Electrosurgical accessing of tissue with controlled...

Details Electrosurgical accessing of tissue with controlled... Electrosurgical accessing of tissue with controlled...

A - Human Necessities

61

B

A61B 18/18 (2006.01)

Patent

CA 2529552

Method, system and apparatus for carrying out electrosurgical procedures interstitially. Elevated temperature fluid such as steam generated by an instrument born electrosurgical cutting arc is evacuated through an intake port located adjacent the cutting electrode. Instrument cannula surface heating caused by transport of the heated fluid is isolated. Such thermal isolation is provided by a thermal shield which may be configured as an enveloping sheath.

L'invention concerne une méthode, un système et un appareil permettant de réaliser des opérations électrochirurgicales de manière interstitielle. Un fluide à température élevée, tel qu'une vapeur générée par un arc de coupe électrochirurgical supporté sur un instrument, est évacué par l'intermédiaire d'un orifice d'entrée situé au voisinage de l'électrode de coupe. La surface de canule de l'instrument, qui chauffe sous l'effet du transfert du fluide, est isolée thermiquement. Cette isolation thermique est assurée au moyen d'un blindage thermique pouvant se présenter sous la forme d'une gaine enveloppante.

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