Ultrasonic dental scaler selectively tunable either manually or automatically
US5730594A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Dec 5, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ultrasonic dental scaler for use with a dental scaler insert having a resonant frequency associated therewith includes a handpiece adapted for removably receiving the dental scaler insert, an energizing coil mounted on the handpiece, whereby the energizing coil substantially surrounds the dental scaler insert. The ultrasonic dental scaler includes a selectively tunable oscillator circuit coupled to the energizing coil and which generates a control signal having an oscillation frequency associated therewith for vibrating the dental scaler insert in response thereto. Specifically, the selectively tunable oscillator circuit includes an automatic tuner for automatically altering the oscillation frequency associated with the control signal to be substantially equivalent to the resonant frequency associated with the dental scaler insert in response to the control signal being fed back thereto. Further, the selectively tunable oscillator circuit includes a manual tuner for altering the oscillation frequency associated with the control signal in response to manual adjustment of the manual tuner. The selectively tunable oscillator circuit also includes a switch which is operatively coupl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.