Anchorage for highly stressed endoprostheses
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United States of America Patent
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May 13, 1980
Grant Date -
N/A
app pub date -
May 12, 1977
filing date -
May 12, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An implantable prosthesis anchorage which contains a non-porous outer coating in the regions which is positioned in contact with bone. The non-porous outer coating consists of (i) at least one bioactive resorbable ceramic material which is a calcium phosphate and (ii) at least one polymer which is mechanically and chemically stable in the body. The ceramic material is in particulate form having particle diameters between 0.5 and 1 mm. The ceramic material particles is incorporated in the polymer in such a way that resorption of the ceramic material leads to a polymer structure with continuous pores filled with living bone tissue. Bioactivating bonding residues of the ceramic material are left on the inner surfaces of the filled pores which were created by the resorption of the ceramic material.
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