A bolster assembly for use in aligning a tubular interventional device along an outer epidermal layer of a patient. A base portion of the assembly has a first surface for contacting the epidermal layer at an exit site of the tubular interventional device from the body of the patient, and has a second surface generally opposite the first surface. An elongated member is engaged with the base portion second surface and extends therefrom at a first angle. The elongated member and the base portion are structured and aligned to define a passageway to enable passage therethrough of the tubular interventional device. The elongated member is capable of flexure relative to the base portion from the first angle to a second angle generally parallel to the epidermal layer. A retaining member is provided for releasably retaining the elongated member at the second angle.
