Surgical system for controlling the infusion of fluid to and the evacuation of fluid and material from an operating field

摘要

A system for controlling the infusion of fluid to an operating field at a selected predetermined and programmed pressure, as a counterpart to an instrument for severing material from an object in the field, and for evacuating the severed material from the field in a suspension or emulsion of the infusion fluid. The system includes a simplified fluid flow control system for changing the pressure of the infusion fluid flow into the operating field during different modes of operation of the system.