Material removal device and method of use
US9717520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2014 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | May 24, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320775
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An atherectomy catheter having an inner drive shaft which rotates a distal rotary tissue borer with a helical cutting surface which enables the catheter to cut through and cross a CTO. Additionally, the atherectomy catheter has a distal cutting element rotated by an outer drive shaft configured to cut material from the wall of a vessel at a treatment site as the catheter is pushed distally through the treatment site. The atherectomy catheter includes a collection chamber positioned proximally of the cutting element and rotary tissue borer. The atherectomy catheter directs material cut from the treatment site into the collection chamber, breaks down larger portions of material that may block or clog the collection chamber and transports the material collected from the treatment site to a proximal opening in the atherectomy catheter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.