System and method for measuring current of an electrosurgical generator

Patent metadata

Field	Value
Publication number	US-9028481-B2
Application number	US-98506311-A
Country	US
Kind code	B2
Filing date	Jan 5, 2011
Priority date	Jan 5, 2011
Publication date	May 12, 2015
Grant date	May 12, 2015

Abstract

An electrosurgical generator includes an RF output stage, a DC blocking capacitor, a measuring circuit, and a sensor circuit. The RF output stage generates electrosurgical energy for application to an active electrode. The DC blocking capacitor is electrically coupled between the RF output stage and the active electrode. The measuring circuit is coupled to the DC blocking capacitor and measures the voltage across the DC blocking capacitor. The sensor circuit determines the current of the electrosurgical energy as a function of the voltage across the DC blocking capacitor.

First claim

What is claimed is:

1. An electrosurgical system comprising:
an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue; and
an electrosurgical generator adapted to supply the electrosurgical energy to the at least one active electrode, the electrosurgical generator comprising:
an RF output stage adapted to generate the electrosurgical energy;
a DC blocking capacitor electrically coupled between the RF output stage…

Assignees

• Behnke Ii Robert J
• Covidien Lp

Inventors

• Behnke Ii Robert J

Classifications

• A61B18/1233 Primary

  Human Necessities · mapped topic

• A61B18/1477

  Human Necessities · mapped topic

• A61B2018/00875

  Human Necessities · mapped topic

• A61B2018/00791

  Human Necessities · mapped topic

• A61B2018/00648

  Human Necessities · mapped topic