Articulating ultrasonic surgical instrument

Surgery – Instruments – Cutting – puncturing or piercing

Patent

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Details

606 1, A61B 1732

Patent

active

060901209

ABSTRACT:
A therapeutic ultrasound instrument is described for cutting, dissecting, or cauterizing tissue. Ultrasonic vibrations, when transmitted to organic tissue at suitable energy levels and using a suitable end-effector, may be used for the safe and effective treatment of many medical conditions. An ultrasonic surgical instrument is described which incorporates an articulating end-effector. The instrument comprises an ultrasonic signal generator, an ultrasonically actuated end-effector, and a substantially solid ultrasonic waveguide which connects the ultrasonic signal generator to the end-effector. The waveguide comprises a transmission section extending from the signal generator to a fixed node, and an articulation section extending from the fixed node to an pivoting node. The end-effector includes a waveguide segment. A handle is adapted to hold the signal generator. An outer sheath extends from the handle to the end-effector and surrounds the waveguide. An actuation trigger is rotatably positioned on the handle, and an actuation arm extends from a distal end of the actuation trigger to the pivoting node. The actuation arm is connected to the pivoting node by a lever arm which extends from the pivoting node. Such instruments are particularly suited for use in minimally invasive procedures, such as endoscopic or laparoscopic procedures.

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