Therectomy device having a light weight drive shaft and an imaging device
US6497711B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2000 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Oct 12, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/378
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An atherectomy device having the ability to create variably sized lumens in a vessel. An ablation burr rotated by a drive shaft is routed through a control shaft having a bend in its distal end. The control shaft is in turn routed through a surrounding guide catheter. By extending or retracting the bend of the control shaft into the distal end of the guide catheter, the lateral displacement of the ablation burr is varied. A lumen in a vessel is created by rotating the control shaft within the surrounding guide catheter. In addition, the atherectomy device may include an integrated imaging sensor contained within a separate lumen of the catheter surrounding the drive shaft. The imaging sensor provides images of the interior of the vessel wall to determine if an occlusion has been removed by operation of the ablation burr. The catheter may include a self-expanding stent at its distal end to force the ablation burr against a vessel wall in order to create various sized lumens in a patient's vasculature. Finally, the drive shaft that rotates the ablation burr is made of a lightweight polymeric material such as a liquid crystal polymer having fibers that are braided to provide desired t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.