Implantable medical device having protruding surface structures for drug delivery and cover attachment
US6254632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2000 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Sep 28, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0068
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for forming an implantable medical device, such as a stent, covered stent, or synthetic stent graft, is provided. Protruding structures are formed on a surface of the device. The protruding structures have a central depression region surrounded by a lip. The protruding structures can have a variety of shapes, including circular and ovular shapes, or the protruding structure can form a groove. The protruding structures can be used to engage a cover. Glue can be added to the protruding structures to help secure the cover. The protruding structures can also contain a therapeutic substance or substances for release in situ. The protruding structures can be formed using a laser discharge to create a hole in the stent surface followed by directing a pressurized stream of grit at the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.