Patent ID: 11883059
Assignee: CILAG GMBH INTERNATIONAL
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. An ultrasonic surgical instrument, comprising:
(a) a handle assembly configured to support an ultrasonic transducer, wherein the handle assembly includes:
(i) a seat portion configured to removably connect to a shaft assembly,
(ii) a yoke operatively connected to the seat portion and configured to translate between a first yoke position and a second yoke position, and
(ii) a trigger selectively pivotal to actuate from an intermediate trigger position to an inward trigger position for activating a portion of the shaft assembly with the trigger in the inward trigger position, wherein the trigger is further selectively pivotal from the intermediate trigger position to an outward trigger position for locking movement of the trigger; and

(b) a mechanical lockout assembly including a closure lever link pivotally connected to each of the trigger and the yoke,
wherein selective movement of the trigger from the intermediate trigger position to the outward trigger position selectively transitions the closure lever link to a locked configuration such that the closure lever link and the yoke prevent movement of the trigger from the outward trigger position to the intermediate trigger position, and
wherein selective movement of the yoke from the first yoke position toward the second yoke position via the seat portion is configured to selectively transition the closure lever link to an unlocked configuration such that the trigger moves from the outward trigger position to the intermediate trigger position thereby allowing the trigger to be selectively actuated toward the inward trigger position.