Electrical and thermal connections for ultrasonic transducer

US10736649B2 · kind B2 · utility

Assignee

• Ethicon, Inc. · US

Inventors

• Jeffrey D. Messerly · Cincinnati, US
• Craig T. Davis · Cincinnati, US
• Mark E. Tebbe · Lebanon, US
• Brian D. Black · Loveland, US
• Stephen M. Leuck · Milford, US
• Eric M. Roberson · Lebanon, US
• John E. Brady · Cincinnati, US
• Amrita S. Sawhney · Cincinnati, US
• Shan Wan · Plymouth, US
• Ion V. Nicolaescu · San Clemente, US
• James M. Wilson · Cincinnati, US
• Amelia A. Pierce · Cincinnati, US

Key dates

• Filing date: Aug 17, 2017
• Grant date: Aug 11, 2020
• Expiry date: Mar 5, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/42
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Disclosed is an ultrasonic surgical instrument comprising a transducer base plate, first and second piezoelectric elements positioned on opposite faces of the transducer base plate. The transducer base plate is coupled to a waveguide. The waveguide is electrically coupled to the first and second piezoelectric elements by a conductive adhesive. The first and second piezoelectric elements are electrically coupled to an ultrasonic signal generator through an electrode. A thermal conductor conducts thermal energy away from the first and second piezoelectric elements. Also disclosed is a method of fabricating such an ultrasonic surgical instrument.