Abstract: A guiding device for a vascular catheter that is inserted over a guidewire. The guiding device comprising a tapered component for passing through a bore of the vascular catheter and extending from a distal end thereof. The tapered component has an aperture through which the guidewire may pass so that the tapered component (12) may move along the guidewire. A pushing means extends from the tapered component and is configured to extend beyond a proximal end of the vascular catheter. The tapered component comprises a first section, a second section and the third section. The first section is disposed between the proximal end of the tapered component and the second section, the second section is disposed between the first section and the third section, and the third section is disposed between the second section and a distal end of the tapered component. The first section is a cylinder and the second and the third sections are conical. The taper of the second section differs from the taper of the third section.