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:
Dec. 18, 2012
Filed:
Mar. 25, 2011
Kevin W. Smith, Coral Gables, FL (US);
Thomas O. Bales, Jr., Coral Gables, FL (US);
Matthew A. Palmer, Miami, FL (US);
Derek Dee Deville, Coral Gables, FL (US);
Kevin W. Smith, Coral Gables, FL (US);
Thomas O. Bales, Jr., Coral Gables, FL (US);
Matthew A. Palmer, Miami, FL (US);
Derek Dee Deville, Coral Gables, FL (US);
Covidien AG, , CH;
Abstract
An ultrasonic surgical assembly includes an ultrasonic transducer operable to convert a received motional voltage into a movement of a cutting blade of an ultrasonic waveguide, a motional feedback circuit connected in a parallel configuration with the transducer, a variable power source operable to apply a first voltage between a set of connection points to the parallel configuration, a voltage meter operable to determine a feedback voltage measured from the motional feedback circuit, and a voltage controller operable to vary an output of the power source based upon the measured feedback voltage, resulting in a substantially constant feedback voltage and maintaining a substantially constant rate of movement of the cutting blade across a variety of cutting loads.