Electrosurgical generator

A - Human Necessities – 61 – B

Patent

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Details

A61B 18/12 (2006.01)

Patent

CA 2686430

An electrosurgical generator includes one or more radio frequency (RF) sources (60) and an output stage including at least two output lines (6OC, 48, 49, 50) for connection to an electrosurgical instrument. The generator includes means for measuring a parameter associated with the electrosurgical procedure, such as the impedance measured across two of the output lines. A controller (72) controls the generator such that it delivers a first RF waveform (such as a cutting signal) or a second RF waveform (such as a coagulating signal) to the output lines, and, in a combined mode, both first and second waveforms. The controller (72) automatically adjusts at least one aspect of one or both waveforms in the combined mode, in response to the measured parameter associated with the surgical procedure.

L'invention concerne un générateur électrochirurgical qui comprend une ou plusieurs sources (60) radiofréquences (RF); un étage de sortie muni d'au moins deux lignes de sortie (60C, 48, 49, 50) servant à se connecter à un instrument électrochirurgical; des moyens pour mesurer un paramètre associé à la procédure électrochirugicale, tel que l'impédance mesurée aux bornes de deux des lignes de sortie. Un contrôleur (72) commande au générateur de sorte de délivrer une première forme d'onde RF (telle qu'un signal de coupe) ou une seconde forme d'onde RF (telle qu'un signal de coagulation) vers les lignes de sortie et, dans un mode combiné, à la fois les première et seconde formes d'onde. En réponse au paramètre mesuré associé à la procédure chirurgicale, le contrôleur (72) règle automatiquement au moins un aspect d'une ou des deux formes d'onde dans le mode combiné.

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