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:
Aug. 17, 1999
Filed:
Oct. 15, 1997
Applicant:
Inventors:
Mikhail Boukhny, Laguna Beach, CA (US);
Ahmad Salehi, Irvine, CA (US);
Assignee:
Alcon Laboratories, Inc., , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ; H03L / ; H01L / ;
U.S. Cl.
CPC ...
606169 ; 310316 ; 331 16 ;
Abstract
A system and method for tuning and controlling ultrasonic handpieces by varying the frequency of the drive signal that is fed to the handpiece by a discrete dither increment. A digital signal processor may be used to measure the response of the handpiece to the varying drive signal and compare these responses to determine the probable value of the actual series resonance. The output of the digital signal processor is used to generate control parameters embodied within an appropriate control signal, which is fed to the source of the drive signal in order to alter aspects of the drive signal.