Device and process for coating stents
US6723373B1 · kind B1 · utility
79Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2000 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Jun 29, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D3/0466
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A stent is positioned on an undersized mandrel and the stent is coated with an excess of a polymer and drug solution. The stent is rotated to spin off the excess of the coating. The stent is then moved into a new, clean position on the mandrel. The process is repeated a few times, after which time the coating is already dry and non-sticky. This process forms a conforming coating. Various important polymer solution parameters include viscosity, solvent evaporation rate and several others. The actual type of coating polymer is not as important as how the surface of the stent is treated, according to the steps described herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.