Multiple lumen heat exchange catheters
AssigneeZoll Circulation, Inc.
InventorsWade A. Keller, Timothy R. Machold
Life of this patent
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Abstract
Catheter devices and methods for intravascular heating and/or cooling of human or veterinary patients. The catheter devices generally comprise catheters having inflow and outflow lumens and at least one curvilinear balloon connected to the inflow and outflow lumens such that heat exchange fluid may be circulated through the balloon(s). The catheter is inserted into the vasculature and heated or cooled fluid is circulated through the balloon(s) to heat or cool blood flowing in heat-exchange proximity to the balloon(s), thereby effecting heating or cooling of all or a portion of the patient's body.
Claims48
A heat exchange catheter for heating or cooling at least a portion of the body of a human or animal patient, said heat exchange catheter comprising:
- a catheter shaft having an inflow lumen and an outflow lumen extending longitudinally therethrough;
- at least one heat exchange balloon element attached to the catheter shaft and fluidly connected to the inflow and outflow lumens such that heat exchange fluid may circulate in the inflow lumen, through the at least one balloon element and out of the outflow lumen;
- said at least one heat exchange-balloon element having a generally helical configuration when heat exchange fluid is being circulated therethrough, such that said at least one heat exchange balloon element makes approximately 1 full rotation about a central axis per 2 to 4 inches of length when in said generally helical configuration.
A heat exchange catheter for heating or cooling at least a portion of the body of a human or animal patient, said heat exchange catheter comprising:
- a catheter shaft having an inflow lumen and an outflow lumen extending longitudinally therethrough;
- at least one heat exchange balloon element attached to the catheter shaft and fluidly connected to the inflow and outflow lumens such that heat exchange fluid may circulate in the inflow lumen, through the at least one balloon element and out of the outflow lumen;
- the balloon element being insertable into the vasculature of the patent and having a helical configuration when heat exchange fluid is being circulated therethrough.
A heat exchange catheter for heating or cooling at least a portion of the body of a human or animal patient, said heat exchange catheter comprising:
- a catheter shaft having an inflow lumen and an outflow lumen extending longitudinally therethrough;
- at least one heat exchange balloon element twisted about a central tube that has a lumen extending longitudinally therethrough, said at least one balloon element being attached to the catheter shaft and fluidly connected to the inflow and outflow lumens such that heat exchange fluid may circulate in the inflow lumen, through the at least one balloon element and out of the outflow lumen;
- the at least one balloon element being insertable into the vasculature of the patent and having a curvilinear configuration when heat exchange fluid is being circulated therethrough;
- wherein the central tube has a proximal end and a distal end and at least one balloon element has a proximal end and a distal end, and wherein:
- the proximal end of a balloon element is connected to the inflow lumen of the catheter shaft such that heat exchange fluid will flow through the inflow lumen and into the proximal end of that balloon element;
- and,
- the lumen of the central tube is connected to the distal end of that balloon element and the proximal end of the central tube is connected to the outflow lumen of the catheter shaft such that heat exchange fluid will flow from the distal end of that balloon element into the lumen of the central tube, through the lumen of the central tube and into the outflow lumen of the catheter shaft.
Dependencies are inferred from the claim text.