Ultrasonic handpiece
US7651490B2 · kind B2 · utility
23Cited by
92References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2004 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Jul 17, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/00763
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A handpiece having a single set of piezoelectric elements polarized to produce longitudinal motion when excited at the relevant resonant frequency. The piezoelectric crystals are connected to an ultrasonic horn to which a cutting tip is attached. The horn and/or the cutting tip contains a plurality of diagonal slits or grooves. The slits or grooves produce optimized torsional movement in the cutting tip when the piezoelectric crystals are excited at a second resonant frequency. Preferably, the two drive frequencies are not coincident, but provided in non-overlapping pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.