Patent ID: 9028445
Filing Date: 2015-05-12
Classification: A61B

Abstract:
1. An apparatus for cooling a coolant to be delivered to a cryo-ablation device, the apparatus comprising: an outer member configured to remain outside the body, the outer member having a proximal end, a distal end, and defining a lumen extending therebetween, wherein the outer member distal end is coupled to an ablation device; a first inner tube at least partially disposed within the outer member lumen and having a coolant delivery lumen in fluid communication with the ablation device, wherein a distal end of the first inner tube extends through the distal end of the outer member; and a second inner tube having an open distal end portion terminating within the outer member lumen such that gaseous coolant formed by evaporation of a liquid coolant released from the second inner tube will flow within the outer member lumen to thereby cool liquid coolant carried by the first inner tube; an interface having a first end and a second end spaced a distance from the first end, wherein the first end is coupled to the distal end of the first inner tube and the second end is coupled to a proximal end of the ablation device; wherein the outer member distal end is closed such that liquid coolant released from the distal end of the second inner tube does not flow into the ablation device.