Sustained release material and method of manufacturing the same
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United States of America Patent
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Oct 20, 1992
Grant Date -
N/A
app pub date -
Apr 5, 1991
filing date -
Apr 16, 1990
priority date (Note) -
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Abstract
A sustained release material to be buried at a position close to a diseased part in a living body to slowly release an impregnated liquid drug includes a core mainly consisting of a ceramic material and having a plurality of pores formed at a predetermined porosity, and a surface layer mainly consisting of a ceramic material, formed around the outer surface of the core, and having a plurality of pores having a pore size or porosity smaller than that of the pores formed in the core.
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