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:
Oct. 10, 2017
Filed:
May. 07, 2012
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, Neuhausen am Rheinfall, CH;
Abstract
A method of maintaining a constant movement of a cutting blade of an ultrasonic waveguide includes providing an ultrasonic transducer operable to convert a received motional current into a movement of a cutting blade of an ultrasonic waveguide, a measurement circuit connected in a parallel configuration with the ultrasonic transducer, and a variable power source operable to supply current through a set of connection points to the parallel configuration and thereby create the motional current in the ultrasonic transducer. Current is supplied through a set of connection points of the parallel configuration with the variable power source to, thereby, create the motional current in the ultrasonic transducer and the motional current is regulated with a current controller by varying an output of the power source, thereby maintaining a substantially constant rate of movement of the cutting blade across a variety of cutting loads.