Methods for controlling temperature in ultrasonic device
US11259830B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2018 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Aug 18, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2218/008
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A generator, ultrasonic device, and method for controlling a temperature of an ultrasonic blade are disclosed. A control circuit coupled to a memory determines an actual resonant frequency of an ultrasonic electromechanical system comprising an ultrasonic transducer coupled to an ultrasonic blade by an ultrasonic waveguide. The actual resonant frequency is correlated to an actual temperature of the ultrasonic blade. The control circuit retrieves from the memory a reference resonant frequency of the ultrasonic electromechanical system. The reference resonant frequency is correlated to a reference temperature of the ultrasonic blade. The control circuit then infers the temperature of the ultrasonic blade based on the difference between the actual resonant frequency and the reference resonant frequency. The control circuit controls the temperature of the ultrasonic blade based on the inferred temperature
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.