Atherectomy device having helical blade and blade guide
US5226909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1992 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Nov 4, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320052
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An atherectomy catheter includes a catheter body having a cylindrical housing at its distal end. The cylindrical housing includes an elongate cutting aperture on one side thereof and a mechanism for severing atheroma which enters within the opening. In a first embodiment, the cutting mechanism comprises a circular cutting blade which is advanced over an elongate guide member which defines a path for the blade. Use of the guide means helps assure that the cutting blade will not be lost from the housing during use. In a second embodiment, a rotatable helical cutting blade is mounted within the housing. In that particular embodiment, the helical cutting blade can serve as the guide member for the circular cutting blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.