Cutting and coring atherectomy device and method
US8192451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2009 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Jul 20, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/22038
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides a rotational and/or axially translatable atherectomy system, device and method having a flexible, elongated drive shaft or catheter having an expandable and collapsible conical coil with a cutting edge on the coil's large diameter proximal end. When retracted, the coil's sections are collapsed around each other, held together in the retracted position by a sheath that, when distally retracted, allows the coil to automatically expand. The coil is expanded at a point distal to the occlusion, then pulled proximally to cut the occluding material near the lumen wall. The proximal pulling force may be combined with low-speed rotation and/or translation and/or axial vibration at low to ultrasonic frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.