Catheter deliverable artificial multi-leaflet heart valve prosthesis and intravascular delivery system for a catheter deliverable heart valve prosthesis
US9011525B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2009 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Jun 10, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/0023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A heart valve prosthesis includes a collapsible stent and a one-piece multi-leaflet valve. The stent includes at least one length of wire having a series of turns forming a spring-like stent. The one-piece multi-leaflet valve is attached to the stent and includes a cylinder of polyester material secured thereto at three points. The stent is collapsible in a radial direction between a contracted state and an expanded state. The contracted state has a radial dimension smaller than a radial dimension of the expanded state. The stent is spring biased toward the expanded state such that it occupies an active state when implanted into a heart. The active state has a radial dimension that is between the radial dimension of the contracted state and the radial dimension of the expanded state such that a radial load generated by the bias of the collapsible stent is sufficient to retain the heart valve prosthesis in the heart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.