An apparatus schedules execution of a plurality of tasks by a processor. A second valve member has a second seat surface with a tapered contour facing axially upstream. Alternatively, the female component is configured to accept a photodetector, wherein the first V-groove and second V-groove passively align the first optical fiber with the photodetector. The tissue separation tip is arranged to form a tissue gap and provide the at least one surgical instrument access to the tissue gap for performing a medical procedure consonant with the formation of the tissue gap or the performance of work at the surgical site. A sleeve is positioned within the cylinder bore and is movable between a first position, a second position, and a third position, and an electrical actuator is at least partially disposed within the actuator space and is operable in response to the control signal to move the sleeve between the first position, the second position, and the third position.