A surgical device comprising: a closure assembly comprising: (a) a movement unit including (i) a bar and (ii) a contact element, wherein the bar, the contact element, or both move in a direction of a prescribed motion； (b) a latch unit comprising: (i) a latch plate including: (1) a hook latch that selectively receives the bar, the latch plate being movable between: (A) a lockable state where the hook latch is engageable by the bar, and (B) an unlockable state where the hook latch is unengageable by the bar； (c) an indicator mechanism that moves into alignment with the prescribed motion of the contact element, the bar, or both when the latch unit is in the unlockable state so that the indicator is contacted by the bar, the contacting element, or both generating an indication.
