Triggered release hydrogel drug delivery system
US7066904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2002 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Oct 25, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/0266
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention features a method for triggering release of a drug from a hydrogel polymer to tissue at a desired location of the body using a catheter. A portion of the catheter is coated on its outer surface with a polymer having the capacity to incorporate a predetermined substantial amount of drug which is immobilized in the polymer until released by a triggering agent or condition that is different from physiological conditions. Upon contact with a triggering agent or condition, the polymer reacts, e.g., swells or contracts, such that the drug is delivered to the desired body tissue. A balloon catheter is shown in which the hydrogel is carried on the exterior surface of the balloon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.