×

Bipolar electrosurgical trocar

  • US 5,417,687 A
  • Filed: 04/30/1993
  • Issued: 05/23/1995
  • Est. Priority Date: 04/30/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for electrosurgically penetrating tissue, comprising the steps of:

  • A. providing an electrosurgical tissue-penetrating probe having a stylet with an electrically conductive tissue penetrating edge at a distal end thereof adapted for delivering electrosurgical energy to adjacent tissue, the tissue-penetrating edge having spring means for increasing the diameter of the tissue-penetrating edge in contact with tissue when the tissue-penetrating edge is in the extended position and protrudes from the housing member, and the tissue-penetrating probe further having a return electrode disposed on a housing for the styler electrically isolated from the tissue penetrating edge of the stylet, the return electrode adapted to receive the electrical current delivered to the tissue by the edge; and

    B. delivering electrical energy to tissue adjacent the tissue penetrating edge of the stylet while forcing the stylet through the tissue.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×