Transducer/Waveguide Engagement Mechanisms for Ultrasonic Surgical Instruments
First Claim
1. An ultrasonic surgical instrument, comprising:
- a transducer assembly configured to supply ultrasonic energy, the transducer assembly including a distal engagement member;
a waveguide defining a longitudinal axis and having a proximal engagement member configured to threadingly engage the distal engagement member of the transducer assembly, the waveguide configured to transmit the ultrasonic energy therealong from the proximal engagement member to a distal end thereof for treating tissue; and
a torque member coupled to the transducer assembly and disposed about the longitudinal axis, the torque member selectively rotatable about the longitudinal axis and relative to the waveguide to threadingly engage the transducer assembly and the waveguide, the torque member including a plurality of fingers pivotably coupled thereto and movable between a closed position, wherein the fingers are disposed in close proximity to one another and relative to the longitudinal axis, and a open position, wherein each finger extends radially-outwardly from the longitudinal axis in substantially perpendicular orientation relative to the longitudinal axis to define a moment arm configured to facilitate threading engagement of the transducer assembly and the waveguide.
2 Assignments
0 Petitions
Accused Products
Abstract
An ultrasonic surgical instrument includes a transducer assembly having a distal engagement member and configured to supply ultrasonic energy. A waveguide defines a longitudinal axis and has a proximal engagement member configured to threadingly engage the distal engagement member. The waveguide is configured to transmit the ultrasonic energy therealong to a distal end thereof for treating tissue. A torque member is coupled to the transducer assembly and is disposed about the longitudinal axis. The torque member is selectively rotatable about the longitudinal axis and relative to the waveguide to threadingly engage the transducer assembly and the waveguide to one another. The torque member includes a plurality of fingers pivotably coupled thereto and movable between a closed position and an open position. In the open position, each finger extends substantially perpendicularly from the longitudinal axis to define a moment arm that facilitates the engagement of the transducer assembly and the waveguide.
16 Citations
20 Claims
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1. An ultrasonic surgical instrument, comprising:
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a transducer assembly configured to supply ultrasonic energy, the transducer assembly including a distal engagement member; a waveguide defining a longitudinal axis and having a proximal engagement member configured to threadingly engage the distal engagement member of the transducer assembly, the waveguide configured to transmit the ultrasonic energy therealong from the proximal engagement member to a distal end thereof for treating tissue; and a torque member coupled to the transducer assembly and disposed about the longitudinal axis, the torque member selectively rotatable about the longitudinal axis and relative to the waveguide to threadingly engage the transducer assembly and the waveguide, the torque member including a plurality of fingers pivotably coupled thereto and movable between a closed position, wherein the fingers are disposed in close proximity to one another and relative to the longitudinal axis, and a open position, wherein each finger extends radially-outwardly from the longitudinal axis in substantially perpendicular orientation relative to the longitudinal axis to define a moment arm configured to facilitate threading engagement of the transducer assembly and the waveguide. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An ultrasonic surgical instrument, comprising:
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a transducer assembly configured to supply ultrasonic energy, the transducer assembly including a distal engagement member; a waveguide defining a longitudinal axis and having a proximal engagement member configured to engage the distal engagement member of the transducer assembly, the waveguide configured to transmit the ultrasonic energy therealong from the proximal engagement member to a distal end thereof for treating tissue; and a latch mechanism configured to releasably engage the transducer assembly and the waveguide to one another, the latch mechanism including; a crank arm having a first end and a second end, the crank arm pivotably coupled to one of the transducer assembly and the waveguide at the first end thereof via a first pivot; a linkage pivotably coupled to the second end of the crank arm at a first end of the linkage via a second pivot; and a sleeve member pivotably coupled to the linkage at a second end of the linkage via a third pivot, the sleeve member at least partially positionable about the other of the transducer assembly and the waveguide; wherein, the crank arm is selectively pivotable about the first pivot between an unlocked position, wherein the distal engagement member of the transducer assembly and the proximal engagement member of the waveguide are spaced-apart relative to one another, and a locked position, wherein the first and second pivots are aligned with one another and the longitudinal axis and wherein the third pivot is disposed in an over-center position relative to the first and second pivots and the longitudinal axis such that the sleeve member maintains the distal engagement member of the transducer assembly and the proximal engagement member of the waveguide in engagement with one another. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An ultrasonic surgical instrument, comprising:
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a transducer assembly configured to supply ultrasonic energy, the transducer assembly including a distal stop member disposed at a distal end thereof; a waveguide including a proximal hub, the waveguide defining a longitudinal recess configured to receive at least a portion of the transducer assembly therein and a transverse lumen extending therethrough in substantially parallel orientation relative to the longitudinal recess, the waveguide configured to transmit the ultrasonic energy therealong to a distal end thereof for treating tissue; and a latch mechanism configured to releasably engage the transducer assembly and the waveguide to one another, the latch mechanism including; an angled chuck movably disposed within the transverse lumen, the angled chuck having a first end defining a first width and a second end defining a second width smaller than the first width, the angled chuck including a pair of spaced-apart legs at the second end thereof defining a slot therebetween, the legs angled relative to one another such that the legs define a first gap distance therebetween at a closed end thereof and a second gap distance therebetween at an open end thereof that is greater than the first gap distance, the angled chuck selectively movable between an unlocked position, permitting insertion of the at least a portion of the transducer assembly into the longitudinal recess and through the slot, and a locked position, wherein withdrawal of the distal stop member through the slot is inhibited and wherein the angled chuck is wedged between the distal stop member of the transducer assembly and the proximal hub of the waveguide to engage the transducer assembly and waveguide to one another. - View Dependent Claims (16, 17, 18)
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19. An ultrasonic surgical instrument, comprising:
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a transducer assembly configured to supply ultrasonic energy, the transducer assembly including a distal engagement member and a pair of opposed knobs extending outwardly therefrom adjacent a distal end thereof; a waveguide having a proximal engagement member configured to engage the distal engagement member of the transducer assembly, the waveguide configured to transmit the ultrasonic energy therealong from the proximal engagement member to a distal end thereof for treating tissue; and a latch mechanism configured to releasably engage the transducer assembly and the waveguide to one another, the latch mechanism including; a lever including a handle portion, an intermediate portion, and an engaging portion, the lever pivotably coupled to the waveguide about the intermediate portion thereof, the handle portion extending from one end of the intermediate portion, the engaging portion extending from the other end of the intermediate portion, the engaging portion defining a bifurcated configuration and including a pair of hook members, the handle portion selectively movable between an unlocked position and a locked position to move the hook members into engagement with the knobs to engage the distal engagement member of the transducer assembly and the proximal engagement member of the waveguide with one another. - View Dependent Claims (20)
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Specification