Measurement of patient physiological parameters
First Claim
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1. A system, comprising:
- a means for measuring a physiological parameter of a patient;
an implantable measurement device including an electrode, the measurement device configured to be implanted such that the electrode is in contact with a wall of a blood vessel of the patient; and
a control system coupled to the implantable measurement device, the control system programmed to determine an impedance of the blood vessel using the implantable measurement device, and calculate patient information based at least in part on the blood vessel impedance, wherein the control system is configured to selectively adjust the program for determining an impedance of the blood vessel based at least in part on data from the means for measuring a physiological parameter.
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Abstract
A method of determining one or more physiological parameter of a patient by providing a plurality of implantable electrodes proximate a blood vessel of the patient, applying a measurement signal through the plurality of electrodes, the measurement signal having a known parameter, obtaining a resultant signal through the plurality of electrodes, the resultant signal having a resultant parameter, calculating vascular impedance based on the measurement signal and the resultant signal, and calculating a physiological parameter based on the vascular impedance. In some embodiments, the physiological parameter is utilized to modify a therapy signal controlling therapy delivered to the patient.
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Citations
31 Claims
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1. A system, comprising:
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a means for measuring a physiological parameter of a patient; an implantable measurement device including an electrode, the measurement device configured to be implanted such that the electrode is in contact with a wall of a blood vessel of the patient; and a control system coupled to the implantable measurement device, the control system programmed to determine an impedance of the blood vessel using the implantable measurement device, and calculate patient information based at least in part on the blood vessel impedance, wherein the control system is configured to selectively adjust the program for determining an impedance of the blood vessel based at least in part on data from the means for measuring a physiological parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method, comprising:
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causing a means for measuring a physiological parameter of a patient to be manufactured and made available to a user; causing an implantable measurement device to be manufactured and made available to the user, the implantable measurement device including an electrode; causing a control system to be manufactured and made available to the user, the control system coupleable to the implantable measurement device; and providing instructions to the user, the instructions comprising; implanting the implantable measurement device within a patient such that the electrode is in contact with a wall of a blood vessel of the patient; causing the control system to determine an impedance of the blood vessel using the implantable measurement device; causing the control system to calculate patient information based at least in part on the blood vessel impedance; and comparing data from the means for measuring a physiological parameter of the patient to the impedance of the blood vessel. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of calibrating a system, the system including a means for measuring a physiological parameter of a patient, an implantable measurement device including an electrode implanted in contact with a wall of a blood vessel of the patient, and a control system coupled to the measurement device, the method comprising:
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causing the control system to determine an impedance of the blood vessel using the implantable measurement device; causing the control system to transmit patient information to a display, the patient information based at least in part on the blood vessel impedance; and comparing data from the means for measuring a physiological parameter of the patient to the impedance of the blood vessel.
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Specification