Automated ECG lead impedance measurement integrated into ECG gating circuitry
First Claim
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1. A system for measuring the impedance at the electrode-body interface comprising:
- a processor;
an alternating current generator in communication with the processor, the alternating current generator having an output voltage and an output impedance; and
a plurality of electrodes in communication with the processor and the alternating current generator, each electrode having an electrode-body impedance,wherein the processor calculates the impedance at the electrode-body interface in response to the output impedance of the alternating current generator, the output voltage of the alternating current generator and the voltage between two or more of the electrodes.
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Abstract
The present invention relates to a system and method for determining the impedance of an electrode at the electrode-body interface. The electrode-body impedance of one of the electrodes may be calculated using the voltage difference between that electrode and a plurality of other electrodes, and the voltage and impedance of an alternating current generator in communication with the electrodes.
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Citations
31 Claims
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1. A system for measuring the impedance at the electrode-body interface comprising:
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a processor; an alternating current generator in communication with the processor, the alternating current generator having an output voltage and an output impedance; and a plurality of electrodes in communication with the processor and the alternating current generator, each electrode having an electrode-body impedance, wherein the processor calculates the impedance at the electrode-body interface in response to the output impedance of the alternating current generator, the output voltage of the alternating current generator and the voltage between two or more of the electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A gamma camera system comprising:
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a gamma camera; and an impedance measuring device in electrical communication with the gamma camera comprising; a processor; an alternating current generator in communication with the processor, the alternating current generator having an output voltage and an output impedance; and a plurality of electrodes in communication with the processor and the alternating current generator, each electrode having an electrode-body impedance, wherein the processor calculates the impedance at the electrode-body interface in response to the output impedance of the alternating current generator, the output voltage of the alternating current generator and the voltage between two or more of the electrodes, wherein the user of the gamma camera is notified of the electrode-body impedance of the plurality of electrodes.
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17. A stress testing system comprising:
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an ECG device for stress testing; and an impedance measuring device in electrical communication with the ECG stress testing system comprising; a processor; an alternating current generator in communication with the processor, the alternating current generator having an output voltage and an output impedance; and a plurality of electrodes in communication with the processor and the alternating current generator, each electrode having an electrode-body impedance, wherein the processor calculates the impedance at the electrode-body interface in response to the output impedance of the alternating current generator, the output voltage of the alternating current generator and the voltage between two or more of the electrodes, wherein the user of the ECG stress testing system is notified of the electrode-body impedance of the plurality of electrodes.
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18. A defibrillator system comprising:
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a defibrillator; and an impedance measuring device in electrical communication with the defibrillator comprising; a processor; an alternating current generator in communication with the processor, the alternating current generator having an output voltage and an output impedance; and a plurality of electrodes in communication with the processor and the alternating current generator, each electrode having an electrode-body impedance, wherein the processor calculates the impedance at the electrode-body interface in response to the output impedance of the alternating current generator, the output voltage of the alternating current generator and the voltage between two or more of the electrodes, wherein the user of the defibrillator is notified of the electrode-body impedance of the plurality of electrodes.
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19. A EEG system comprising:
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an EEG device; and an impedance measuring device in electrical communication with the EEG device comprising; a processor; an alternating current generator in communication with the processor, the alternating current generator having an output voltage and an output impedance; and a plurality of electrodes in communication with the processor and the alternating current generator, each electrode having an electrode-body impedance, wherein the processor calculates the impedance at the electrode-body interface in response to the output impedance of the alternating current generator, the output voltage of the alternating current generator and the voltage between two or more of the electrodes, wherein the user of the EEG device is notified of the electrode-body impedance of the plurality of electrodes.
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20. A clinical system comprising:
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a plurality of electrodes for attachment to a body of a patient and each of said electrodes having electrode-body impedance; a clinical device in communication with the electrodes; and an impedance measuring device in electrical communication with the clinical device, the impedance measuring device comprising; a processor in communication with the electrodes; and an alternating current generator in communication with the processor and the plurality of electrodes, the alternating current generator having an output voltage and an output impedance; wherein the processor calculates the impedance at the electrode-body interface in response to the output impedance of the alternating current generator, the output voltage of the alternating current generator and the voltage between two or more of the electrodes, wherein the user of the clinical device is notified of the electrode-body impedance of the plurality of electrodes. - View Dependent Claims (21, 22)
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23. A method for measuring the impedance of the body-electrode interface in a system comprising an alternating current generator and a plurality of electrodes, the method comprising:
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measuring an output impedance of the alternating current generator; measuring an output voltage of the alternating current generator; measuring a voltage between two or more electrodes of a plurality of electrodes in communication with the alternating current generator; and calculating an impedance at the electrode-body interface using the output impedance of an alternating current generator, the output voltage of the alternating current generator and the voltage between two or more electrodes. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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Specification