Catheter system with on-board temperature probe
First Claim
Patent Images
1. A catheter system for sensing the temperature of a patient, the catheter system comprising:
- a fluid flow heat exchange catheter having a shaft and a heat exchange region controlled by a flow of heat exchange fluid;
a temperature probe lumen, the lumen defining an aperture that is located proximal of the heat exchange region;
a deployable temperature probe, the temperature probe including a temperature sensor and a signal carrying mechanism that extends from the temperature 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; and
a removable constraint that constraints the amount of movement of the temperature probe within the temperature probe humen, the temperature probe moving to the deployed configuration upon removal of the constraint by an operator;
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.
6 Assignments
0 Petitions
Accused Products
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.
-
Citations
38 Claims
-
1. A catheter system for sensing the temperature of a patient, the catheter system comprising:
-
a fluid flow heat exchange catheter having a shaft and a heat exchange region controlled by a flow of heat exchange fluid;
a temperature probe lumen, the lumen defining an aperture that is located proximal of the heat exchange region;
a deployable temperature probe, the temperature probe including a temperature sensor and a signal carrying mechanism that extends from the temperature 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; and
a removable constraint that constraints the amount of movement of the temperature probe within the temperature probe humen, the temperature probe moving to the deployed configuration upon removal of the constraint by an operator;
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 (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. 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:
-
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 temperature probe protrudes through the opening into the blood flowing within the blood vessel, wherein the deployable temperature probe comprises shape memory material at a tip portion at the distal end portion such that when it warms, it curves through the opening. - View Dependent Claims (20, 21, 22, 23)
-
-
24. A catheter system for sensing the temperature of a patient, the catheter system comprising:
-
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, a signal carrying mechanism that extends from the temperature sensor to a location outside of the patient, and a constraint that constrains the amount of movement of the temperature probe within the temperature probe lumen, the temperature probe having an undeployed configuration and a deployed configuration, the temperature probe being movable from the undeployed configuration to the deployed configuration upon removal of the constraint by an operator;
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.
-
-
25. A catheter system for sensing the temperature of a patient, the catheter system comprising:
-
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 temperature sensor to a location outside of the patient, the temperature probe having an undeployed configuration and a deployed configuration, the temperature probe being heat activated to move automatically 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 (26)
-
-
27. A catheter system for sensing the temperature of a patient, the catheter system comprising:
-
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 temperature sensor to a location outside of the patient, the temperature probe having an undeployed configuration and a deployed configuration, the temperature probe being spring activated to move automatically 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.
-
-
28. A catheter system for sensing the temperature of a patient, the catheter system comprising:
-
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, a signal carrying mechanism that extends from the sensor to a location outside of the patient, and a biodegradable restraining element the temperature probe having an undeployed configuration and a deployed configuration, the temperature probe being automatically 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.
-
-
29. A catheter system for sensing the temperature of a patient, the catheter system comprising:
-
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;
a controller for receiving signals from the signal carrying mechanism, the controller being configured to use the signals to control the body temperature of the patient by modifying the temperature of blood flowing within a blood vessel of the patient;
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.
-
-
30. 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:
-
inserting a catheter body into the patient'"'"'s blood vessel, the catheter body including a temperature probe lumen that extends along a catheter shaft, the temperature probe lumen including an opening defined at a distal end portion of the lumen and a ramp coupled to the opening;
advancing the catheter body 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 the ramp guides a distal end portion of the temperature probe through the opening and into the blood flowing within the blood vessel;
wherein the blood vessel is selected from the group consisting of the inferior vena cava and the femoral artery. - View Dependent Claims (31, 32)
-
-
33. A catheter system for sensing the temperature of a patient, the catheter system comprising:
-
a fluid flow heat exchange catheter having a shaft and a heat exchange region controlled by a flow of heat exchange fluid;
a temperature probe lumen, the lumen defining an aperture that is located proximal of the heat exchange region; and
a deployable temperature probe selected from the group consisting of a heat-activated temperature probe, a spring-activated temperature probe, and a temperature probe having a biodegradable restraining element, the temperature probe including a temperature sensor and a signal carrying mechanism that extends from the temperature sensor to a location outside of the patient, the temperature probe having an undeployed configuration and a deployed configuration, the temperature probe being automatically 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 (34, 35, 36, 37, 38)
-
Specification