US 7,531,035 B2 · Resorbable ceramic compositions

Abstract

Ceramic precursor compositions and chemically bonded ceramic (CBC) materials, especially Ca-based, and a composite biomaterial suitable for orthopaedic applications. The CBC-system includes a binding phase (chemical cement) and additional phases with specified chemistry imparting to the biomaterial the ability of initial strength followed by interaction with the body tissue including body liquid, to form a resorbable or partly resorbable biomaterial. The ceramic precursor composition includes at least one silicate with Ca as the main cation with a resorption rate less or equal to that of the bone in-growth rate. The silicate will form the binding phase of the cured material. Implants and surface coated devices are also disclosed. The cured material exhibits a compressive strength exceeding 100 MPa.

Claims25

Dependent claims

A ceramic precursor composition used for manufacturing resorbable or partly resorbable high-strength bloelements, comprising:

at least one silicate with Ca as the main cation with a resorption rare loss or equal to that of bone in-growth rate, the at least one silicate being the main binding phase in a cured material;
at least one second binding phase based on phosphates and/or sulphates in an amount of less than 20 weight-% of the main binding phase, the at least one second binding phase comprising a soluble glass;
and
optionally, additives selected from the group consisting of an inert phase, additives that make a cured material radiopaque, and mixtures thereof, wherein,
the at least one Ca-silicate is present in an amount of greater than 50 weight-% of the ceramic precursor composition.

2 more elements

Dependencies are inferred from the claim text.

Resorbable ceramic compositions

Life of this patent

Resorbable ceramic compositions

Life of this patent

Abstract

Claims25