摘要:
A process for dissolving modified cellulose includes contacting modified cellulose solution with at least one neutralizing agent to form a plurality of modified cellulose particles.
摘要:
A process for dissolving modified cellulose includes contacting modified cellulose with a solvent in a mixture to form swelled modified cellulose and then contacting the mixture with a salt to dissolve the swelled modified cellulose. The dissolved modified cellulose is used to form at least one of a predictably degrading coating, film, or a fiber.
摘要:
A process for dissolving modified cellulose includes contacting modified cellulose solution with at least one non-solvent to form a plurality of modified cellulose particles.
摘要:
A process for dissolving modified cellulose includes contacting modified cellulose solution with at least one multivalent cation to form a plurality of modified cellulose particles.
摘要:
The present disclosure provides treatments of medical devices which inhibit thrombus formation. At least a portion of a substrate of a medical device includes a surface possessing a functionality and / or surface charge adapted to modulate the pH of the surface of the medical device, as well as the pH microenvironment near the surface of a medical device.
摘要:
Methods and compositions relate to modulating the release profile of drug molecules from a hydrogel by controlling the kinetics of the pH transition of the hydrogel. The hydrogel is formed by in situ polymerization and includes a drug molecule having a pKa between the pH of the formed hydrogel and the physiologic environment in which the hydrogel is placed.
摘要:
A process for forming microspheres is disclosed. The process includes: forming a first plurality microspheres comprising at least one bioactive agent and modified cellulose; contacting the first plurality of microspheres with a solution of a biodegradable polymer to form a discontinuous phase liquid; contacting the discontinuous phase liquid with a continuous phase liquid to form an emulsion; and extracting a second plurality of microspheres from the emulsion, the second plurality of microspheres comprising the first plurality of microspheres.
摘要:
The present disclosure relates to a drug delivery device including a biodegradable housing and a hydrogel within the biodegradable housing. The housing, the hydrogel, or both, may include a bioactive agent. Also disclosed is a method of drug delivery including the steps of forming the biodegradable housing, in embodiments a hydrogel, suspending a bioactive agent in the hydrogel, and introducing a second hydrogel and/or precursors of a second hydrogel into the biodegradable housing.
摘要:
The present disclosure provides implants suitable for drug delivery. In embodiments, the present disclosure provides layered biodegradable drug delivery implants and systems and methods for making these implants.