Sustained release material and method of manufacturing the same
AssigneeOlympus Optical Co., Ltd.
InventorsYasuharu Hakamatsuka, Hiroyuki Irie
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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.
Claims5
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, comprising:
- a porous core into which said liquid drug is impregnated;
- a dense first interlayer formed around said core;
- a porous portion formed around said first interlayer;
- a dense surface layer formed to cover said first interlayer and said porous portion;
- a first communication path for allowing sad porous core to communicate with said porous portion;
- and
- a second communication path for allowing said porous portion to communicate with the exterior.
Dependencies are inferred from the claim text.