Surgery – Truss – Pad
Patent
1994-02-28
1996-05-07
Sykes, Angela D.
Surgery
Truss
Pad
128716, A61B 508
Patent
active
055136486
ABSTRACT:
A partial body plethysmograph is provided to enable accurate modeling of a human's respiratory system for input frequencies of up to about 96 Hz using transfer impedance measurements. One preferred embodiment comprises a container for sealingly enclosing a portion of the subject's body, a pressure source for generating pressure signals over a predetermined frequency range, an air flow sensor for measuring the flow of air supplied to the subject, a pressure sensor for measuring the pressure applied to the cavity of the subject and a processor for controlling the pressure source, for storing the measured air flow and pressure and for determining the respiratory system impedance of the subject. An eight element model is used by the processor to inversely model the transfer impedance data and thereby determined characteristics of the respiratory system of the subject.
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Huang Stephen
Sykes Angela D.
Trustees of Boston University
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