Percutaneous methods for apparatus for creating native tissue venous valves
US8460323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2010 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Jun 3, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1081
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Percutaneous methods and apparatuses for forming a venous valve from autologous tissue. A catheter having a retractable dissecting system received therein is delivered to a target location where a new venous valve is to be created. A distal balloon or other radially-expandable component mounted on the catheter is expanded against the vein wall, and the dissecting system is proximally retracted to deploy one or more dissecting components that dissect a subintimal layer of the vein wall. Radial expansion of the dissecting component(s) within the vein wall creates one or more leaflets and corresponding pocket/sinuses in the vein that collectively act as a venous valve, and/or the radially-expandable component of the catheter is subsequently collapsed such that the dissecting component(s) each pull a flap of the dissected tissue towards the vein lumen to create one or more leaflet(s) and corresponding pocket/sinuses in the vein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.