System and method for controlling power based on impedance detection, such as controlling power to tissue treatment devices
US9108052B2 · kind B2 · utility
41Cited by
41References
29Claims
0Family size
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Key dates
| Filing date | Jul 24, 2008 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Dec 9, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36146
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method of controlling the application of energy to tissue using measurements of impedance are described. The impedance, correlated to the temperature, may be set at a desired level, such as a percentage of initial impedance. The set impedance may be a function of the initial impedance, the size and spacing of the electrodes, the size of a targeted passageway, and so on. The set impedance may then be entered into a PID algorithm or other control loop algorithm in order to extract a power to be applied to a treatment device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.