Simultaneous surgical injection and aspiration with pedal control

摘要

A surgical system is provided that is capable of supplying pneumatic pressure and a vacuum. A first viscous fluid is injected into a target tissue using pneumatic pressure from the system. A mode of operation of the system is changed to provide vacuum and pneumatic pressure. A second viscous fluid is aspirated from the target tissue using vacuum from the system, simultaneously with injecting the first viscous fluid, but the pneumatic pressure remains substantially constant during aspiration. The invention provides an improved foot pedal (120) for controlling the simultaneous injection and aspiration of viscous fluids in the system. The foot pedal has a first range of motion in a generally vertical plane, in which the system provides proportional pneumatic pressure and a second range of motion in a generally vertical plane, in which the system supplies constant pneumatic pressure and proportional vacuum. <IMAGE>