Ultrasonic surgical blade and instrument having a gain step
First Claim
1. An ultrasonic surgical blade comprising an ultrasonic-surgical-blade body having a distal tip which is a most-distal vibration antinode, having a most-distal vibration node, having a second-most-distal vibration antinode, and having a gain step, wherein the gain step is disposed between the second-most-distal vibration antinode and the distal tip, and wherein the gain step is spaced apart from the most-distal vibration node by a gain-step distance greater than 5% of the distance between the second-most-distal vibration antinode and the distal tip.
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Accused Products
Abstract
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.
477 Citations
12 Claims
- 1. An ultrasonic surgical blade comprising an ultrasonic-surgical-blade body having a distal tip which is a most-distal vibration antinode, having a most-distal vibration node, having a second-most-distal vibration antinode, and having a gain step, wherein the gain step is disposed between the second-most-distal vibration antinode and the distal tip, and wherein the gain step is spaced apart from the most-distal vibration node by a gain-step distance greater than 5% of the distance between the second-most-distal vibration antinode and the distal tip.
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11. An ultrasonic surgical instrument comprising:
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a) a handpiece including an ultrasonic transducer; b) an ultrasonic transmission rod having a proximal end and a distal end, wherein the proximal end is operatively connected to the ultrasonic transducer; and c) an ultrasonic surgical blade activated by the distal end and including an ultrasonic-surgical-blade body having a distal tip which is a most-distal vibration antinode, having a most-distal vibration node, having a second-most-distal vibration antinode, and having a gain step, wherein the gain step is disposed between the second-most-distal vibration antinode and the distal tip, and wherein the gain step is spaced apart from the most-distal vibration node by a gain-step distance greater than 5% of the distance between the second-most-distal vibration antinode and the distal tip.
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12. An ultrasonic surgical blade comprising an ultrasonic-surgical-blade body having, 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, wherein the gain step is disposed between the second vibration antinode and the first vibration antinode, and wherein 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 anti node and the first vibration antinode.
Specification