Hard tissue substitute composition
AssigneeShowa Denko K.K.
InventorsYoshitaka Kimura, Yuji Furuta, Kunihiro Miyazaki, Tadashi Hiraiwa
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Abstract
A composition for use in forming a hard tissue substitute comprising (A) a powder ingredient mainly comprised of Ca.sub.n+2 (PO.sub.4).sub.2 O.sub.n-1, where n is from 1.9 to 4.9 and (B) an aqueous solution of an organic acid, preferably of the TCA cycle, or a polymer of an organic acid. This composition has a good affinity with living organisms, a high compressive strength, and a low disintegration rate.
Claims16
A composition which is hardenable by a chelate reaction for use in forming a hard tissue substitute in situ comprising:
- (A) a powder ingredient mainly comprised of Ca.sub.n+2 (PO.sub.4).sub.2 O.sub.n-1 where n is from 1.9 to 4.8, and
- (B) an aqueous solution of an organic acid or a polymer thereof,
- wherein said aqueous solution (B) comprises from 25 to 60% by weight of said organic acid or polymer thereof, and wherein the composition is mixed in a ratio of 1.0 to 2.2 parts by weight of said powder ingredient (A) per 1.0 part by weight of said aqueous solution (B).
A composition which is hardenable by a chelate reaction for use in forming a hard tissue substitute in situ comprising:
- (A) a powder ingredient mainly comprised of tetracalcium phosphate, and
- (B) an aqueous solution of an organic acid or a polymer thereof,
- wherein said aqueous solution (B) comprises from 25 to 60% by weight of said organic acid or polymer thereof, and wherein the composition is mixed in a ratio of 1.0 to 2.2 parts by weight of said powder ingredient (A) per 1.0 part by weight of said aqueous solution (B).
Dependencies are inferred from the claim text.