Patent ID: 11864822
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. A surgical instrument, comprising:
an end effector assembly;
a first component selectively movable relative to the end effector assembly;
a trigger assembly coupled to the first component and selectively movable from an un-actuated position to an actuated position to move the first component relative to the end effector assembly;
a biasing member coupled to the trigger assembly and configured to apply a biasing force to the trigger assembly to bias the trigger assembly towards the un-actuated position;
a second component selectively movable relative to the end effector assembly;
a lever assembly coupled to the second component and selectively movable from a first position to a second position to move the second component relative to the end effector assembly, wherein the lever assembly and the trigger assembly are operably coupled with one another:
such that actuation initiated at the lever assembly effects movement of the lever assembly from the first position to the second position and also effects movement of the trigger assembly from the un-actuated position towards the actuated position; and
such that actuation initiated at the trigger assembly effects movement of the trigger assembly from the un-actuated position to the actuated position independently of the lever assembly; and

a linkage assembly coupled to the lever assembly and the biasing member, the linkage assembly configured to reduce the biasing force applied to the trigger assembly when actuation initiated at the lever assembly effects movement of the trigger assembly from the un-actuated position towards the actuated position compared to the biasing force applied to the trigger assembly when actuation initiated at the trigger assembly moves the trigger assembly from the un-actuated position towards the actuated position independently of the lever assembly with the lever assembly remaining in the first position.