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:
Sep. 25, 1984
Filed:
Dec. 08, 1982
Frederick W Rexroth, Dunedin, FL (US);
Medical Research Associates, Ltd., Clearwater, FL (US);
Abstract
An electrosurgical generator, having particular utility in arthroscopic surgical procedures, is provided with a rapid start capability in its pure cut mode by inhibiting secondary modulation for an initial starting interval during which an uninterrupted high frequency cutting signal is applied to the output terminals. Upon expiration of the starting interval, the secondary modulation takes effect to modulate the cutting signal with a low frequency repetitive signal having a predetermined duty cycle. In addition, the generator output isolation transformer is arranged to provide an output impedance of at least 1,000 Ohms to match the impedance of human joints on which arthroscopic surgery is performed.