Balanced ultrasonic curved blade
First Claim
1. An ultrasonic blade, comprising:
- a waveguide configured to transmit ultrasonic energy therethrough;
an end-effector provided at the distal end of the waveguide, the end-effector comprising a functional asymmetry; and
means for balancing the transverse excursion in the waveguide proximal to the end-effector, andmeans for introducing asymmetrical motion in the distal portion of the waveguide, andmeans for balancing torsion excursion in the waveguide proximal to the end-effector.
1 Assignment
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Accused Products
Abstract
Methods and devices that provide reduced transverse motion in a curved ultrasonic blade and/or ultrasonic surgical instrument with functional asymmetries. An ultrasonic blade in accordance with embodiments of the present invention includes a curved functional portion of an ultrasonic blade, wherein the center of mass of the curved functional portion lies on the mid-line of a waveguide delivering ultrasonic energy to the blade. Balancing in accordance with embodiments of the present invention, using placement of the center of mass of the curved portion of the blade appropriately, provides blade balance in a proximal portion of the blade, without reduction of mass and inherent stress increase proximal to the end-effector.
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Citations
8 Claims
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1. An ultrasonic blade, comprising:
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a waveguide configured to transmit ultrasonic energy therethrough; an end-effector provided at the distal end of the waveguide, the end-effector comprising a functional asymmetry; and means for balancing the transverse excursion in the waveguide proximal to the end-effector, and means for introducing asymmetrical motion in the distal portion of the waveguide, and means for balancing torsion excursion in the waveguide proximal to the end-effector. - View Dependent Claims (2, 3, 4, 5)
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6. An ultrasonic surgical device, comprising:
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an elongated waveguide configured to transmit ultrasonic energy therethrough, the elongated waveguide comprising a center-line extending through the center of mass of the elongated waveguide; an end-effector provided at the distal end of the waveguide, the end-effector comprising a curved portion having a positive curvature, the positive curvature of the curved portion producing an offset of the center of mass of the curved portion; and an anti-curved portion positioned between the elongated waveguide and the curved portion, the anti-curve having a negative curvature, the negative curvature configured to correct the offset of the center of mass of the curved portion, thereby substantially balancing the ultrasonic surgical device; and a first notch positioned proximal to the end-effector, the first notch axis at an acute angle to the center-line; and a second notch positioned proximal to the first notch. - View Dependent Claims (7, 8)
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Specification