Patent ID: 6670293
Filing Date: 2003-12-30
Classification: A61L,C04B

Abstract:
A kit for producing a self-setting bone cement comprising:water; an acid source selected from the group consisting of citric acid, malic acid, phosphoric acid, fumaric acid, lactic acid, succinic acid and a combination thereof; and a powdered composition containing at least two powdered components mixed together, at least one component containing a calcium phosphate source and at least one component containing a phosphate source, said at least two powdered components capable of reacting with said water to form said self-setting bone cement and said mixed at least two powdered components containing a carbonate selected from the group consisting of sodium carbonate, sodium bicarbonate, calcium carbonate, calcium bicarbonate and a combination thereof, wherein the ratio of the weights of the acid source to the carbon are chosen such that the final result of their reaction does not change the final pH of the mixture of the at least two powdered components and water with the ratio of acid to the weight of carbonate being about 0.7.