Collection catheter and method

摘要

A catheter for collecting fluid (such as blood) from a vessel (such as a coronary sinus) of a patient has a distal end with a fluid inlet to receive a blood and at least one fluid outlet disposed proximally to the fluid inlet. An occlusion member is positioned between the fluid inlet and the fluid outlet. The catheter is placed in a blood vessel with the fluid inlet disposed to receive antegrade flow. The blood vessel is occluded with the occlusion member. Flow through the catheter is passed through the fluid outlet and back into the vessel proximal to the occlusion member. A valve selectively opens and closes the fluid outlet.