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. 18, 2011
Filed:
Nov. 18, 2005
David L. Anderson, Frederick, CO (US);
Nate G. Elsen, Thornton, CO (US);
Michael W. Fellinger, Boulder, CO (US);
Pravin V. Mehta, Huntington Beach, CA (US);
David L. Anderson, Frederick, CO (US);
Nate G. Elsen, Thornton, CO (US);
Michael W. Fellinger, Boulder, CO (US);
Pravin V. Mehta, Huntington Beach, CA (US);
Abbott Medical Optics Inc., Santa Ana, CA (US);
Abstract
A phacoemulsification system includes a phacoemulsification handpiece including a cutting tip ultrasonically vibrated by an ultrasonic transducer. A power supply is provided for driving the ultrasonic transducer at a resonant frequency of the transducer and cutting tip and varying power to the transducer, in response to loading of the cutting tip, by phase shifting voltage and current supplied to the transducer.