Expandable stent
US6746477B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2001 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Oct 31, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/91558
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An expandable stent has a porous tubular wall with a longitudinal axis. The porous tubular wall has a plurality of butterfly cells disposed in a direction orthogonal to the longitudinal axis of the tubular wall, each butterfly cell having two symmetrical wing portions, an abdomen portion, and an antenna portion. The abdomen portion and the antenna portion have different shapes. Preferably, each cell includes a plurality of curved portions and no straight portions. Also, the cells of one row of cells are preferably interlocked with the cells of an adjacent row of cells, each cell having at least six three-point connections. Preferably, each cell has substantially the same shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.