A robotic medical system comprises a user interface configured for receiving at least one command, a first drive mechanism configured for receiving the outer medical implement, a second drive mechanism configured for receiving the inner medical implement, a linear drive arrangement (e.g., one of a drive screw drive arrangement, a rack and pinion drive arrangement, and a belt/pulley drive arrangement) mechanically coupled to the first and second drive mechanisms, and a motor array. The robotic medical system further comprises an electric controller configured for directing the motor array to cause the first drive mechanism to axially rotate the outer medical implement, to cause the second drive mechanism to axially rotate the inner medical implement, and to cause the linear drive mechanism to linearly translate the first and second drive mechanisms relative to each other in response to the at least one command.