Polymeric coatings for controlled delivery of active agents
US6335029B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1998 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Dec 3, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/608
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Implantable medical device having a structure adapted for introduction into a patient wherein the structure is composed of a base material positioned over the structure. The implantable medical device further includes at least one composite layer of a bioactive agent and a polymer material and at least a barrier layer positioned over the composite layer and being of thickness adequate to provide a controlled release of the bioactive agent. The barrier layer being applied by a low energy plasma polymerization process which includes placing the device with the at least one composite layer in a plasma chamber and introducing at least one monomer gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.