Sonic burr
US6554846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2001 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Nov 17, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ablative burr (100) that may be used for a medical procedure, such as an atherectomy, that does not require the user of an elongate flexible drive shaft. The burr comprises a main body (110) that is elastically connected to an abrasive shell member (130). One or more oscillatory driver(s) (150), such as a piezoelectric transducer, is disposed between the shell member and the main body to oscillate the shell with respect to the main body. Elastically compressible members (140, 142) are provided between the shell member and the main body member. The oscillatory drivers are preferably set or tuned to operate at a resonant frequency of the shell member whereby shell member amplitudes larger than the oscillatory driver amplitudes may be induced. Embodiments of longitudinally oscillatory burrs (100, 200) and rotationally oscillatory burrs (300, 400) are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.