Patent ID: 7323006

Claim:
An interventional device for introduction through a vascular penetration to a treatment site in a vessel comprising: a catheter shaft having a proximal extremity, a distal extremity and an interventional element coupled to the distal extremity; a guidewire tube having a proximal end, a distal end and a guidewire lumen therebetween configured to slidably receive a guidewire, the distal end being coupled to the distal extremity of the catheter shaft and the proximal end being separate from the catheter shaft; and a collar having a distal portion with a distal end positionable in the vascular penetration and a proximal portion adapted to remain outside the vascular penetration, the collar having a first longitudinal passageway configured to slidably receive the proximal extremity of the catheter shaft without substantial leakage of blood therethrough, and a second longitudinal passageway configured to slidably receive the proximal end of the guidewire tube without substantial leakage of blood therethrough, wherein the first passageway is discrete from the second passageway from the distal end through at least part of the proximal portion, and wherein the proximal extremity of the catheter shaft and the guidewire tube each have a length sufficient to extend to the vascular penetration when the interventional device is positioned at the treatment site.