Dual balloon central venous line catheter temperature control system
First Claim
1. A heat exchange catheter comprising:
- a catheter body having at least a heat exchange fluid supply lumen and a heat exchange fluid return lumen; and
at least a distal balloon and a proximal balloon on the catheter body, the balloons and lumens being arranged such that heat exchange fluid flows serially through the balloons.
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Accused Products
Abstract
A system for controlling patient temperature uses a central venous line catheter having axially spaced distal and proximal heat exchange balloons. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient, and with additional lumens for communicating heat exchange fluid to the balloons. Heat exchange fluid temperature is controlled through a feed back loop in which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system.
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Citations
30 Claims
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1. A heat exchange catheter comprising:
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a catheter body having at least a heat exchange fluid supply lumen and a heat exchange fluid return lumen; and
at least a distal balloon and a proximal balloon on the catheter body, the balloons and lumens being arranged such that heat exchange fluid flows serially through the balloons. - View Dependent Claims (2, 3, 4, 5)
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6. A central venous line catheter comprising:
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a substantially elongate structure configured for establishing venous access, said structure having a proximal portion and a distal portion and defining at least a first access lumen in communication with the exterior of the structure at said proximal and distal portions;
a proximal and a distal balloon disposed axially along the substantially elongate structure, the proximal and distal balloons adapted to effect heat exchange with the central venous system;
a heat exchange fluid supply lumen in fluid communication with the distal balloon;
a heat exchange fluid return lumen in fluid communication with the proximal balloon;
wherein a serial fluid flow path is established from the distal balloon to the proximal balloon such that fluid flows from the supply lumen, to the distal balloon, a segment of the return lumen, then to the proximal balloon, then to the remainder of a return lumen. - View Dependent Claims (7, 8, 9, 10)
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11. A patient temperature control system comprising:
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a central venous line catheter having a proximal portion and a distal portion and defining at least a first access lumen in communication with the exterior of the catheter at the proximal and distal portions;
a proximal and a distal balloon disposed axially along the central venous line catheter, the proximal and distal balloons adapted to effect heat exchange with the central venous system;
a heat exchange fluid supply lumen in fluid communication with the distal balloon;
a heat exchange fluid return lumen in fluid communication with the proximal balloon; and
a temperature control unit for providing heat exchange fluid to the heat exchange fluid supply lumen and for receiving heat exchange fluid from the heat exchange fluid return lumen, the heat exchange control unit adapted to change the temperature of a heat exchange fluid circulated in the proximal and distal balloons, wherein a serial fluid flow path is established between the proximal and distal balloons. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A heat exchange catheter comprising:
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a catheter body having at least one heat exchange fluid supply lumen and at least one heat exchange fluid return lumen;
a first coolant tube in communication with said fluid supply lumen;
a second coolant tube in communication with said fluid return lumen;
at least two balloons on said catheter body, said balloons and said fluid supply lumen and said fluid return lumen being arranged such that heat exchange fluid flows serially through said balloons;
at least one infusing tube connected to said catheter body; and
a clamp engaged with said infusing tube, said clamp for selectively blocking fluid flow through said infusing tube. - View Dependent Claims (25, 26)
said coolant tubes further comprises coolant tubing walls;
said infusing tube further comprises infusing tubing walls; and
said coolant tubing walls are thicker than said infusing tubing walls.
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27. A heat exchange catheter comprising:
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a catheter body having at least one heat exchange fluid supply lumen and at least one heat exchange return lumen;
a first coolant tube in communication with said fluid supply lumen, said first coolant tube being constructed of a first material;
a second coolant tube in communication with said return lumen, said second coolant tube being constructed of said first material;
at least two balloons on the catheter body, said balloons and said fluid supply lumen and said return lumen being arranged such that heat exchange fluid flows serially through said balloons; and
at least one infusing tube connected to said catheter body, said infusing tube is constructed of a second material being more compressible than said first material. - View Dependent Claims (28, 29, 30)
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Specification