SURGICAL INSTRUMENTS AND METHODS FOR PERFORMING TONSILLECTOMY, ADENOIDECTOMY, AND OTHER SURGICAL PROCEDURES
First Claim
1. A surgical instrument, comprising:
- a housing;
a shaft extending distally from the housing;
an end effector coupled at a distal end of the shaft;
a knife slidably disposed within the shaft, the knife configured to translate through the shaft and relative to the end effector assembly between a retracted position and an extended position; and
a trigger assembly, including;
a trigger coupled to the housing and movable relative to the housing between an un-actuated position and an actuated position; and
a linkage defining a triangular configuration including an apex portion and first and second base portions, the apex portion rotatably coupled to the housing about a linkage pivot, the first base portion disposed on a first side of the apex portion and coupled to the trigger, the second base portion disposed on a second side of the apex portion and coupled to the knife, wherein, in response to movement of the trigger from the un-actuated position to the actuated position, the first base portion is moved proximally, the apex portion is rotated about the linkage pivot, and the second base portion is moved distally to thereby move the knife from the retracted position to the extended position.
1 Assignment
0 Petitions
Accused Products
Abstract
A surgical instrument includes a housing, a shaft extending therefrom and supporting an end effector, a knife, and a trigger assembly. The knife is configured to translate between retracted and extended positions. The trigger assembly includes a trigger movable relative to the housing between un-actuated and actuated positions, and a linkage including an apex and first and second bases. The apex is rotatably coupled to the housing about a pivot. The first base is disposed on a first side of the apex and coupled to the trigger. The second base is disposed on a second side of the apex and coupled to the knife. In response to movement of the trigger from the un-actuated to the actuated position, the first base is moved proximally, the apex is rotated about the pivot, and the second base is moved distally to move the knife from the retracted to the extended position.
21 Citations
20 Claims
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1. A surgical instrument, comprising:
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a housing; a shaft extending distally from the housing; an end effector coupled at a distal end of the shaft; a knife slidably disposed within the shaft, the knife configured to translate through the shaft and relative to the end effector assembly between a retracted position and an extended position; and a trigger assembly, including; a trigger coupled to the housing and movable relative to the housing between an un-actuated position and an actuated position; and a linkage defining a triangular configuration including an apex portion and first and second base portions, the apex portion rotatably coupled to the housing about a linkage pivot, the first base portion disposed on a first side of the apex portion and coupled to the trigger, the second base portion disposed on a second side of the apex portion and coupled to the knife, wherein, in response to movement of the trigger from the un-actuated position to the actuated position, the first base portion is moved proximally, the apex portion is rotated about the linkage pivot, and the second base portion is moved distally to thereby move the knife from the retracted position to the extended position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A surgical instrument, comprising:
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a housing; a deployable member selectively deployable relative to the housing; a trigger assembly, including; a trigger pivotably coupled to the housing about a pivot pin and movable about the pivot pin relative to the housing through an arc defined between an un-actuated position and an actuated position; and a linkage defining a triangular configuration including an apex portion and first and second base portions, the apex portion rotatably coupled to the housing about a linkage pivot, the first base portion disposed on a first side of the apex portion and coupled to the trigger via a first pin-slot engagement, the second base portion disposed on a second side of the apex portion and coupled to the deployable member via a second pin-slot engagement, wherein, in response to movement of the trigger through the arc from the un-actuated position to the actuated position, the first base portion is moved in a first direction, the apex portion is rotated about the linkage pivot, and the second base portion is moved in a second direction opposite the first direction to thereby longitudinally translate the deployable member from a retracted position to an extended position. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification