The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2007
Filed:
May. 09, 2002
Richard P. Fleenor, Englewood, CO (US);
David B. Kieda, Salt Lake City, UT (US);
James D. Isaacson, Salt Lake City, UT (US);
Paul R. Borgmeier, Salt Lake City, UT (US);
Richard P. Fleenor, Englewood, CO (US);
David B. Kieda, Salt Lake City, UT (US);
James D. Isaacson, Salt Lake City, UT (US);
Paul R. Borgmeier, Salt Lake City, UT (US);
Megadyne Medical Products, Inc., Draper, UT (US);
Abstract
A removable semi-insulating sheet for use in self-limiting electrosurgical return semi-insulating sheet for use with electrosurgery. Through the selection of impedance characteristics for the electrode materials of the principal body of the semi-insulating sheet, and through tailoring of semi-insulating sheet geometries, the return electrode of the present invention is self-regulating and self-limiting as to current density and temperature rise so as to prevent patient trauma. The semi-insulating sheet has an effective bulk impedance equal to or greater than about 4,000 Ω·cm. The effective bulk impedance of the sheet may arise from resistive components, capacitive components, inductive components, or combinations thereof. The configuration of the presently described return electrode allows the electrode to self-limit the electrode's current densities, thereby preventing burning of a patient during surgery.