System and method for controlling power based on impedance...

Details System and method for controlling power based on impedance... System and method for controlling power based on impedance...

A - Human Necessities

61

B

A61B 18/12 (2006.01) A61N 1/32 (2006.01)

Patent

CA 2694438

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.

L'invention concerne un système et un procédé de commande de l'application d'énergie à un tissu en utilisant des mesures d'impédance. L'impédance, corrélée à la température, peut être fixée à un niveau souhaité, tel qu'un pourcentage de l'impédance initiale. L'impédance fixée peut être une fonction de l'impédance initiale, de la taille et de l'espacement des électrodes, de la taille d'un passage ciblé et ainsi de suite. L'impédance fixée peut ensuite être entrée dans un algorithme PID ou dans un autre algorithme de boucle de commande afin d'extraire une puissance à appliquer à un dispositif de traitement.

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