Methods and systems for bypassing an occlusion in a blood vessel
US8241311B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Jun 12, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/22095
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and systems for re-entering the true lumen of a vessel after subintimally bypassing an occlusion in a blood vessel. A guidewire is positionable within a subintimal tract in a wall of the blood vessel with a distal end located beyond the occlusion. A hollow lumen of the guidewire includes a retractable blade slidably exposable adjacent a distal end thereof for rotary cutting or scoring the intima layer of the vessel wall to create a transverse cut or line of weakness in the intima. A balloon catheter is subsequently trackable over the guidewire and once inflated tears or otherwise ruptures the transverse cut, thereby creating or enlarging a passageway into the true lumen of the blood vessel beyond the occlusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.