Balanced ultrasonic end effector
First Claim
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1. A balanced ultrasonic surgical instrument comprising:
- an ultrasonic transmission rod having a proximal end and a distal end; and
a balance region including first and second balance asymmetries wherein the balance region extends from a node point at the distal end of the ultrasonic transmission rod to a proximal end of an ultrasonic surgical end effector;
and wherein the first and second balance asymmetries are positioned to counter torque created in the proximal end of the end effector such that transverse vibrations in the ultrasonic transmission rod are substantially equal to zero.
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Abstract
A balanced ultrasonic surgical instrument according to the present invention includes an ultrasonic transmission rod which is connected to a blade or end effector by a balance portion, which includes first and second balance asymmetries designed to compensate for the imbalances induced by the blade.
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Citations
6 Claims
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1. A balanced ultrasonic surgical instrument comprising:
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an ultrasonic transmission rod having a proximal end and a distal end; and a balance region including first and second balance asymmetries wherein the balance region extends from a node point at the distal end of the ultrasonic transmission rod to a proximal end of an ultrasonic surgical end effector; and wherein the first and second balance asymmetries are positioned to counter torque created in the proximal end of the end effector such that transverse vibrations in the ultrasonic transmission rod are substantially equal to zero. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification