Apparatus and method for polishing lumenal prostheses
US5788558A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1995 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Nov 13, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B31/116
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Methods and apparatus for deburring and rounding edges and polishing surfaces of radially expansible lumenal prostheses, such as stents and grafts, are provided. A stent (2) is mounted onto a polishing apparatus (58) and a flowable abrasive slurry is extruded through the apparatus in abrading contact with inner and outer surfaces (28, 29) and circumferential openings (30) in the stent. To polish the cut surfaces (32) and edges (34, 36) surrounding the openings, the abrasive slurry is introduced into an inner lumen (26) of the stent and extruded radially outward through the openings. The inner and outer wall surfaces 28, 29 are preferably pre-polished prior to cutting the slot pattern (i.e., openings 30) in the stent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.