Education and demonstration – Anatomy – physiology – therapeutic treatment – or surgery... – Cardiac massage or artificial respiration
Reexamination Certificate
2011-06-14
2011-06-14
Thai, Xuan M (Department: 3715)
Education and demonstration
Anatomy, physiology, therapeutic treatment, or surgery...
Cardiac massage or artificial respiration
C434S262000
Reexamination Certificate
active
07959443
ABSTRACT:
A system and method of delivering CO2in a respiration closed-loop control system to a respiratory simulator includes (a) providing a CO2supply to a respiratory simulator having a piston/cylinder arrangement; (b) providing flow control hardware between the CO2supply and the piston/cylinder arrangement; (c) generating a first control signal representative of a predefined amount of CO2; and (d) providing the predefined amount of CO2into the piston/cylinder arrangement. Thereafter, either (i) an end-tidal carbon dioxide partial pressure (EtCO2) value is determined based on an amount of CO2emptied from the piston/cylinder arrangement during an exhalation phase of the respiratory simulator or (ii) an EtCO2value is calculated via an equation. A second control signal is generated that is representative of a tidal volume and a breathing frequency representative of a physiological response to the EtCO2value to effect corresponding movement of the piston in a next inhalation and exhalation phase.
REFERENCES:
patent: 5941710 (1999-08-01), Lampotang et al.
patent: 5975748 (1999-11-01), East, IV et al.
patent: 6782900 (2004-08-01), DeYoung et al.
Denson et al., A Computer-Controlled Patient Simulator, JAMA, Apr. 21, 1969, vol. 208, No. 3.
Lampotang et al., A Lung Model of Carbon Dioxide Concentrations with Mechanical or Spontaneous Ventilation, Critical Care Medicine, 1986, vol. 14, No. 12.
Frembgen Stefan
Gremme Maik
IngMar Medical, Ltd.
Musselman Timothy
Thai Xuan M
The Webb Law Firm
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