Ultrasonic assembly for use with ultrasonic surgical instruments
AssigneeEthicon, Inc.
InventorWilliam D. Dannaher
Life of this patent
Estimating the term…
Abstract
A surgical instrument includes an ultrasonic transducer assembly comprising a coupling portion laterally movable at an ultrasonic frequency. In addition, the surgical instrument includes an ultrasonic transmission waveguide extending from the coupling portion and an ultrasonic treatment element defining a cutting surface, wherein the ultrasonic treatment element extends from the ultrasonic transmission waveguide, and wherein the lateral movement of the coupling portion is in a direction perpendicular to a plane defined by the cutting surface of the ultrasonic treatment element.
Claims18
A surgical instrument, comprising:
- a longitudinal axis;
- and
- an ultrasonic transducer assembly, comprising:
- a coupling portion configured to vibrate laterally at an ultrasonic frequency in a direction perpendicular to the longitudinal axis;
- at least two piezoelectric elements positioned on opposite sides of the coupling portion, wherein the at least two piezoelectric elements are configured to vibrate laterally in a direction perpendicular to the longitudinal axis;
- and
- at least one securing member extending at least partially through the coupling portion and the at least two piezoelectric elements;
- an ultrasonic transmission waveguide extending longitudinally from the coupling portion;
- and
- an ultrasonic treatment element comprising a plurality of cutting edges defining a cutting surface, wherein the ultrasonic treatment element extends from the ultrasonic transmission waveguide, and wherein the lateral vibration of the at least two piezoelectric elements causes a torsional reciprocating motion of the ultrasonic treatment element.
A surgical instrument, comprising:
- an ultrasonic transducer assembly, comprising:
- a coupling portion;
- at least two piezoelectric elements positioned on opposite sides of the coupling portion;
- and
- at least one securing member extending at least partially through the coupling portion and the at least two piezoelectric elements;
- an ultrasonic transmission waveguide extending from the coupling portion, wherein the ultrasonic transmission waveguide defines a longitudinal axis;
- and
- an ultrasonic treatment element comprising a distal tip comprising a plurality of cutting edges, wherein the ultrasonic treatment element extends from the ultrasonic transmission waveguide, wherein the longitudinal axis extends through the distal tip, wherein the coupling portion and the at least two piezoelectric elements are configured to reciprocate laterally in a direction perpendicular to the longitudinal axis, and wherein the reciprocation of the piezoelectric elements causes a torsional reciprocating motion of the ultrasonic treatment element.
A surgical instrument, comprising:
- a longitudinal axis;
- and
- an ultrasonic transducer assembly, comprising:
- a coupling portion configured to vibrate laterally at an ultrasonic frequency;
- piezoelectric elements positioned on opposite sides of the coupling portion;
- and
- a securing member extending at least partially through the coupling portion and the piezoelectric elements;
- an asymmetric ultrasonic transmission waveguide extending from the coupling portion;
- and
- an ultrasonic treatment element comprising a plurality of cutting edges defining a cutting surface, wherein the coupling portion and the piezoelectric elements are configured to vibrate laterally in a direction perpendicular to the longitudinal axis, wherein the ultrasonic treatment element extends longitudinally from the asymmetric ultrasonic transmission waveguide, and wherein the lateral vibration of the coupling portion causes a torsional reciprocating motion of the ultrasonic treatment element.
Dependencies are inferred from the claim text.