发明名称 |
Systems for measuring tissue impedance through an electrosurgical cable |
摘要 |
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. |
申请公布号 |
EP2832310(B1) |
申请公布日期 |
2016.04.13 |
申请号 |
EP20140178904 |
申请日期 |
2014.07.29 |
申请人 |
COVIDIEN LP |
发明人 |
LARSON, ERIC J.;FORD, CAROLYN;WASKIEWICZ, ALEXANDER M. |
分类号 |
A61B18/12;H02M7/48;H02M7/5387 |
主分类号 |
A61B18/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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