RF cannulas are used by the doctor to guide the electrode to the desired location. The quality of construction and resistance of the canola and of course the variety of sizes and types (Curved Sharp-Curved Blunt-Straight Sharp) play an important role in this.

One of the cannulas considered by doctors is SIDEKICK cannulas, which can increase the size of the LESION up to twice by designing a cut at the end of the cannula for electrode exit (thermocouple).

Boston Scientific (COSMAN) cannulas are produced in different colors based on length, which makes their diagnosis quick and easy for the doctor and the user.