A percutaneous and minimally invasive instrument for inserting an interspinous process spacer into a patient is disclosed. A private remote desktop service virtual channel is established between the host computer and the client projector. Several modes for processing the drainage comprising spent wash liquid and removed debris contained in the gutter are disclosed, one mode comprising automated processing using a screw conveyor. The first housing also includes a projection having sides that taper outwardly as the sides extend away from the first housing. Lastly, when the control signal is above the third threshold, the controller is operated in a protection mode.