#$%^&*AU2007231251B220130627.pdf#####ABSTRACT OF THE DISCLOSURE A stylet has a proximal end a distal end and an outer surface. The stylet is substantially cylindrical. The outer surface of the stylet is treated, or roughened, preferably by a glass peening or a bead blasting operation, such that its maximum 5 profile peak height is greater than 300m, its roughness average is greater than 5F im, and its root mean square roughness is greater than 81-1m. This results in reducing the removal force of the treated stylet from a silicone catheter.1/3 FIGURE 1 130- weight -- 2cm CadicterLoad 1 Direction 21 16 18 12 24 Benich Top Surface , 16 FIGURE 2 12 10
