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:
Jul. 14, 2020
Filed:
Mar. 03, 2017
Ethicon Llc, Guaynabo, PR (US);
Scott A. Nield, Morrow, OH (US);
Ethicon LLC, Guaynabo, PR (US);
Abstract
An ultrasonic surgical instrument is disclosed including an ultrasonic transducer, an ultrasonic end effector comprising a proximal end formed of a first material having a first coefficient of thermal expansion, and a waveguide configured to transmit ultrasonic energy generated by the ultrasonic transducer to the ultrasonic end effector. The waveguide includes an attachment portion formed of a second material having a second coefficient of thermal expansion that is greater than the first coefficient of thermal expansion. The attachment portion is configured to be selectively expandable into an acoustically coupled retaining engagement with the ultrasonic end effector by expanding faster than the proximal end of the ultrasonic end effector when heat is applied to establish an interference fit therebetween.