| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved ultrasonic surgical instrument which is easily usable, enables a user to quickly and simply perform dissection, and accelerates blood coagulation. SOLUTION: An ultrasonic actuator in the ultrasonic dissection and blood coagulation system 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 from 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. COPYRIGHT: (C)2009,JPO&INPIT
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