Systeme zur Messung der Gewebeimpedanz durch ein elektrochirurgisches Kabel

Details

Veröffentlichungs-Nr.

EP2832310

Aktenzeichen

EP14178904

Anmeldetag

29. Juli 2014

Veröffentlichung

13. April 2016

Erteilung

13. April 2016

Rechtsraum

EP

IPC

A61B18/12H02M7/5387// H02M7/48

Abstract

The electrosurgical systems and methods of the present disclosure include a tissue resistance measurement system that compensates for capacitive parasitics in a cable connecting an electrosurgical generator to and electrosurgical cable to estimate the real resistance of a tissue load. The electrosurgical generator includes an output stage coupled to an electrical energy source and generates electrosurgical energy. The electrosurgical generator includes a plurality of sensors sensing a voltage and current of the electrosurgical energy and a controller controlling the output stage. The controller includes a calculator that calculates a real part of an impedance based on the sensed voltage and current, an estimator that estimates a resistance of the tissue using a solution to a quadratic equation that is a function of the real part of the impedance, and a control signal generator configured to generate a control signal for the output stage based on the resistance of the tissue.

Anmelder

Firma

Covidien LP

Land

🇺🇸 USA

Fachgebiete