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:
May. 13, 2025
Filed:
Apr. 26, 2024
Cilag Gmbh International, Zug, CH;
Cameron R. Nott, Fairfield, OH (US);
Foster B. Stulen, Johns Island, SC (US);
Fergus P. Quigley, Mason, OH (US);
John E. Brady, Cincinnati, OH (US);
Gregory A. Trees, Loveland, OH (US);
Amrita Singh Sawhney, Pittsburgh, PA (US);
Rafael J. Ruiz Ortiz, Mason, OH (US);
Patrick J. Scoggins, Loveland, OH (US);
Kristen G. Denzinger, Cincinnati, OH (US);
Craig N. Faller, Batavia, OH (US);
Madeleine C. Jayme, Cincinnati, OH (US);
Alexander R. Cuti, Pittsburgh, PA (US);
Matthew S. Schneider, Blue Ash, OH (US);
Chad P. Boudreaux, Cincinnati, OH (US);
Brian D. Black, Loveland, OH (US);
Maxwell T. Rockman, Cincinnati, OH (US);
Gregory D. Bishop, Hamilton, OH (US);
Frederick E. Shelton, Iv, Hillsboro, OH (US);
David C. Yates, Morrow, OH (US);
Cilag GmbH International, Zug, CH;
Abstract
Various aspects of a generator, ultrasonic device, and method for estimating a state of an end effector of an ultrasonic device are disclosed. The ultrasonic device includes an electromechanical ultrasonic system defined by a predetermined resonant frequency, including an ultrasonic transducer coupled to an ultrasonic blade. A control circuit measures a complex impedance of an ultrasonic transducer, wherein the complex impedance is defined as Z(t)=V(t)/I(t). The control circuit receives a complex impedance measurement data point and compares the complex impedance measurement data point to a data point in a reference complex impedance characteristic pattern. The control circuit then classifies the complex impedance measurement data point based on a result of the comparison analysis and assigns a state or condition of the end effector based on the result of the comparison analysis.