Endoluminal stent having a matched stiffness region and/or a stiffness gradient
US7722664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2007 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Feb 21, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0036
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A modular elongated stent having an overlap region where two modular components fit together, the overlap region being relatively stiff as compared to another more flexible region of the stent when the stent is in an assembled configuration, the stent further comprising a mimic region that has a stiffness essentially equivalent to the stiffness of the overlap region, to provide kink resistance. A stent having such a mimic region or otherwise stiff region and a flexible region may have a transition region between the stiff and flexible regions, also to provide kink resistance. A stent may have relatively stiff regions and relatively flexible regions positioned to align the flexible regions with curved regions of a body lumen when deployed within the body lumen. The stiffness of the stiff, flexible, and transition regions may be controlled by varying the cross-sectional area of the stent components and/or by varying the stent architecture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.