Patent ID: 8518013

Claim:
A catheter for insertion into a patient's body for providing treatment thereto, the catheter comprising: an elongated shaft having a proximal portion extending to a distal portion, the proximal portion having: a plurality of first lumens formed therethrough and at least one septum separating the first lumens in non-coaxial relationship with each other, the first lumens each having an associated flow area for providing the treatment through the proximal portion, the distal portion having a second lumen in fluid communication with the first lumens, the septum terminating distally in the proximal portion to merge the first lumens with the second lumen, the second lumen having a second flow area that is greater than any one of the associated flow areas of the first lumens for providing the treatment to the patient; a manifold hub attached to a proximal end of the proximal portion of the elongated shaft; and a plurality of extension tubes extending proximally from the manifold hub, each of the extension tubes cooperatively configured with the manifold hub to fluidly communicate at least a portion of the treatment to one of the first lumens, each extension tube having an external surface that is not fixedly attached to any other external surface of any other extension tube.