SURGICAL INSTRUMENTS WITH ARTICULATING SHAFTS
First Claim
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1. A surgical instrument comprising:
- an ultrasonic blade, the ultrasonic blade comprising;
a proximally positioned straight section extending along a longitudinal axis; and
a distally positioned curved section coupled to the straight section and curved away from the longitudinal axis, wherein the curved section defines a radius of curvature, wherein the curved section subtends a first angle, and wherein a point of tangency between the curved section and the straight section is located at a predetermined position.
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Abstract
Various embodiments described herein are directed to ultrasonic blades. For example, an ultrasonic blade may comprise a proximally positioned straight section extending along a longitudinal axis and a distally positioned curved section coupled to the straight section and curved away from the longitudinal axis. The curved section may define a radius of curvature and subtend a first angle. A point of tangency between the curved section and the straight section may be positioned at either a node of the ultrasonic blade or an anti-node of the ultrasonic blade.
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Citations
20 Claims
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1. A surgical instrument comprising:
an ultrasonic blade, the ultrasonic blade comprising; a proximally positioned straight section extending along a longitudinal axis; and a distally positioned curved section coupled to the straight section and curved away from the longitudinal axis, wherein the curved section defines a radius of curvature, wherein the curved section subtends a first angle, and wherein a point of tangency between the curved section and the straight section is located at a predetermined position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An ultrasonic blade comprising:
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a proximally positioned straight section extending along a longitudinal axis; and a distally positioned curved section coupled to the straight section and curved away from the longitudinal axis, wherein the curved section defines a radius of curvature, wherein the curved section subtends a first angle, and wherein a point of tangency between the curved section and the straight section is located at a predetermined position. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An asymmetric ultrasonic blade comprising:
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a proximally positioned straight section extending along a longitudinal axis; a distally positioned curved section coupled to the straight section and curved away from the longitudinal axis; and a radius of curvature defined by the curved section, wherein the curved section subtends an angle; wherein an intersection of the curved section and the straight section defines a point of tangency at a predefined location corresponding to a node or an anti-node of the asymmetric ultrasonic blade, wherein the node or anti-node is positioned at the point of tangency to guide the vibration modes of the asymmetric ultrasonic blade substantially along the longitudinal axis. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification