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Electrosurgical Instrument Which Reduces Collateral Damage to Adjacent Tissue

  • US 20090062794A1
  • Filed: 09/16/2008
  • Published: 03/05/2009
  • Est. Priority Date: 11/12/1997
  • Status: Active Grant
First Claim
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1. An electrode assembly for use with an electrosurgical instrument having opposing end effectors and a handle for effecting movement of the end effectors relative to one another, comprising:

  • a housing having at least one portion that removably engages at least one portion of the electrosurgical instrument; and

    a pair of opposing electrodes each including an electrically conductive sealing surface and a corresponding insulating substrate, the electrodes being removably engageable with respective end effectors of the electrosurgical instrument such that the electrodes reside in opposing relation relative to one another,wherein at least one of the electrically conductive sealing surfaces of one of the opposing electrodes is raised relative to a corresponding insulating substrate to thereby reduce current concentrations between the opposing electrodes during activation to thereby reduce thermal spread to adjacent tissue structures.

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