Central venous catheter with heat exchange properties
First Claim
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1. An introducer sheath for a central venous line catheter, comprising:
- a hollow body defining a proximal end, a distal end adapted to be positioned in a patient, and at least one lumen extending therebetween;
said hollow body further comprising at least one coolant lumen and at least one membrane communicating with the at least one coolant lumen;
a barrier in the lumen at or near the proximal end of the body for selectively blocking the lumen; and
at least one temperature sensor mounted on the body at or near the distal end for generating a temperature signal.
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Accused Products
Abstract
An introducer sheath for a central venous catheter includes a sheath body and a temperature sensor mounted distally on the body. Either the catheter or sheath has a heat exchange region through which coolant is circulated to effect heat exchange with the body, with the coolant temperature being controlled in response to signals from the temperature sensor. Arterial dialysis heat exchange catheters and jugular bulb heat exchange catheters are also disclosed.
243 Citations
27 Claims
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1. An introducer sheath for a central venous line catheter, comprising:
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a hollow body defining a proximal end, a distal end adapted to be positioned in a patient, and at least one lumen extending therebetween;
said hollow body further comprising at least one coolant lumen and at least one membrane communicating with the at least one coolant lumen;
a barrier in the lumen at or near the proximal end of the body for selectively blocking the lumen; and
at least one temperature sensor mounted on the body at or near the distal end for generating a temperature signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An introducer sheath, comprising:
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a hollow body defining a proximal end, a distal end adapted to be positioned in a patient, and at least one first lumen extending therebetween, the body also defining a coolant supply lumen and a coolant return lumen;
said hollow body further comprising at least one membrane communicating with the coolant supply lumen;
a barrier in the first lumen at or near the proximal end of the body for selectively blocking the first lumen; and
a distally-located heat transfer region associated with the body and communicating with the coolant supply and return lumens. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An introducer sheath for a central venous catheter, comprising:
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a hollow body defining a proximal end, a distal end adapted to be positioned in a patient, and at least one lumen extending between the proximal end and the distal end;
said hollow body further comprising at least one coolant lumen and at least one membrane communicating with the at least one coolant lumen;
a barrier in the lumen at or near the proximal end of the body for selectively blocking the lumen;
at least one temperature sensor mounted on the body at or near the distal end for generating a temperature signal; and
a heat transfer region established by one or more heat exchange elements, the heat transfer region extending substantially from the proximal end to the distal end of the hollow body.
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20. An introducer sheath for a central venous catheter, comprising:
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a hollow body defining a proximal end, a distal end adapted to be positioned in a patient, at least one first lumen extending between the proximal end and the distal end, a coolant supply lumen, and a coolant return lumen;
said hollow body further comprising at least one membrane communicating with the coolant supply lumen;
a barrier in the first lumen at or near the proximal end of the body for selectively blocking the first lumen; and
a distally-located heat transfer region extending substantially from the proximal end to the distal end of the hollow body and communicating with the coolant supply and return lumens.
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21. An introducer sheath for a central venous catheter, comprising:
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a hollow body defining a proximal end, a distal end adapted to be positioned in a patient, and at least one lumen means for providing entry for the catheter into a patient'"'"'s venous system, the lumen means extending between the proximal end and the distal end;
barrier means for selectively blocking the lumen means, the barrier means being disposed at or near the proximal end of the hollow body;
temperature sensor means for generating a temperature signal, the temperature sensor means being disposed on the body at or near the distal end; and
a heat transfer region established by at least one heat exchange membrane means for transferring heat between the coolant and fluid in the patient'"'"'s venous system, the heat transfer region extending substantially from the proximal end to the distal end of the hollow body. - View Dependent Claims (22, 23, 24)
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25. An introducer sheath for a central venous catheter, comprising:
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a hollow body defining a proximal end, a distal end adapted to be positioned in a patient, and at least one first lumen means for providing entry for the catheter into a patient'"'"'s venous system, the at least one first lumen means extending between the proximal end and the distal end, the body also defining a coolant supply means for transporting coolant in a direction from the proximal end to the distal end of the hollow body and a coolant return means for transporting coolant in a direction from the distal end to the proximal end of the hollow body;
barrier means for selectively blocking the first lumen means, the barrier means being disposed at or near the proximal end of the hollow body; and
a heat transfer region established by at least one heat exchange membrane means for transferring heat between the coolant and fluid in the patient'"'"'s venous system, the heat transfer region extending substantially from the proximal end to the distal end of the hollow body, each of the at least one heat exchange means communicating with the coolant supply means and coolant return means. - View Dependent Claims (26, 27)
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Specification