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Planar ablation probe for electrosurgical cutting and ablation

  • US 6,179,836 B1
  • Filed: 10/28/1998
  • Issued: 01/30/2001
  • Est. Priority Date: 01/07/1992
  • Status: Expired due to Fees
First Claim
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1. An electrosurgical probe for applying electrical energy to a target site within a confined spaced in a patient'"'"'s body, the instrument comprising:

  • a shaft having a proximal end portion and a distal end portion extending from the shaft, the distal end portion having an axial length, a thickness substantially less than said length and a width substantially larger than said thickness to form a substantially planar body having an active side and a non-active side opposing the active side sized to fit within a relatively narrow space within the patient'"'"'s body;

    an insulating member extending alone the non-active side of the substantially planar body;

    at least one active electrode extending along the active side of the substantially planar body of the distal end portion of the shaft and being insulated from the non-active side and having an exposed surface area;

    a return electrode having an exposed surface area larger than the exposed surface area of the active electrode and being spaced from the active electrode; and

    a connector disposed near the proximal end portion of the shaft for electrically coupling the active electrode to a high frequency voltage source.

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