Ultrasonically powered surgical instruments with rotating cutting implement
First Claim
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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Accused Products
Abstract
In one general aspect, various embodiments are directed to an ultrasonic surgical instrument that comprises a handpiece housing that rotatably supports an ultrasonic transducer assembly therein that may be selectively rotated by various motor configurations. Various slip ring arrangements are disclosed for supplying ultrasonic electrical signals and motor drive signals from a control system. Various forms of blade and cutting implements are disclosed for attachment to the ultrasonic transducer assembly such that such implements may be selectively rotatable within a hollow outer sheath. Vacuum may be applied to the cutting implement or through the outer sheath to draw tissue through an opening in the sheath and into contact with the cutting implement.
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Citations
18 Claims
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1. An ultrasonic surgical instrument, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An ultrasonic surgical instrument, comprising:
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a housing; an ultrasonic transducer assembly rotatably supported within said housing and coupled to a blade; a motor mounted within said housing, said motor having a distal drive shaft portion coupled to said ultrasonic transducer assembly for applying rotational motion thereto, said motor further having a proximal drive shaft portion protruding therefrom; and a slip ring assembly comprising; an inner contact supported by said proximal drive shaft portion for rotational travel therewith, said inner contact in communication with said ultrasonic transducer assembly; and a fixed contact in sliding contact with said first inner contact and communicating with an ultrasound signal generator to transmit ultrasonic electrical signals to said inner contact. - View Dependent Claims (10, 11, 12)
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13. An ultrasonic surgical instrument assembly, comprising:
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an instrument housing; a self-contained ultrasonic instrument rotatably supported within said instrument housing said self-contained ultrasonic instrument having an ultrasonic transducer assembly therein for applying ultrasonic motion to a blade attached thereto; a motor supported within said instrument housing and communicating with said self contained ultrasonic instrument to selectively apply a rotational motion thereto; and a slip ring assembly supported within said instrument housing and communicating with an ultrasonic generator for supplying ultrasonic electrical signals to the ultrasonic transducer assembly in said self-contained ultrasonic instrument. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification