Cardiac stimulation devices and methods for measuring impedances associated with the heart
First Claim
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1. An implantable system comprising:
- a first pair of electrodes configured for placement internally in a patient;
a first implantable device comprising a current source operably associated with the first pair of electrodes and configured to produce a current therebetween;
a second pair of electrodes configured for placement internally in a patient;
a second implantable device comprising a voltage measuring circuit operably associated with the second pair of electrodes and configured to measure a voltage therebetween responsive to the current produced by the current source; and
logic in at least one of the first and second implantable device to determine a cardiac condition based at least in part on the current produced by the current source and the voltage measured by the voltage measuring circuit.
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Abstract
An exemplary method includes introducing current between a first pair of electrodes configured for placement internally in a patient, triggering a potential measurement between a second pair of electrodes configured for placement internally in a patient wherein communication of a signal through the patient allows for proper triggering, measuring potential between the second pair of electrodes and, based at least in part on the measuring and the introducing, determining a cardiac condition. Other exemplary methods, devices, systems, etc., are also disclosed.
139 Citations
10 Claims
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1. An implantable system comprising:
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a first pair of electrodes configured for placement internally in a patient; a first implantable device comprising a current source operably associated with the first pair of electrodes and configured to produce a current therebetween; a second pair of electrodes configured for placement internally in a patient; a second implantable device comprising a voltage measuring circuit operably associated with the second pair of electrodes and configured to measure a voltage therebetween responsive to the current produced by the current source; and logic in at least one of the first and second implantable device to determine a cardiac condition based at least in part on the current produced by the current source and the voltage measured by the voltage measuring circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification