Wire-tubular hybrid stent
US5935162A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Mar 16, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/0054
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Radially-expandable stents are provided with improved longitudinal flexibility and stability, improved torsional flexibility and stability, improved trackability and conformability, and improved hoop strength. The stents combine the advantages typically associated with wire stents with those typically associated longitudinal stability. The stents include a plurality of cylindrical sections successively arranged along a longitudinal axis of the stent, a plurality of W-shaped elements in each of the cylindrical sections, each of the W-shaped elements having a center section and two outside legs, the plurality of W-shaped elements in each of the cylindrical sections opening in alternating directions along the longitudinal axis of the stent, wherein the W-shaped elements in adjacent cylindrical sections alternate between pairs of W-shaped elements that open towards each other along the longitudinal axis and pairs of W-shaped elements that open away from each other along the longitudinal axis when moving about the circumference of the adjacent cylindrical sections; and a plurality of tie members connecting adjacent cylindrical sections along the longitudinal axis of the stent, the tie m…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.