Drug delivery endovascular stent and method of use
US10456508B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Jan 13, 2017 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Oct 1, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2420/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improvement in drug-eluting stents, and method of their making, are disclosed. The surface of a metal stent is roughened to have a surface roughness of at least about 20 μin (0.5 μm) and a surface roughness range of between about 300-700 μin (7.5-17.5 μm). The roughened stent surface is covered with a polymer-free coating of a limus drug, to a coating thickness greater than the range of surface roughness of the roughened stent surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.