Abstract: The dual mode catheter of the present invention combines an over-the-wire catheter with a MONORAIL (trademark) catheter to allow simultaneous use of and switching between the MONORAIL (trademark) and over-the-wire catheters in situ, for example to manipulate stents, balloons, other medical devices, or combinations thereof. Thus combined, the present invention allows greater control of the medical devices and the catheter by a single physician while simultaneously allowing distal injection of individual components such as iodinated contrast fluids or drugs. Other advantages will be apparent to those of ordinary skill in the medical arts such as reducing necessary exposure to radiation for both doctor and patient.