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:
May. 20, 2003
Filed:
Apr. 03, 2000
Applicant:
Inventors:
Assignee:
Cyrus Medical Limited, Cardiff, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 1/818 ;
U.S. Cl.
CPC ...
A61B 1/818 ;
Abstract
An electrosurgical instrument is provided for the treatment of tissue in the presence of an electrically-conductive fluid medium. The instrument comprises an instrument shaft ( ), and a tissue treatment electrode ( ) at the distal end of the shaft for electrosurgically excising tissue pieces at an operation site. The tissue treatment electrode ( ) is cyclically movable relative to the distal end of the shaft ( ). Threshold control means are provided for controlling the power threshold for vaporisation of the electrically-conductive fluid medium at the tissue treatment electrode ( ).