Hollow helical stent system
US7942917B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2009 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Jan 16, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A stent is formed from a hollow resilient tube shaped into a helical expanded configuration to form a substantially cylindrical prosthesis that is releasably attached to an actuation shaft for delivery to a treatment site. The stent is deliverable in a substantially linear configuration and deployed with internal fluid pressure, which is delivered through the actuation shaft, to return to the helical expanded configuration. Specifically, injection of a deployment fluid into the resilient tube that forms the stent causes the stent to revert or spring back from the substantially linear delivery configuration to the original helical configuration, and in some applications to dilate a vessel. A ring is attached to a distal end of the stent to couple the stent system to a guidewire for delivery through the vasculature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.