Clamp coagulator/cutting system for ultrasonic surgical...

A - Human Necessities – 61 – B

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A61B 17/22 (2006.01) A61B 17/138 (2006.01) A61B 17/32 (2006.01) A61B 17/00 (2006.01) A61B 17/28 (2006.01) A61B 18/14 (2006.01)

Patent

CA 2153155

An ultrasonic surgical apparatus includes an ultrasonic surgical instrument (10) having a handpiece (14) with a transducer for converting an electrical signal into longitudinal virbratory motion of a blade (20) connected to the handpiece and an accessory (12) releasably connected to the handpiece to enable clamping of tissue against the vibrating blade to afford improved coagulating and cutting of tissue. Scissors-like grips (26) actuate a pivoted clamp jaw (24) along one side of the ultrasonically vibrating blade (20) to compress and bias tissue against the blade in a direction normal to the direction of longitudinal vibratory movement. The clamp jaw and blade are rotatable relative to one another to align a selected blade edge of a multi-edged blade with the clamp jaw for cutting and coagulating while clamping or to circumferentially space a selected blade edge from the clamp jaw for cutting and coagulating without clamping.

Un appareil chirurgical ultrasonique comprend un instrument chirurgical ultrasonique (10) ayant une pièce à main (14) avec un transducteur pour convertir un signal électrique en un mouvement longitudinal vibratoire d'une lame (20) connectée à la pièce à main et un accessoire (12) relié de manière libérable à la pièce à main pour permettre le pincement des tissus contre la lame vibratoire afin d'améliorer la coagulation et la coupe des tissus. Des pinces (26) semblables à des ciseaux actionnent une mâchoire pivotante de serrage (24) le long d'un côté de la lame (20) vibrante au moyen d'ultrasons pour comprimer et solliciter les tissus contre la lame dans une direction normale à la direction du mouvement vibratoire longitudinal. La mâchoire de serrage et la lame sont rotatives l'une par rapport à l'autre afin d'aligner un bord sélectionné de la lame d'une lame à bords multiples avec la mâchoire de serrage pour couper et coaguler tout en serrant, ou pour espacer circonférentiellement un bord sélectionné de la lame par rapport à la mâchoire de serrage afin de couper et coaguler sans serrer.

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