Surgery – Diagnostic testing – Respiratory
Reexamination Certificate
2005-05-31
2005-05-31
Jones, Mary Beth (Department: 3736)
Surgery
Diagnostic testing
Respiratory
C600S529000, C600S532000, C600S538000, C073S023300
Reexamination Certificate
active
06899683
ABSTRACT:
An indirect calorimeter for measuring the metabolic rate of a subject includes a disposable portion and a reusable portion. The disposable portion includes a respiratory connector configured to be supported in contact with the subject so as to pass inhaled and exhaled gases as the subject breathes. The disposable portion also includes a flow pathway operable to receive and pass inhaled and exhaled gases, having a first end in fluid communication with the respiratory connector and a second end in fluid communication with a source and sink for respiratory gases. The disposable portion is disposed within the reusable portion, which includes a flow meter, a component gas concentration sensor, and a computation unit. The flow meter generates a signal as a function of the instantaneous flow volume of respiratory gases passing through the flow pathway and the component gas concentration sensor generates a signal as a function of the instantaneous fraction of a predetermined component gas in the exhaled gases. The computation unit receives the electrical signals from the flow meter and the concentration sensor and calculates at least one respiratory parameter for the subject as the subject breathes through the calorimeter.
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Barber Theodore W.
Lawrence Craig M.
Mault James R.
Nason Kevin S.
Pearce, Jr. Edwin M.
Cooley & Godward LLP
Healthetech, Inc.
Jones Mary Beth
Mallari Patricia
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