FX-6
this Medtech surgical assistant droid was created during the final decades of the Old Republic, and became the design basis for the FX-7 series. Standing just over 1.8 meters in height, the cylindrical FX-6 moved about on a set of omni-directional rollers, and was equipped with an interchangeable set of manipulator arms. The FX-6 was designed solely for use as a medical assistant, and lacked any sophisticated programming or communications systems. However, its data storage and retrieval systems allowed the FX-6 to maintain detailed records on hundreds of patients simulateously, making it almost indispensible at military hospitals and Rimsoos during the Clone Wars. Note that the Star Wars - Revenge of the Sith Visual Dictionary indicates that this droid is known as the FX-9.