Power pack for activating surgical instruments

(canceled)

(canceled)

A surgical system comprising:

• a surgical instrument having a distal portion, a connection portion, and a compartment, the connection portion including a connector connectable to a robot arm for mounting of the surgical instrument to the robot arm so that the instrument can be robotically manipulated by the robot arm to adjust the position of the instrument;
• and
• a power pack loadable into the compartment of the instrument for powering the instrument, the power pack having a first motor and a first engagement member removably engageable with a first movable member of the instrument when the power pack is loaded into the instrument, the power pack effecting movement of the first movable member from a first position to a second position to effect a first function of the instrument, the power pack communicating with a central processing unit remote from the instrument, wherein the power pack controls both movement of the robot arm and movement of the first engagement member to effect the first function.

19-34. (canceled)

39-40. (canceled)