System and method for improved start-up of self-oscillating electro-mechanical surgical devices
US8258886B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2010 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Sep 21, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320095
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An oscillating circuit for determining a resonant frequency of an electro-mechanical oscillating device and for driving the electro-mechanical oscillating device at the determined resonant frequency includes a driving circuit and a start-up, impetus injection circuit. The driving circuit is configured to receive one or more reference signals and further configured to provide a driving signal related to the reference signals to the electro-mechanical oscillating device. The start-up, impetus injection circuit is operably coupled to the electro-mechanical oscillating device and configured to selectively provide a start-up excitation signal to the electro-mechanical oscillation device. The start-up, impetus injection circuit is activated upon start-up of the oscillating circuit to drive the electro-mechanical oscillation device and the driving circuit determines a resonant frequency by measuring a parameter related to the resonant frequency of the electro-mechanical oscillating device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.