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Electrosurgical device with internal digestor electrode

  • US 9,011,428 B2
  • Filed: 03/01/2012
  • Issued: 04/21/2015
  • Est. Priority Date: 03/02/2011
  • Status: Active Grant
First Claim
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1. An electrosurgical wand for electrosurgically treating a target tissue comprising:

  • an elongate shaft having a proximal handle end and a distal end;

    a first active electrode surface disposed on the distal end of the shaft and a first digester electrode surface recessed away from the first active electrode surface and electrically connected with the first active electrode surface; and

    an aspiration aperture disposed adjacent the first active electrode surface and fluidly connected with an aspiration lumen, wherein the first digester electrode surface is disposed within the aspiration lumen; and

    a return electrode located proximal to the active electrode comprising a crescent shaped discharge aperture, the crescent shaped aperture comprising a central axis coaxial with a first largest opening portion of the aperture and wherein the central axis is further disposed approximately in line with the first active electrode surface; and

    wherein the crescent aperture further comprises two narrower opening portions that extend from the central axis, in a lateral and distal direction.

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