Surgery – Diagnostic testing – Measuring electrical impedance or conductance of body portion
Patent
1996-12-13
2000-03-28
Apley, Richard J.
Surgery
Diagnostic testing
Measuring electrical impedance or conductance of body portion
607 9, A61B 505
Patent
active
060442948
ABSTRACT:
Methods and apparatus are provided for measuring the impedance of a patient's body. Pulse generating circuitry within a rate-responsive pacemaker is used to generate an impedance measurement signal that is applied to the body of the patient with conventional pacemaker leads. The impedance measurement signal contains a series of multiphasic impedance measurement waveforms, which have no net DC value and zero value after second integration. The impedance measurement signal allows the impedance of the body to be measured without interfering with external cardiac monitoring equipment such as electrocardiogram machines.
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Bornzin Gene A.
Florio Joseph J.
Mortazavi Said
Park Euljoon
Sholder Jason A.
Apley Richard J.
Pacesetter Inc.
Yu Justine R.
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