Ultrasonic surgical blade having transverse and longitudinal vibration
First Claim
1. An ultrasonic surgical blade comprising an ultrasonic-surgical-blade body having a longitudinal axis, a distal tip, a proximal end adapted for longitudinal ultrasonic vibrational excitation, a most-distal longitudinal vibration node, a treatment portion extending from the distal tip toward the most-distal longitudinal vibration node, and a functional asymmetry which is asymmetric about the longitudinal axis and which translates longitudinal ultrasonic vibrational movement of the proximal end into a combination of a longitudinal ultrasonic vibration and a transverse ultrasonic vibration in at least some of the treatment portion of the ultrasonic-surgical-blade body, wherein an amplitude of the transverse ultrasonic vibration at the distal tip is less than substantially ten percent of a maximum amplitude of the transverse ultrasonic vibration of the treatment portion of the ultrasonic-surgical-blade body.
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Accused Products
Abstract
An ultrasonic surgical blade includes an ultrasonic-surgical-blade body having a longitudinal axis, a distal tip, a proximal end adapted for longitudinal ultrasonic vibrational excitation, a most-distal longitudinal vibration node, a treatment portion extending from the distal tip toward the most-distal longitudinal vibration node, and a functional asymmetry. The functional asymmetry is asymmetric about the longitudinal axis and translates longitudinal ultrasonic vibrational movement of the proximal end into a combination of a longitudinal ultrasonic vibration and a transverse ultrasonic vibration in at least some of the treatment portion of the ultrasonic-surgical-blade body. An amplitude of the transverse ultrasonic vibration at the distal tip is less than substantially ten percent of a maximum amplitude of the transverse ultrasonic vibration of the treatment portion of the ultrasonic-surgical-blade body. An alternate embodiment of the ultrasonic surgical blade includes at least one functional asymmetry and at least one balance asymmetry.
311 Citations
22 Claims
- 1. An ultrasonic surgical blade comprising an ultrasonic-surgical-blade body having a longitudinal axis, a distal tip, a proximal end adapted for longitudinal ultrasonic vibrational excitation, a most-distal longitudinal vibration node, a treatment portion extending from the distal tip toward the most-distal longitudinal vibration node, and a functional asymmetry which is asymmetric about the longitudinal axis and which translates longitudinal ultrasonic vibrational movement of the proximal end into a combination of a longitudinal ultrasonic vibration and a transverse ultrasonic vibration in at least some of the treatment portion of the ultrasonic-surgical-blade body, wherein an amplitude of the transverse ultrasonic vibration at the distal tip is less than substantially ten percent of a maximum amplitude of the transverse ultrasonic vibration of the treatment portion of the ultrasonic-surgical-blade body.
- 11. An ultrasonic surgical blade comprising an ultrasonic-surgical-blade body having a distal tip, a proximal end adapted for longitudinal ultrasonic vibrational excitation, a most-distal longitudinal vibration node, a second-most-distal longitudinal vibration node, a treatment portion extending from the distal tip toward the second most-distal vibration node, at least one functional asymmetry, and at least one balance asymmetry, wherein the at-least-one functional asymmetry and the at-least-one balance asymmetry create a balance point, wherein longitudinal ultrasonic vibrational movement of the proximal end creates ultrasonic vibration of the ultrasonic-surgical-blade body which is substantially purely longitudinal ultrasonic vibration proximal the balance point and which is a combination of longitudinal and transverse ultrasonic vibration distal the balance point and in at least some of the treatment portion, and wherein an amplitude of the transverse ultrasonic vibration at the distal tip is less than substantially ten percent of a maximum amplitude of the transverse ultrasonic vibration of the treatment portion of the ultrasonic-surgical-blade body.
- 20. An ultrasonic surgical blade comprising an ultrasonic-surgical-blade body having a distal tip, a proximal end adapted for longitudinal ultrasonic vibrational excitation, a most-distal longitudinal vibration node, a second-most-distal longitudinal vibration node, a treatment portion extending from the distal tip toward the most-distal vibration node, at least one functional asymmetry, and at least one balance asymmetry, wherein the at-least-one functional asymmetry and the at-least-one balance asymmetry create a balance point which is disposed between the most-distal longitudinal vibration node and the second-most-distal longitudinal vibration node, and wherein longitudinal ultrasonic vibrational movement of the proximal end creates ultrasonic vibration of the ultrasonic-surgical-blade body which is substantially purely longitudinal ultrasonic vibration proximal the balance point and which is a combination of longitudinal and transverse ultrasonic vibration distal the balance point and in at least some of the treatment portion of the ultrasonic-surgical-blade body.
Specification