Knife deployment mechanisms for surgical forceps
First Claim
1. A surgical instrument, comprising:
- a drive assembly movable between a first position and a second position;
a trigger assembly movable between an un-actuated position and an actuated position; and
at least one control member coupled to the drive assembly and movable relative to the trigger assembly, in response to movement of the drive assembly between the first position and the second position, between a blocking position and an unblocking position, the at least one control member configured to limit a range of motion of the trigger assembly between the un-actuated position and the actuated position in accordance with a position of the at least one control member relative to the blocking position and the unblocking position.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical instrument includes an end effector assembly having jaw members movable between spaced-apart, first approximated, and second approximated positions. A knife is selectively movable relative to the end effector assembly between a retracted position, a first extended position, and a second extended position. A trigger is selectively actuatable between a un-actuated position, a first actuated position, and a second actuated position for moving the knife between its respective positions. A control member prevents movement of the trigger when the jaw members are disposed in the spaced-apart position, permits movement of the trigger to the first actuated position but prevents movement beyond the first actuated position when the jaw members are disposed in the first approximated position, and permits movement of the trigger to the second actuated position but prevents movement beyond the second actuated position when the jaw members are disposed in the second approximated position.
165 Citations
18 Claims
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1. A surgical instrument, comprising:
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a drive assembly movable between a first position and a second position; a trigger assembly movable between an un-actuated position and an actuated position; and at least one control member coupled to the drive assembly and movable relative to the trigger assembly, in response to movement of the drive assembly between the first position and the second position, between a blocking position and an unblocking position, the at least one control member configured to limit a range of motion of the trigger assembly between the un-actuated position and the actuated position in accordance with a position of the at least one control member relative to the blocking position and the unblocking 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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an end effector assembly including first and second jaw members, at least one of the first or second jaw members movable relative to the other between a spaced-apart position and an approximated position; a drive assembly operably coupled to the end effector assembly and movable between a first position and a second position to move the at least one of the first or second jaw members between the spaced-apart position and the approximated position; a knife movable between a retracted position and an extended position, wherein the knife extends at least partially between the first and second jaw members; a trigger assembly operably coupled to the knife and movable between an un-actuated position and an actuated position to move the knife between the retracted position and the extended position; and at least one control member coupled to the drive assembly and movable relative to the trigger assembly, in response to movement of the drive assembly between the first position and the second position, between a blocking position and an unblocking position, the at least one control member configured to limit a range of motion of the trigger assembly between the un-actuated position and the actuated position in accordance with a position of the at least one control member relative to the blocking position and the unblocking position. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification