Cryo-perfusion balloon device

A medical device, comprising:

• an elongate body defining a proximal end and a distal end, the elongate body further defining an injection lumen, an exhaust lumen, and a guidewire lumen;
• a first expandable element coupled to the elongate body, wherein the first expandable element is in fluid communication with the injection lumen and the exhaust lumen;
• a perfusion lumen in fluid communication with the guidewire lumen;
• and
• a sheath movably disposed about at least a portion of the elongate body.

A medical device, comprising:

• an elongate body defining a proximal end and a distal end, the elongate body further defining an first injection lumen, second injection lumen, a first exhaust lumen, and a second exhaust lumen;
• a first expandable element coupled to the elongate body, wherein the first expandable element is in fluid communication with the first injection lumen and the first exhaust lumen;
• a second expandable element coupled to the elongate body, wherein the second expandable element is in fluid communication with the second injection lumen and the second exhaust lumen;
• and
• a perfusion path disposed within the elongate body, the perfusion path extending from a region proximally of the first expandable element to a region distally of the first expandable element.

A method of treating a vascular occlusion, comprising the steps of:

• positioning an expandable element in proximity to the vascular occlusion;
• providing a perfusion path from a region proximally of the expandable element to a region distally of the expandable element, wherein the expandable element surrounds at least a portion of the perfusion path;
• injecting a coolant into the expandable element, thereby cooling at least a portion of the tissue proximate the occlusion;
• and
• conducting a fluid through the perfusion path.

A method of treating a vascular occlusion in a vessel, comprising the steps of:

• positioning a first expandable element in proximity to the vascular occlusion;
• providing a perfusion path from a region proximally of the first expandable element to a region distally of the first expandable element, wherein the first expandable element surrounds at least a portion of the perfusion path;
• positioning a second expandable element proximally to the first expandable element;
• expanding the second expandable element to occlude a portion of the vessel;
• and
• injecting a coolant into the first expandable element, thereby cooling at least a portion of the tissue proximate the occlusion.

A method of treating a vascular occlusion in a vessel, comprising the steps of:

• positioning a first expandable element distally of the vascular occlusion;
• providing a perfusion path from a region proximally of the vascular occlusion to a region distally of the first expandable element, wherein the first expandable element surrounds at least a portion of the perfusion path;
• positioning a second expandable element in proximity to the vascular occlusion;
• expanding the second expandable element to dilate the vessel;
• injecting a coolant into the first expandable element, thereby cooling at least a portion of the tissue distally of the occlusion;
• and
• conducting a fluid through the perfusion path.