Hybrid stent with helical connectors
US8114149B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2009 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Oct 20, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/0013
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is a hybrid stent design using half-slot circumferential sets of strut members with short (<1.5 mm) slot length that has minimal fish scaling and excellent stent retention and flexibility. These half-slot circumferential sets of strut members are connected one to the other with helical connectors similar to those of the Palmaz stent. One important difference in the design of the stent of the present invention is that the helical connectors are attached to every other crown (rather than connected to every crown) to further improve stent flexibility. By appropriately varying the strut width of both the connected and unconnected curved crowns to be greater at the center than at their ends, an increased radial strength can be provided for a given maximum strain that is imparted to the stent when it is expanded to its maximum diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.