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US 5,820,632 AGranted
Prepared calcium phosphate composition and method
AssigneeNorian Corporation
InventorsBrent R. Constantz, Mark T. Fulmer, Bryan M. Barr
Life of this patent
Estimating the term…
Abstract
Setting times of calcium phosphate cement compositions are enhanced by the addition of phosphate or carbonate lubricant compositions. Methods for preparing the cement compositions are provided.
Claims4
A kit for use in producing a rapid setting calcium phosphate mineral, said kit consisting of:
- (a) calcium and phosphate sources as dry ingredients, said phosphate source comprising at least one of monocalcium phosphate monohydrate and orthophosphoric acid free of uncombined water;
- and
- (b) a wet lubricating medium consisting of a solution of sodium phosphate or sodium carbonate, wherein the concentration of said sodium phosphate or sodium carbonate in said solution ranges from 0.01 to 2 M.
A kit for use in producing a rapid setting calcium phosphate mineral, said kit consisting of:
- (a) a calcium source and a phosphate source as dry ingredients, said calcium source comprising at least one of tetracalcium phosphate, tricalcium phosphate and calcium carbonate and said phosphate source comprising at least one of monocalcium phosphate monohydrate and orthophosphoric acid free of uncombined water;
- and
- (b) a wet lubricating medium consisting of a solution of sodium phosphate or sodium carbonate, wherein the concentration of said sodium phosphate or sodium carbonate in said solution ranges from 0.01 to 2M.
A kit for use in producing a rapid setting calcium phosphate cement that is capable of setting in 12 minutes, said kit consisting of:
- (a) calcium and phosphate sources as dry ingredients, said phosphate source comprising at least one of monocalcium phosphate monohydrate and orthophosphoric acid free of uncombined water;
- and
- (b) a wet lubricating medium consisting of a solution of sodium phosphate or sodium carbonate in an amount ranging from about 0.01 to 2.0 M.
Dependencies are inferred from the claim text.