Atherectomy devices and methods
US11253290B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2020 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Oct 4, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320766
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Rotational atherectomy devices and systems can remove or reduce stenotic lesions in implanted grafts by rotating one or more abrasive elements within the graft. The abrasive elements can be attached to a distal portion of an elongate flexible drive shaft that extends from a handle assembly that includes a driver for rotating the drive shaft. In particular implementations, individual abrasive elements are attached to the drive shaft at differing radial angles in comparison to each other (e.g., configured in a helical array). The centers of mass of the abrasive elements can define a path that fully or partially spirals around the drive shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.