Patent ID: 8900222
Filing Date: 2014-12-02
Classification: A61B,A61M

Abstract:
1. A method of operating a medical device having an expandable element in fluid communication with a supply lumen and an exhaust lumen, the method comprising the steps of: providing a first coolant reservoir, a second coolant reservoir and a vacuum source, wherein the first coolant reservoir, the second coolant reservoir, and the vacuum source are in fluid communication with the expandable element of the medical device; transferring coolant from the first coolant reservoir to the second coolant reservoir; transferring the coolant from the second coolant reservoir to the expandable element through the exhaust lumen, wherein the expandable element is inflated to a target pressure; transferring the coolant from the first coolant reservoir to the expandable element through the supply lumen; and evacuating the coolant from the expandable element with the vacuum source, wherein the steps of transferring the coolant from the first coolant reservoir to the expandable element and evacuating the coolant from the expandable element are regulated to achieve a target coolant flow rate while maintaining a pressure in the expandable element at a level substantially equal to or greater than the target pressure.