Patent ID: 11925712
Assignee: SORRENTO THERAPEUTICS, INC.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 2:
3. A fully implantable delivery device configured to deliver a bioactive agent to a subject, the device comprising:
the bioactive agent;
a wall having a surface;
a plurality of nanostructures extending from the surface of the wall, at least a portion of the nanostructures having a cross-sectional dimension of greater than about 5 nanometers and less than about 300 nanometers, and a height of greater than about 5 nanometers to less than about 1 micrometer, and wherein at least a portion of the nanostructures have a center-to-center spacing of greater than about 50 nanometers to less than about 1 micrometer, and
a plurality of microstructures extending from the surface of the wall, at least a portion of the microstructures having a cross-sectional dimension of greater than about 500 nanometers and less than about 10 micrometers and a height of from about 20 nanometers to about 1 micrometer, wherein the cross-sectional dimension of each nanostructure of the plurality of nanostructures is smaller than the cross-sectional dimension of each microstructure of the plurality of microstructures;
wherein the plurality of nanostructures and plurality of microstructures are arranged in a fractal dimension of greater than about 1.