Surgical instruments with firing system overload protection mechanisms
First Claim
Patent Images
1. A surgical instrument, comprising:
- an end effector;
a trigger actuatable between a first position and a second position;
a firing beam comprising a tissue cutting surface movable from a proximal position to a distal position through the end effector;
an actuation drive operably coupled to the firing beam, the actuation drive movable between an unactuated position and an actuated position in response to actuation of the trigger to move the firing beam from the proximal position to the distal position;
a housing comprising a toggle assembly transitionable between a folded configuration and an expanded configuration, wherein the expanded configuration of the toggle assembly corresponds to the distal position of the firing beam;
wherein in the folded configuration the toggle assembly operably couples the trigger to the actuation drive such that actuation of the trigger causes the actuation drive to move the firing beam;
wherein in the expanded configuration the toggle assembly decouples the trigger from the actuation drive such that actuation of the trigger does not cause the actuation drive to move the firing beam; and
a resetting member operable to return the toggle assembly to the folded configuration.
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Abstract
A surgical instrument that includes an end effector and a trigger that is actuatable between a first position and a second position. An actuation drive is movable between an unactuated position and an actuated position in response to actuation of the trigger. A toggle assembly is transitionable between a folded configuration and an expanded configuration, wherein the toggle assembly is configured to motivate the actuation drive to effectuate a movement in the end effector in the folded configuration. The toggle assembly being configured to bypass the actuation drive when in the expanded configuration. A resetting member is operable to return the toggle assembly to the folded configuration.
2996 Citations
20 Claims
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1. A surgical instrument, comprising:
- an end effector;
a trigger actuatable between a first position and a second position;
a firing beam comprising a tissue cutting surface movable from a proximal position to a distal position through the end effector;
an actuation drive operably coupled to the firing beam, the actuation drive movable between an unactuated position and an actuated position in response to actuation of the trigger to move the firing beam from the proximal position to the distal position;
a housing comprising a toggle assembly transitionable between a folded configuration and an expanded configuration, wherein the expanded configuration of the toggle assembly corresponds to the distal position of the firing beam;
wherein in the folded configuration the toggle assembly operably couples the trigger to the actuation drive such that actuation of the trigger causes the actuation drive to move the firing beam;
wherein in the expanded configuration the toggle assembly decouples the trigger from the actuation drive such that actuation of the trigger does not cause the actuation drive to move the firing beam; and
a resetting member operable to return the toggle assembly to the folded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- an end effector;
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11. A surgical instrument, comprising:
- an end effector;
a trigger actuatable between a first position and a second position;
a firing member comprising a knife movable from a proximal position to a distal position through the end effector;
an actuation drive operably coupled to the firing member, the actuation drive movable between an unactuated position and an actuated position in response to actuation of the trigger to move the firing member from the proximal position to the distal position;
a housing comprising a toggle assembly transitionable between a folded configuration and an expanded configuration, wherein the toggle assembly is configured to transition to the expanded configuration in association with the firing member moving to the distal position;
wherein in the folded configuration the toggle assembly operably couples the trigger to the actuation drive such that actuation of the trigger causes the actuation drive to move the firing member;
wherein the transition of the toggle assembly from the folded configuration to the expanded configuration is configured to decouple the trigger from the actuation drive such that actuation of the trigger does not cause the actuation drive to move the firing member; and
a resetting member operable to return the toggle assembly to the folded configuration. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
- an end effector;
Specification