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:
Mar. 01, 2022
Filed:
Sep. 27, 2018
Ethicon Llc, Guaynabo, PR (US);
Cameron R. Nott, Loveland, OH (US);
Fergus P. Quigley, Mason, OH (US);
Amrita S. Sawhney, Cincinnati, OH (US);
Stephen M. Leuck, Milford, OH (US);
Brian D. Black, Loveland, OH (US);
Eric M. Roberson, Lebanon, OH (US);
Kristen G. Denzinger, Cincinnati, OH (US);
Patrick J. Scoggins, Loveland, OH (US);
Craig N. Faller, Batavia, OH (US);
Madeleine C. Jayme, Cincinnati, OH (US);
Jacob S. Gee, Cincinnati, OH (US);
Cilag GmbH International, Zug, CH;
Abstract
A generator, ultrasonic device, and method for controlling a temperature of an ultrasonic blade are disclosed. A control circuit coupled to a memory determines an actual resonant frequency of an ultrasonic electromechanical system comprising an ultrasonic transducer coupled to an ultrasonic blade by an ultrasonic waveguide. The actual resonant frequency is correlated to an actual temperature of the ultrasonic blade. The control circuit retrieves from the memory a reference resonant frequency of the ultrasonic electromechanical system. The reference resonant frequency is correlated to a reference temperature of the ultrasonic blade. The control circuit then infers the temperature of the ultrasonic blade based on the difference between the actual resonant frequency and the reference resonant frequency. The control circuit controls the temperature of the ultrasonic blade based on the inferred temperature