Two-phase technique to restore artery patency and a catheter temperature control system in atherectomy
US10945757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2017 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Mar 11, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2217/007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of two-phase atherectomy for removal of plaque within an artery forming a stenosis including a first phase of rotational drilling by exerting a rotational force on a cutter to form a channel within the plaque having a diameter substantially equal to a diameter of the cutter—the cutter being rotated at a first rotational speed sufficient to maintain rotation of the cutter about a stationary rotational axis—and a second phase of orbital impact by exerting a rotational force on the cutter to result in radial orbital motion of the cutter within the channel resulting in periodic impact of the cutter upon the plaque to form micro-fractures within the plaque and enlarge the diameter of the channel to a diameter substantially greater than the diameter of the cutter—the cutter being rotated at a second rotational speed to result in the radial orbital motion of the cutter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.