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US 4,239,113 AGranted
Composition for the preparation of bone cement
AssigneeKulzer GmbH
InventorsAlbert Gross, Werner Ege
Life of this patent
Estimating the term…
Abstract
A bone cement in pliable and moldable form which when applied to bone and cured has superior characteristics containing an admixture of methylmethacrylate copolymers, methylmethacrylate, and between 15 and 75% by weight of an inorganic composition of between about 90 and 99% of a bio-active glass ceramic powder having a particle size of 10-200 micrometer and between 1 and 10% of vitreous mineral fibers having a length of less than 20 mm. The composition also contains a curing catalyst and, preferably, an accelerator.
Claims13
An uncured bone cement composition which when cured forms a bone cement comprising between about
- (i) 15% and 75% by weight of a mixture of inorganic materials consisting essentially of between about 90 and 99% by weight of a powdered bio-active glass ceramic of a particle size between about 10 and 200 micrometer,
- said bio-active glass ceramic consists essentially of between about 20 and about 60% by weight of SiO.sub.2, between about 5 and 40% P.sub.2 O.sub.5, between about 2.7 and 20% Na.sub.2 O, between about 0.4 and 20% K.sub.2 O, between about 2.9 and 30% MgO, and between about 5 and 40% CaO,
- and between about 5 and 10% by weight of vitreous mineral fibers between about 2 and 5 mm long, admixed with
- (ii) a mixture of copolymers of methylmethacrylate and methyl acrylate.
1 more element
Dependencies are inferred from the claim text.