| 摘要 |
<p>The present invention relates to a bone fixation material comprising a polymer which is biodegradable and bioabsorbable into the living body organism, a hydroxyapatite and optionally an alkaline inorganic compound, having an initial bending strength at break of more than 250 MPa, maintaining its strength more than 3 months in a living body organism and being biodegradable and bioabsorbable into and eliminatable from an organism within a range of 6 months to 3 years and a process of preparing a bone fixation material comprising: (A) melting a polymer which is biodegradable and bioabsorbable into and eliminatable from an organism, a hydroxyapatite and optionally an alkaline inorganic compound, (B) applying molecularly orientated means selected from the group consisting of a uniaxial extension, an extruding extension, a milling and compression molding, to the melt of (A) at an extendible and moldable temperature, (C) extending and orienting the chain molecules of the polymer parallel to the major axis or plural axes.</p> |
