Surgery – Diagnostic testing – Measuring electrical impedance or conductance of body portion
Reexamination Certificate
2004-05-12
2008-03-04
Hindenburg, Max (Department: 3736)
Surgery
Diagnostic testing
Measuring electrical impedance or conductance of body portion
C600S300000
Reexamination Certificate
active
07340295
ABSTRACT:
The impedance of intracellular water (ZICW), height (H), weight (W), and age (A) of the subject are included as variables in an equation that estimates muscle mass (MM). Impedance of extracellular water (ZECW) is determined by a step of applying an alternating current to the body and measuring the resulting impedance. Impedance of total body water (ZTBW) is determined by a step of applying a high frequency alternating current to the body and measuring the resulting impedance. ZICWis determined by calculating an inverse of the result of subtracting an inverse of measured ZECWfrom an inverse of measured ZTBW. The equation for muscle mass is of the form: MM−aH2/ZICW+bW+cA+d.
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Hindenburg Max
McDermott Will & Emery LLP
Pani John
Tanita Corporation
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