Hydrophobic active agent particle coatings and methods for treatment
US11123459B2 · kind B2 · utility
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39References
22Claims
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Key dates
| Filing date | Dec 14, 2017 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Mar 20, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Drug delivery coatings and devices including the same are described herein. The drug delivery coating has a first coated layer with non-ionic polymer and photogroups, a second coated layer with acid polymer in contact and hydrogen bonded with the first layer, particles with hydrophobic therapeutic agent, and cationic agent. The coating can be provided on a balloon catheter, and the particles and cationic agent can be transferred to tissue during a medical procedure, such as an angioplasty procedure, for a therapeutic effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.