Multi-stage expandable stent-graft
US6336937B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1998 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Dec 9, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0039
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved device for use in a conduit, such as a blood vessel, is provided. The device uniquely combines desirable properties from two distinct previous devices. The device of the present invention assumes and is constrained to a first diametrical dimension for insertion into the conduit. Once inserted and properly positioned in the conduit the device expands to a second diametrical dimension within the conduit when the constraint is removed. The device can then be dilated to one or more enlarged third diametrical dimensions by using a balloon catheter or similar device. The result is a device that provides desirable properties of both self-expanding stents and balloon-expandable endoprostheses. The device can be employed in a variety of applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.