Drug delivery from hydrogels
US11369591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2016 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | May 12, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P27/06
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Drug delivery involving hydrogels as used for various medical conditions, and includes hydrogels formed in an eye with extended drug release times. An embodiment of the invention is a method of delivering a therapeutic agent to a tissue comprising forming a hydrogel in situ in an eye with a therapeutic agent dispersed in the hydrogel, the agent having a low solubility in water. The agent may be essentially insoluble in water. The hydrogel may be made so that 50% to 100% w/w of the agent is released when the hydrogel is from 100% to 50% persistent, with the persistence being a measure of the dry weight of the hydrogel relative to an initial dry weight of the hydrogel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.