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发明授权
CN100420424C 具有增益台阶的超声手术刀和器械 失效 - 权利终止

具有增益台阶的超声手术刀和器械
摘要：
一种具有增益台阶的超声手术刀和器械。在超声手术刀主体的任何半波长中，刀主体具有第一振动波腹、振动波节、第二振动波腹和增益台阶。所述增益台阶位于第二振动波腹和第一振动波腹之间。所述增益台阶与所述振动波节间隔一增益台阶距离，该增益台阶距离大于在第二振动波腹和第一振动波腹之间的距离的5%。所述器械包括所述刀、具有超声换能器的手持件和超声传输杆，该超声传输杆的近端可操作地连接到所述超声换能器，超声传输杆的远端致动所述刀。在一个选择中，第一振动波腹是远侧末端，增益台阶位于振动波节和远侧末端之间，从而导致刀有效长度的增加。
摘要（英）：

An ultrasonic surgical blade, and an instrument, having a gain step. The blade body has, in any half wave length of the ultrasonic-surgical-blade body, a first vibration antinode, a vibration node, a second vibration antinode, and a gain step. The gain step is located between the second vibration antinode and the first vibration antinode. The gain step is spaced apart from the vibration node by a gain-step distance greater than 5% of the distance between the second vibration antinode and the first vibration antinode. The instrument includes the blade, a handpiece having an ultrasonic transducer, and an ultrasonic transmission rod whose proximal end is operatively connected to the ultrasonic transducer and whose distal end activates the blade. In one option, the first vibration antinode is the distal tip, and the gain step is located between the vibration node and the distal tip, resulting in an increased active length of the blade.

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