Ablation system with catheter clearing abrasive
US6632230B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2001 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Apr 12, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320775
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ablation system comprising an atherectomy device and an aspiration catheter, each routed to a position just proximal to a lesion within a patient's vessel to ablate the lesion. The atherectomy device includes a flexible driveshaft coupled to an ablation burr. The ablation burr includes a concave front surface and a generally frusto-conical rear surface, both having an abrasive disposed thereon. The aspiration catheter has an elongate body and includes a centrally located lumen. The distal portion of the lumen is frusto-conical in shape and is positioned at the distal end of the catheter to define an aspiration mouth. The taper of the frusto-conical portion of the lumen corresponds to the taper of the rear surface of the ablation burr so that the ablation burr may be pulled back into the distal portion of the lumen of the catheter during operation of the system to clear captured ablated material therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.