Composite self expanding stent device having a restraining element
US6179878A · kind A · utility
Inventors
Key dates
| Filing date | Oct 14, 1998 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Oct 14, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/902
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A composite stent device comprises a shape memory alloy stent sleeve which is treated so that it can exert an outward force on a lumen in which the stent device is to be deployed, and a restraint element which restricts the maximum transverse dimension to which the stent sleeve can expand outwardly. The restraint sleeve can minimize damage to a lumen by a stent located within it. It can be arranged to allow the stent device to be deformed in a bending mode, for example when the lumen in which the device is located is subjected to a transverse flattening deformation, relying on the enhanced elastic properties of the shape memory alloy stent sleeve to recover to the open, generally rounded configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.