Articulating bipolar electrosurgical instrument
First Claim
1. A surgical instrument, comprising:
- a housing supporting a cutter actuation control thereon;
an elongated shaft extending distally from the housing;
a first jaw member coupled to a distal end of the elongated shaft;
a second jaw member coupled to the distal end of the elongated shaft, the second jaw member movable with respect to the first jaw member such that the first and second jaw members have an open condition wherein the first and second jaw members are relatively spaced and a closed condition wherein the first and second jaw members are relatively close to one another;
an elongated knife channel defined in the second jaw member;
a knife carrier slidably disposed within the elongated knife channel;
a knife blade protruding from the knife carrier toward the first jaw member;
a spindle disposed at a distal end of the elongated knife channel; and
a drive cable extending through the knife channel and looping around the spindle to define first and second cable parts on two lateral sides of the spindle, the first and second cable parts extending proximally from the second jaw member into the elongated shaft, the knife carrier coupled to the first cable part such that proximal movement of the first cable part induces proximal movement of the knife carrier and proximal movement of the second cable part induces distal movement of the knife carrier.
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0 Petitions
Accused Products
Abstract
A bipolar electrosurgical instrument has a pair of pivotable juxtaposed jaw members and a locking mechanism operatively associated with a second of the jaw members. The locking mechanism has a first position engaged with the second jaw member for preventing movement of the second jaw member between an axially aligned orientation and at least one angled orientation, and a second position. The second position is disengaged from the second jaw member allowing for movement of the second jaw member between the axially aligned orientation and the at least one angled orientation. The instrument has an actuation mechanism operatively connected to a first of the jaw members with the actuation mechanism operable to move the first jaw member between an axially aligned first orientation and at least one angled orientation. An articulation knob is operatively associated with the locking mechanism and effectuates independent operation of the locking and actuation mechanisms.
1049 Citations
11 Claims
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1. A surgical instrument, comprising:
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a housing supporting a cutter actuation control thereon; an elongated shaft extending distally from the housing; a first jaw member coupled to a distal end of the elongated shaft; a second jaw member coupled to the distal end of the elongated shaft, the second jaw member movable with respect to the first jaw member such that the first and second jaw members have an open condition wherein the first and second jaw members are relatively spaced and a closed condition wherein the first and second jaw members are relatively close to one another; an elongated knife channel defined in the second jaw member; a knife carrier slidably disposed within the elongated knife channel; a knife blade protruding from the knife carrier toward the first jaw member; a spindle disposed at a distal end of the elongated knife channel; and a drive cable extending through the knife channel and looping around the spindle to define first and second cable parts on two lateral sides of the spindle, the first and second cable parts extending proximally from the second jaw member into the elongated shaft, the knife carrier coupled to the first cable part such that proximal movement of the first cable part induces proximal movement of the knife carrier and proximal movement of the second cable part induces distal movement of the knife carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electrosurgical instrument, comprising:
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a housing; an elongated shaft extending distally from the housing, the elongated shaft defining a longitudinal axis; an end effector pivotally supported at a distal end of the elongated shaft about a pivot axis transverse to the longitudinal axis, end effector comprising; first and second jaw members pivotably coupled to the distal end of the shaft about the pivot axis; and a plurality of electrodes with at least one electrode being operatively disposed on the first jaw member and at least another electrode being operatively disposed on the second jaw member, wherein the electrodes transmit radiofrequency energy therebetween; and a reciprocating knife assembly comprising an elongated knife channel defined in at least one of the first and second jaw members, a spindle disposed within the knife channel and a drive cable extending distally from the elongated shaft into the knife channel on a first side of the spindle, looping around the spindle, and extending proximally from the knife channel into the elongated shaft on a second side of the spindle, and a knife slidably disposed with respect to the knife channel and operatively coupled to the drive cable such that proximal movement of the drive cable on the first side of the spindle induces proximal movement of the knife and proximal movement of drive cable on the second side of the spindle induces distal movement of the knife. - View Dependent Claims (9, 10, 11)
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Specification