Patent ID: 7837683
Filing Date: 2010-11-23
Classification: A61B

Abstract:
1. An electrosurgical ablator comprising: a shaft having a proximal portion forming a handle and a tissue-contacting distal portion having an electrically conductive tip; and at least one active electrode located at or near said electrically conductive tip, the at least one active electrode comprising a plurality of electrically conductive protuberances spaced from each other and defining a plurality of recesses therebetween, said recesses characterized as having a bottom surface and a top surface, wherein said conductive tip further comprising a centrally located aspiration means comprising an aspirating port and an elevated wall extending above the bottom surface of said recesses and surrounding the entire perimeter of said aspirating port to thereby separate the aspirating port from adjacent recesses and reduce flow of fluid from the recesses directly into the aspirating port.