Flexible helical stent having different helical regions
US8961590B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2011 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Jan 3, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0068
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to tubular stents that are implanted within a body lumen. The stent has a cylindrical shape defining a longitudinal axis and includes a proximal helical section, a distal helical section and an intermediate ring section there between. Each of the proximal and distal helical sections has of a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form a band, the band being wrapped about the longitudinal axis in a substantially helical manner to form a plurality of helical windings, wherein the distal helical section is wound about the longitudinal axis in the opposite direction from the proximal helical section. The intermediate ring section includes a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form an endless ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.