Ultrasonic dissection and coagulation system

Details Ultrasonic dissection and coagulation system Ultrasonic dissection and coagulation system

A - Human Necessities

61

B

A61B 17/32 (2006.01) A61B 17/28 (2006.01)

Patent

CA 2244515

An ultrasonic dissection and coagulation system for surgical use is provided. The system includes an ultrasonic instrument, a control module, and a pedal actuator. The ultrasonic actuator has a housing and an elongated body portion extending from the housing. An ultrasonic transducer supported within the housing is operatively connected to a cutting blade by a vibration coupler. The vibration coupler conducts high frequency vibration from the ultrasonic transducer to the cutting blade. The cutting blade has a cutting surface which is angled with respect to the longitudinal axis of the elongated body portion and, thus, with respect to the axis of vibration. A clamp member having a tissue contact surface is positioned adjacent to the blade member and is movable from an open position in which the tissue contact surface is spaced form the cutting surface to a clamped position in which the tissue contact surface is in close juxtaposed alignment with the cutting surface to clamp tissue therebetween. The clamp member and the angled blade combine to enhance contact between tissue and the cutting surface of the blade member.

Système de dissection et de coagulation à ultrasons utilisé en chirurgie. Le système comprend un instrument à ultrasons, un module de commande et un actionneur à pédale. L'actionneur d'ultrasons est formé d'un boîtier et d'un corps allongé qui sort du boîtier. Un transducteur ultrasonique supporté dans le boîtier est raccordé à une lame tranchante par un coupleur de vibrations. Le coupleur de vibrations transmet la vibration de haute fréquence du transducteur ultrasonique à la lame. La lame a une surface de coupe qui est à un angle par rapport à l'axe longitudinal du corps allongé et, partant, par rapport à l'axe de vibration. Une pince ayant une surface de contact avec le tissu est placée à côté de la lame et peut être déplacée de la position ouverte (la surface de contact avec le tissu étant distancée de la surface de coupe) à une position fermée (la surface de contact avec le tissu étant étroitement juxtaposée à la surface de coupe de façon à pincer le tissu). La pince se combine à la lame pour améliorer le contact entre le tissu et la surface de coupe de la lame.

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