Catheter system with on-board temperature probe
First Claim
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1. A catheter system for controlling the temperature of a patient, the catheter system comprising:
- a catheter having a shaft and a heat exchange region;
an on-board temperature probe, said temperature probe having a temperature sensor and a signal carrying mechanism such that when said catheter is inserted into the body of a patient such that said heat exchange region is located inside the body of said patient, said signal carrying mechanism extending from said sensor to a location outside of the body of the patient;
said probe having an undeployed configuration and a deployed configuration, said probe movable between said undeployed configuration and said deployed configuration such that when the probe is in said deployed configuration, said sensor is located farther away from said catheter body than when said probe is in said undeployed configuration.
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Abstract
A catheter system for controlling the body temperature of a patient by modifying the temperature of blood flowing within a blood vessel of the patient. The catheter system comprises a catheter body having a heat exchange region in contact with the blood; and a temperature probe having a distal end that extends from the catheter body, thereby monitoring the temperature of blood flowing within the blood vessel.
65 Citations
48 Claims
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1. A catheter system for controlling the temperature of a patient, the catheter system comprising:
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a catheter having a shaft and a heat exchange region;
an on-board temperature probe, said temperature probe having a temperature sensor and a signal carrying mechanism such that when said catheter is inserted into the body of a patient such that said heat exchange region is located inside the body of said patient, said signal carrying mechanism extending from said sensor to a location outside of the body of the patient;
said probe having an undeployed configuration and a deployed configuration, said probe movable between said undeployed configuration and said deployed configuration such that when the probe is in said deployed configuration, said sensor is located farther away from said catheter body than when said probe is in said undeployed configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A catheter system for sensing the temperature of a patient, the catheter system comprising:
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a catheter having a shaft and a heat exchange region;
a temperature probe lumen, the lumen defining an aperture that is located proximal of the heat exchange region; and
a deployable temperature probe, the temperature probe including a temperature sensor and a signal carrying mechanism that extends from the sensor to a location outside of the patient, the temperature probe having an undeployed configuration and a deployed configuration, the temperature probe being movable between the undeployed and deployed configurations;
wherein when the temperature probe is in the deployed configuration, the temperature sensor is located further from the shaft than when the temperature probe is in the undeployed configuration; and
wherein the temperature sensor generates a signal representing a sensed temperature and the signal carrying mechanism transmits the signal from the temperature sensor to the location outside the patient. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A catheter system for controlling the temperature of a patient, the catheter system comprising:
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a heat exchange catheter for placement in the flowing bloodstream of a patient, said catheter having a heat exchange region thereon;
an on board temperature probe, said probe containing temperature sensors and signal carrying mechanisms, said signal carrying mechanisms extending from said sensors to a controller, said probe having an undeployed configuration and a deployed configuration, the temperature probe being movable between the undeployed and deployed configurations, wherein when the temperature probe is in the deployed configuration, the temperature sensor is located upstream in the bloodstream of the patient and further from the shaft than when the temperature probe is in the undeployed configuration;
wherein the temperature sensor generates a signal representing a sensed temperature of the blood in the bloodstream, and the signal carrying mechanism transmits the signal from the temperature sensor to the controller; and
said controller controls the temperature of said heat exchange region in response said signal.
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39. A method of monitoring the body temperature of a patient by monitoring the temperature of blood flowing within a blood vessel of the patient, the method comprising:
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advancing a catheter body comprising a temperature probe lumen that extends along a catheter shaft and that includes an opening defined at a distal end portion into the patient'"'"'s blood vessel such that the opening is in contact with the patient'"'"'s blood; and
deploying a temperature probe from within the temperature probe lumen such that a distal end portion of the deployable temperature probe protrudes through the opening into the blood flowing within the blood vessel. - View Dependent Claims (40, 41, 42, 43, 44)
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45. A method of controlling the body temperature of a patient by monitoring the temperature of blood flowing within a blood vessel of the patient, the method comprising:
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advancing a catheter body comprising a temperature probe lumen that extends along a catheter shaft and that includes an opening defined at a distal portion of said lumen, said opening between said lumen and the patient'"'"'s blood vessel such that the opening is in contact with the patient'"'"'s blood;
deploying a temperature probe, said temperature probe having a temperature sensor, from within the temperature probe lumen such that said temperature sensors protrudes through the opening into the blood flowing within the blood vessel;
generating a signal from said temperature sensor representing the temperature of the blood; and
providing said signal to a controller. - View Dependent Claims (46, 47, 48)
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Specification