Product for controlling dissolving rate of orthopedic implant material and process of producing the same
AssigneeNan-Hui Yeh
InventorChin-Chi Yeh
Life of this patent
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Abstract
A product controlling dissolving rate of biomedical orthopedic implant material and a process of manufacturing the same are disclosed. At constant temperature and humidity and under vacuum, treatment solution is forced to diffuse to the material to form a second phase as a means of controlling the dissolving rate. Different treatment solution can form the phases having different structures from that of matrix. The inventive product has a structure of laminate concentric circle. The second phase and the structure of laminate concentric circle are used as ways for medicine release.
Claims17
A process of manufacturing a product which can control dissolving rate of a biomedical orthopedic implant material, the process including:
- Pre-treating of calcium sulfate salt powders to form granules;
- Putting the granules into one container;
- Wetting the container with vapor and then vacuuming the container to diffuse the vapor into the granules at a predetermined depth;
- Crystallizing the granules to form an inner layer and an outer layer, the inner layer is a calcium sulfate hemihydrate crystal layer and the outer layer covering the inner layer is a calcium sulfate dihydrate crystal layer;
- and
- Tableting the granules to form tablets.
A process of manufacturing a product which can control dissolving rate of a biomedical orthopedic implant material, the process including:
- Pre-treating of calcium phosphate salt powders to form granules;
- Putting the granules into one container;
- Wetting the container with vapor and then vacuuming the container to diffuse the vapor into the granules at a predetermined depth;
- Crystal growing the granules to form an inner layer and an outer layer, the inner layer is calcium phosphate crystal layer, wherein the outer layer coving the inner layer is hydroxyapatite crystal layer;
- and
- Tableting the granules to form tablets.
Dependencies are inferred from the claim text.