Coupling for slip ring assembly and ultrasonic transducer in surgical instrument

US8734476B2 · kind B2 · utility

Assignee

• Ethicon Endo-Surgery, Inc. · US

Inventors

• Sora Rhee · Cincinnati, US
• Samantha L. Sheets · Sharonville, US
• Daniel J. Mumaw · Milford, US
• John A. Weed, III · Monroe, US
• Craig T. Davis · Cincinnati, US
• Scott A. Nield · Hamilton, US

Key dates

• Filing date: Oct 13, 2011
• Grant date: May 27, 2014
• Expiry date: Oct 13, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2017/320097
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An ultrasonic surgical instrument includes a body such as a handle assembly and an acoustic transmission assembly. The acoustic transmission assembly includes an ultrasonic transducer and an end effector. A mounting ring is positioned on a horn of the transducer. A rotatable drum is positioned distal to the mounting ring. Piezoelectric components of the transducer are positioned proximal to the mounting ring. Electrical conduits extend from the drum to the piezoelectric components and are routed over or through the mounting ring. The drum is coupled with a power source through a slip ring assembly to selectively activate the transducer.