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Ultrasonically powered surgical instruments with rotating cutting implement

  • US 8,531,064 B2
  • Filed: 02/11/2010
  • Issued: 09/10/2013
  • Est. Priority Date: 02/11/2010
  • Status: Active Grant
First Claim
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1. An ultrasonic surgical instrument, comprising:

  • a housing;

    an ultrasonic transducer assembly rotatably supported within said housing and coupled to a cutting member;

    a motor rotor directly coupled to said ultrasonic transducer assembly for rotation therewith;

    a motor stator non-movably supported within said housing adjacent said motor rotor such that upon application of a motor drive signal to said motor rotor, said motor rotor and said ultrasonic transducer assembly are caused to rotate within said housing; and

    a slip ring assembly arranged to transmit said motor drive signal from a control system to said motor rotor, said slip ring assembly further arranged to transmit ultrasonic electrical signals from an ultrasound signal generator to said ultrasonic transducer assembly.

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