Nanotechnology for drug delivery, contrast agents and biomedical implants
First Claim
Patent Images
1. A biomedical material for administration in a human or animal comprising:
- nanostructured ceramic powders whose surface has been reacted with a precursor;
a solid matrix;
wherein the nanostructured ceramic powders have been embedded in the solid matrix;
and wherein the nanostructured ceramic powders have a domain size smaller than a capillary blood vessel.
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Abstract
A nanocomposite structure comprising a nanostructured filler or carrier intimately mixed with a matrix, and methods of making such a structure. The nanostructured filler has a domain size sufficiently small to alter an electrical, magnetic, optical, electrochemical, chemical, thermal, biomedical, or tribological property of either filler or composite by at least 20%.
148 Citations
28 Claims
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1. A biomedical material for administration in a human or animal comprising:
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nanostructured ceramic powders whose surface has been reacted with a precursor;
a solid matrix;
wherein the nanostructured ceramic powders have been embedded in the solid matrix;
and wherein the nanostructured ceramic powders have a domain size smaller than a capillary blood vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A biomedical material for administration in a human or animal comprising;
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nanostructured ceramic powders whose surface has been reacted with a precursor;
a solid matrix;
wherein the nanostructured ceramic powders have been embedded in the solid matrix;
wherein the nanostructured ceramic powders have a domain size smaller than a capillary blood vessel; and
a drug, wherein the nanostructured ceramic powders function as a carrier for the drug.
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12. A biomedical material for administration in a human or animal comprising:
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nanostructured ceramic powders whose surface has been reacted with a precursor;
a solid matrix;
wherein the nanostructured ceramic powders have been embedded in the solid matrix;
wherein the nanostructured ceramic powders have a domain size smaller than a capillary blood vessel; and
a coating formed on the nanostructured ceramic powders wherein the nanostructured powders are water-soluble and the coated material is water-insoluble.
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13. A biomedical material for administration in a human or animal comprising:
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nanostructured ceramic powders whose surface has been reacted with a precursor;
a solid matrix;
wherein the nanostructured ceramic powders have been embedded in the solid matrix;
wherein the nanostructured ceramic powders have a domain size smaller than a capillary blood vessel; and
wherein the material delivers a time-release drug.
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14. A biomedical material for administration in a human or animal comprising:
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nanostructured ceramic powders whose surface has been reacted with a precursor;
a solid matrix;
wherein the nanostructured ceramic powders have been embedded in the solid matrix;
wherein the nanostructured powders have a domain size smaller than a capillary blood vessel; and
wherein the nanostructured ceramic powders are responsive to an externally applied magnetic field so as to preferentially gather and function in locations having an applied magnetic field. - View Dependent Claims (15)
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16. A biomedical material for administration in a human or animal comprising:
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nanostructured ceramic powders whose surface has been reacted with a precursor;
a solid matrix;
wherein the nanostructured ceramic powders have been embedded in the solid matrix;
wherein the nanostructured ceramic powders have a domain size smaller than a capillary blood vessel; and
wherein the powders comprise a marker. - View Dependent Claims (17, 18)
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19. A biomedical material for administration in a human or animal comprising:
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a filler of powders whose surfaces have been reacted with a precursor;
a solid matrix;
wherein the filler of powders is embedded in the solid matrix;
wherein the filler powders are nanostructured;
the loading of the filler is less than 95 volume percent; and
wherein the filler composition comprises a ceramic and the composition is administered in a human or animal.
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20. A material for biological application comprising:
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nanostructured inorganic powders having a domain size smaller than 100 nm;
wherein the surface of the nanostructured inorganic powders has been reacted with a precursor to form a coating;
wherein the coating comprises a polymer and the coated nanostructured inorganic powders serve as a time-release delivery of a drug.
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21. A biomedical material for administration in a human or animal comprising:
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nanostructured metallic powders whose surfaces have been reacted with a precursor;
a solid matrix;
wherein the nanostructured metallic powders are embedded in the solid matrix;
a solid composite comprising a matrix and nanostructured metallic powders; and
wherein the nanostructured metallic powders have a domain size smaller than a capillary blood vessel. - View Dependent Claims (22, 23)
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24. A nanostructured material comprising:
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water-soluble nanostructured inorganic powders having a domain size smaller than 100 nm;
wherein the surfaces of the nanostructured inorganic powders have been reacted with a precursor;
wherein the nanostructured inorganic powders become water-insoluble after the nanostructured inorganic powders have been reacted with the precursor.
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25. A nanostructured material comprising:
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water-insoluble nanostructured inorganic powders having a domain size smaller than 100 nm;
wherein the surfaces of the nanostructured inorganic powders have been reacted with a precursor;
a coating on the powders, wherein the coating comprises a metallic species and the coated powders are a vehicle to deliver biologically active species;
wherein the nanostructured inorganic powders becomes water-soluble after the nanostructured inorganic powders have been reacted with the precursor. - View Dependent Claims (26, 27, 28)
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Specification