SYSTEMS AND METHODS FOR INTRAVASCULAR COOLING
First Claim
1. A device, comprising:
- an insertion device adapted to fluidicly communicate with a source of an infusate; and
a controller adapted to control at least one of (a) a temperature of the infusate, (b) an infusion rate of the infusate through the insertion device, and (c) a volume of the infusate passing through the insertion device in a downstream direction, in accordance with a temperature of a blood and infusate mixture downstream relative to an infusate exit location of the insertion device while the insertion device is placed in a blood vessel of a patient with a downstream flow of blood for infusion of the infusate, and in accordance with at least one of (a) a temperature of the infusate at least one of at and adjacent the exit location, (b) a temperature upstream and adjacent the exit location, and (c) a core body temperature of the patient.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems for infusing a cooled infusate to a target location in a patient are described. A temperature of the blood and infusate admixture upstream of the catheter as well as at other locations along the catheter may be monitored and a feedback system utilized to control the volume, temperature, and/or infusion rate of the infusate so as to achieve a predetermined temperature at the target location. Control may also be based on the patient'"'"'s native vessel flow rate. The system may monitor or calculate hematocrit upstream of the catheter and adjust infusion so as to provide sufficient oxygenation of the blood and infusate admixture. The system may also monitor reflux of the infusate past a distal end of the catheter and reduce infusion upon the detection of reflux.
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Citations
70 Claims
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1. A device, comprising:
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an insertion device adapted to fluidicly communicate with a source of an infusate; and a controller adapted to control at least one of (a) a temperature of the infusate, (b) an infusion rate of the infusate through the insertion device, and (c) a volume of the infusate passing through the insertion device in a downstream direction, in accordance with a temperature of a blood and infusate mixture downstream relative to an infusate exit location of the insertion device while the insertion device is placed in a blood vessel of a patient with a downstream flow of blood for infusion of the infusate, and in accordance with at least one of (a) a temperature of the infusate at least one of at and adjacent the exit location, (b) a temperature upstream and adjacent the exit location, and (c) a core body temperature of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 65, 68, 69)
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27. A device, comprising:
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an insertion device adapted to fluidicly communicate with a source of an infusate; a plurality of sensors; and a controller adapted to receive signals from the sensors indicative of at least one parameter of a bodily fluid moving in a downstream direction and to control at least one of (a) at least one parameter of the infusate, (b) an infusion rate of the infusate flowing through the insertion device, and (c) a volume of the infusate passing through the insertion device, in accordance with the signals from the sensors; wherein at least one of the sensors is positioned downstream relative to an infusate exit location of the insertion device; and wherein at least another one of the sensors is adapted to measure at least one of (a) the at least one parameter of the infusate at least one of at and adjacent the exit location, (b) the at least one parameter upstream and adjacent the exit location, and (c) a core body temperature of the patient. - View Dependent Claims (28, 29, 30)
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31. An infusion method, comprising:
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a) infusing an infusate into a patient through an insertion device in a downstream direction; b) at least one of measuring and calculating at least one parameter of a bodily fluid; and c) controlling at least one of (i) at least one parameter of the infusate, (ii) an infusion rate of the infusate through the insertion device, and (iii) a volume of the infusate passing through the insertion device, in accordance with at least one parameter of a blood and infusate mixture downstream relative to an infusate exit location of the insertion device when the insertion device is placed in a blood vessel of the patient for infusion of the infusate, and in accordance with at least one of (a) the at least one parameter of the infusate at the exit location, (b) the at least one parameter outside the insertion device upstream and adjacent the exit location, and (c) a core body temperature of the patient. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 70)
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44. An infusion method comprising:
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a) infusing an infusate into a system through an insertion device in a downstream direction; b) measuring at least one parameter of a system fluid in the system including at least one of a fluid and gas; and c) controlling at least one of (i) at least one parameter of the infusate, (ii) an infusion rate of the infusate through the insertion device, and (iii) a volume of the infusate passing into the system, in accordance with the at least one parameter of the system fluid upstream and adjacent an infusate exit location on the insertion device. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. An infusion method, comprising:
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a) infusing an infusate into a system through an insertion device in a first direction, said system having at least one of a fluid and gas flowing therein in the first direction; b) at least one of measuring and calculating at least one parameter of the at least one of a fluid and gas; and c) controlling at least one of (i) at least one parameter of the infusate, (ii) an infusion rate of the infusate through the insertion device, and (iii) a volume of the infusate passing through the insertion device, in accordance with at least one parameter of a mixture of the infusate and the at least one of a fluid and gas at a position spaced a distance from the infusate exit location along the first direction when the insertion device is placed in the system for infusion of the infusate, and in accordance with at least one of (a) the at least one parameter of the infusate at the exit location, (b) the at least one parameter outside the insertion device, adjacent the exit location, and spaced away from the exit location along a second direction opposite the first direction, and (c) an average value of a parameter of the at least one of a fluid and gas in the system.
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55. A device, comprising:
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an elongate sensor support device adapted to be inserted into a patient and having one or more sensors connected to it along its length; and a controller adapted to receive signals from the sensors and control at least one of (a) at least one parameter of an infusate infused into the patient through an insertion device in a downstream direction, (b) an infusion rate of the infusate, and (c) a volume of the infusate, in accordance with at least one parameter of a blood and infusate mixture downstream relative to an infusate exit location of the insertion device while the insertion device is placed in a blood vessel of a patient with a downstream flow of blood for infusion of the infusate, and in accordance with at least one of (a) at least one parameter of the infusate at least one of at and adjacent the exit location, (b) at least one parameter of the infusate upstream and adjacent the exit location, and (c) a core body temperature of the patient. - View Dependent Claims (56)
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57. A device, comprising:
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an elongate sensor support device adapted to be inserted into a patient and having one or more sensors connected to it along its length; and a controller adapted to receive signals from the sensors and control at least one of (a) at least one parameter of an infusate infused into the patient through an insertion device in a first direction, (b) an infusion rate of the infusate, and (c) a volume of the infusate, in accordance with at least one parameter of a blood and infusate mixture at a first position, said first position adjacent an infusate exit location on the insertion device and spaced a distance away from the infusate exit location along a second direction opposite the first direction. - View Dependent Claims (58)
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59. A device, comprising:
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an insertion device adapted to fluidicly communicate with a source of an infusate and positioned in a system filled with at least one of a fluid and gas flowing in a first direction; a sensor located exterior to an internal lumen of the insertion device, the sensor located a distance away from an infusate exit location of the insertion device along a second direction opposite the first direction; and a controller adapted to receive signals from the sensor indicative of at least one parameter of at least one of the fluid and gas to control at least one of (a) at least one parameter of the infusate, (b) an infusion rate of the infusate through the insertion device, and (c) a volume of the infusate passing through the insertion device in accordance with the signals from the sensor. - View Dependent Claims (60, 61, 62, 63, 64)
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66. A device, comprising:
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an insertion device adapted to fluidicly communicate with a source of an infusate and to be placed in a blood vessel; and a controller adapted to control at least one of (a) a temperature of the infusate, (b) an infusion rate of the infusate through the insertion device into the blood vessel, and (c) a volume of the infusate passing through the insertion device in a downstream direction into the blood vessel, in accordance a native vessel blood flow rate in the blood vessel.
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67. An infusion method, comprising:
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a) infusing an infusate into a patient through an insertion device in a downstream direction; and b) controlling at least one of (i) at least one parameter of the infusate, (ii) an infusion rate of the infusate through the insertion device, and (iii) a volume of the infusate passing through the insertion device, in accordance with a flow rate of a bodily fluid in the downstream direction.
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Specification