inner protective sleeve comprising an air permeable fabric;
- and
- 2. wrapping said body member with an orthopedic casting material comprising a fabric made from a fiber having an initial modulus of elasticity greater than 8.times.10.sup.6 pounds per square inch, said fabric having a thickness between 0.020 and 0.045 inch and a mesh size of 20 to 200 openings per square inch and a reactive fluid polyisocyanate prepolymer resin impregnated in said fabric which has been wetted with water to harden said resin after said wrapping is completed.
Dependencies are inferred from the claim text.