Patent ID: 8353942

Claim:
A catheter for the treatment of reperfusion injury by locally cooling blood in an internal blood-conveyance pathway and permitting an interventional tool to pass through the internal blood-conveyance pathway while blood is flowing to perform interventional treatment, the cooling catheter comprising: a flexible shaped catheter shaft configured to be inserted into a blood vessel of a patient, having a proximal end and a distal end, said catheter shaft having an inner core defining an inner blood conveyance lumen, a first coolant lumen having an arcuate cross-section in thermal contact along an axial length of a first peripheral wall region of said inner blood conveyance lumen, and a second coolant lumen having an arcuate cross-section in thermal contact along said axial length of a second peripheral wall region of said inner blood conveyance lumen; wherein said first and second coolant lumen are in thermal contact with each other across a septum wall extending the length of the catheter shaft; and wherein said first and second coolant lumen are in fluid contact adjacent to said distal end of said catheter shaft through an interconnecting slot in said septum wall, whereby coolant flow delivered to said first coolant lumen is discharged from said second coolant lumen.