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Vessel sealing instrument with reduced thermal spread and method of manufacture therefor

  • US 9,867,659 B2
  • Filed: 10/18/2016
  • Issued: 01/16/2018
  • Est. Priority Date: 02/24/2012
  • Status: Active Grant
First Claim
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1. An end effector assembly for an electrosurgical instrument, comprising:

  • a first jaw member and a second jaw member, at least one of the first jaw member or the second jaw member movable relative to the other to grasp tissue therebetween, at least one of the first jaw member or the second jaw member including;

    an electrode having a tissue contacting surface and a side wall extending from the tissue contacting surface, the side wall including a series of ribs and a series of spaces therebetween; and

    an insulator, wherein a portion of the insulator is disposed within each space of the series of spaces,wherein the series of ribs and the portions of the insulator are configured to define a current flow path from the side wall towards the tissue contacting surface such that electrosurgical energy is inhibited from propagating to untargeted tissue.

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