초록 ▼

A method and apparatus for performing hypothermia of a selected organ without significant effect on surrounding organs or other tissues, by perfusion of the organ with blood cooled externally from the body of the patient. A flexible supply catheter is inserted percutaneously into an artery. Blood fr

A method and apparatus for performing hypothermia of a selected organ without significant effect on surrounding organs or other tissues, by perfusion of the organ with blood cooled externally from the body of the patient. A flexible supply catheter is inserted percutaneously into an artery. Blood from the supply catheter is cooled in a finned tube heat exchanger or a fluid bath. A flexible delivery catheter is inserted percutaneously through the vascular system of the patient to place the distal end of the catheter in an artery feeding the selected organ. An occlusion device is expanded to occlude the feeder artery at a point proximal to the distal end of the delivery catheter. Cooled blood from the chiller is pumped through the delivery catheter to an outlet near the distal end of the catheter, to cool the selected organ, distal to the tip of the delivery catheter.

대표청구항 ▼

[ I claim:] [1.] An apparatus for selective organ hypothermia by perfusion, said apparatus comprising:a chiller;a flexible elongated supply catheter, said supply catheter having a proximal end attachable to an inlet of said chiller, said supply catheter having a distal end percutaneously insertable

[ I claim:] [1.] An apparatus for selective organ hypothermia by perfusion, said apparatus comprising:a chiller;a flexible elongated supply catheter, said supply catheter having a proximal end attachable to an inlet of said chiller, said supply catheter having a distal end percutaneously insertable into an artery of a patient;a flexible elongated delivery catheter, said delivery catheter having a proximal end attachable to an outlet of said chiller, said delivery catheter having sufficient length and sufficiently small diameter to be insertable percutaneously through a vascular system of a patient to a feeder artery of a selected organ of a patient, said delivery catheter having a lumen for flow of cooled blood from said chiller to a feeder artery of a selected organ of a patient;an insulating layer in said delivery catheter between said blood lumen and the outer surface of said delivery catheter; anda blood outlet formed in said blood lumen, near a distal end of said delivery catheter.