A coating and drying apparatus for the application of a coating substance to a stent and drying the stent is provided. The gel pad insert is shaped to fit comfortably between the legs of the user and to fasten into the crotch area of the underwear or shorts or pants or like garment of the user. In one embodiment, a surgical access port is provided that includes a housing having a cannula distally extending therefrom. The aerodynamic load simulator has a continuously adjustable spring rate constant assembly configured to adjust the spring rate constant of the induced simulated continuous aerodynamic load over a range of predetermined flight profiles. The method also includes calculating hash value for plural ones of the non-blank field values in at least subset of the set of entries. The ultrasound has a higher frequency within at least one section which is closer to the inlet box than a subsequent section further away from the inlet box, within which subsequent section the ultrasound has as lower frequency.