The present application is directed to a cannula for insertion into a patient.The cannula includes a first distal section and a second proximal section witha hollow interior extending through each. The first section is positioned distallyof the second section and includes a larger outer diameter. A coating is appliedto the second section. An outer diameter of the coating is smaller than or equalto the outer diameter of the first section. This design prevents the coating fromdetaching from the second section during insertion of the cannula into the patient.In one embodiment, the cannula acts as a guide for inserting the coating into thepatient and the first section protects the leading edge of the coating.
