Patent ID: 7066873
Filing Date: 2006-06-27
Classification: A61N

Abstract:
1. A catheter having a proximal end and a distal end for use in a intraluminal treatment system wherein a treating element is advanced from the proximal end of the catheter to the distal end by use of pressurized fluid, the catheter comprising: first, second, third and fourth lumens only, and free of any additional lumens, extending substantially from the proximal end to the distal end of the catheter, the first lumen being sized to slidingly receive the treating element to advance the treating element from the proximal end of the catheter to the distal end of the catheter and to prevent the treating element from exiting the first lumen to outside the catheter at the distal end of the catheter, the first lumen being in fluid communication in two directions with the second and third lumens at the distal end thereof, wherein said second and third lumens are fluid lumens which are able to move fluid from the distal end of the catheter to the proximal end of the catheter to advance the treating element to the distal end of the catheter and are able to move fluid from the proximal end to the distal end of the catheter to return the treating elements from the distal end of the catheter to the proximal end of the catheter and the fourth lumen being open at the distal end and sized to receive a guidewire.