Surgical tool mechanism
First Claim
1. A surgical tool capable of transmitting torsional ultrasonic vibrations, said surgical tool comprising a longitudinally extending guide defining a longitudinal axis of said tool, a first jaw member at a distal end thereof having an operating surface with a profile comprising an angled cutting element and a coagulating element, a longitudinally extending carrier rotatable about said guide, a second jaw member mounted pivotably to a distal end of said carrier, said second jaw member having a surface which has complementary shape to that of the operating surface of the first jaw member, and outer shroud including operating means for actuating said second jaw member wherein rotation of said carrier acts on the operating means to cause pivoting of said second jaw member into and out of operative relationship with said first jaw member, wherein the second jaw member pivots about a first axis substantially simultaneously with rotation of the first axis about a second axis substantially orthogonal to the first axis.
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Accused Products
Abstract
The surgical tool comprises a longitudinally extending waveguide (1) defining a longitudinal axis (2). A first jaw member (1b) is connected at a distal end of the waveguide (1). A longitudinally extending carrier tube (3) is rotatable about the waveguide (1) and a second jaw member (6) is pivotably mounted to a distal end of the carrier tube (3). An outer shroud (7) includes a guide lobe (9) bearing on a rearward face of the second jaw member. Rotation of the carrier tube (3) causes pivoting of the second jaw member (6) into and out of operative relationship with the first jaw member (1b).
131 Citations
29 Claims
- 1. A surgical tool capable of transmitting torsional ultrasonic vibrations, said surgical tool comprising a longitudinally extending guide defining a longitudinal axis of said tool, a first jaw member at a distal end thereof having an operating surface with a profile comprising an angled cutting element and a coagulating element, a longitudinally extending carrier rotatable about said guide, a second jaw member mounted pivotably to a distal end of said carrier, said second jaw member having a surface which has complementary shape to that of the operating surface of the first jaw member, and outer shroud including operating means for actuating said second jaw member wherein rotation of said carrier acts on the operating means to cause pivoting of said second jaw member into and out of operative relationship with said first jaw member, wherein the second jaw member pivots about a first axis substantially simultaneously with rotation of the first axis about a second axis substantially orthogonal to the first axis.
- 22. A surgical tool capable of transmitting torsional ultrasonic vibrations, said surgical tool comprising a longitudinally extending first guide member having a first jaw member at a distal end thereof having an operating surface with a profile comprising an angled cutting element and a coagulating element, a second jaw member movable into and out of operative relationship with the first jaw member and a carrier, the second jaw member having a surface which has a complementary shape to that of the operating surface of the first jaw member, and operating means for actuating the second jaw member so adapted that the second jaw member pivots about a first axis substantially simultaneously with rotation of the first axis about a second axis substantially orthogonal to the first axis and follows a three dimensional path relative to the first jaw member when so moved.
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25. A method for severing and coagulating tissue using torsional ultrasonic vibrations comprising:
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providing a waveguide having a first jaw member at a distal end thereof and capable of transmitting torsional ultrasonic vibrations to the distal end thereof, the first jaw member having an operating surface with a profile comprising an angled cutting element and a coagulating element; providing a second jaw member having a surface which has a complementary shape to that of the operating surface of the first jaw member; moving the second jaw member into and out of operative relationship with the first jaw member comprising pivoting the second jaw member about a first axis and substantially simultaneously rotating the first axis about a second axis disposed at an angle relative to the first axis; clamping tissue between first and second jaw members of an ultrasonic tool capable of transmitting torsional ultrasonic vibrations to the distal end thereof; causing torsional ultrasonic vibrations to be transmitted to the first jaw member; and applying pressure to press the tissue between the first and second jaw members for ultrasonically severing and coagulating the tissue. - View Dependent Claims (26, 27, 28, 29)
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Specification