Ultrasonic end effectors with increased active length
First Claim
1. An end effector for an ultrasonic surgical instrument, the end effector comprising:
- a first portion having a first specific acoustic impedance, the first portion disposed along a longitudinal axis and comprising a proximal end and a distal end; and
a second portion having a second specific acoustic impedance different than the first specific acoustic impedance, the second portion disposed between the proximal end and the distal end of the first portion along the longitudinal axis.
3 Assignments
0 Petitions
Accused Products
Abstract
An end effector includes a first portion having a first specific acoustic impedance value, and a second portion having a second specific acoustic impedance value less than the first specific acoustic impedance value. The first portion may include a proximal end segment and a distal end segment. The proximal end segment and the distal end segment are composed of a first material. The second portion may include an insert segment composed of a second material. The insert segment is located between the proximal end segment and the distal end segment along the longitudinal axis of the end effector. The insert segment functions to bridge or fill a nodal energy gap defined by the end effector.
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Citations
24 Claims
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1. An end effector for an ultrasonic surgical instrument, the end effector comprising:
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a first portion having a first specific acoustic impedance, the first portion disposed along a longitudinal axis and comprising a proximal end and a distal end; and a second portion having a second specific acoustic impedance different than the first specific acoustic impedance, the second portion disposed between the proximal end and the distal end of the first portion along the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An ultrasonic blade for an ultrasonic surgical instrument, the ultrasonic blade comprising:
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a first portion having a first specific acoustic impedance, the first portion disposed along a longitudinal axis and comprising a proximal end and a distal end; a second portion having a second specific acoustic impedance different than the first specific acoustic impedance, the second portion disposed between the proximal end and the distal end of the first portion along the longitudinal axis; a body defining the longitudinal axis, the body comprising a proximal body end and a distal body end, wherein the distal body end is movable along the longitudinal axis by ultrasonic vibrations produced by an ultrasonic transducer; a treatment region extending from the proximal body end to the distal body end; a top surface; and a bottom surface.
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14. An ultrasonic surgical instrument, comprising:
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an end effector having a length and configured to transmit ultrasonic vibrations along the length; wherein the end effector comprises; a first portion having a first specific acoustic impedance, the first portion disposed along a longitudinal axis and comprising a proximal end and a distal end, the first portion further comprising a distal end segment and a proximal end segment; and a second portion having a second specific acoustic impedance different than the first specific acoustic impedance, the second portion disposed between the proximal end and the distal end of the first portion along the longitudinal axis, the second portion further comprising a distal insert segment, an intermediate insert segment, and a proximal insert segment. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification