Surgery – Respiratory method or device – Respiratory gas supply means enters nasal passage
Reexamination Certificate
2005-09-06
2005-09-06
Dawson, Glenn K. (Department: 3761)
Surgery
Respiratory method or device
Respiratory gas supply means enters nasal passage
C128S207140, C128S203220, C128S204180, C128S204220, C128S204230, C128S204260
Reexamination Certificate
active
06938619
ABSTRACT:
Disclosed is an apparatus and method for the delivery of supplemental oxygen gas to a person combined with the monitoring of the ventilation of the person with both being accomplished without the use of a sealed face mask. Preferred embodiments of the present invention combine an oxygen delivery device, a nasal airway pressure sampling device, an oral airway pressure sampling device, and a pressure analyzer connected to the sampling devices to determine the phase of the person's respiration cycle and the person's primary airway. The oxygen delivery device is connected to a controller such that it delivers a higher flow of oxygen to the person during the inhalation phase of the person's respiratory cycle. The invention thus increases end tidal oxygen concentrations with improved efficiency comparative to known open airway devices. Embodiments of the invention can include carbon dioxide sampling tubes that continuously sample air from the nose and mouth to determine carbon dioxide concentration during exhalation.
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International Search Report, Application No. PCT/US01/18891 dated May 22, 2002.
Oridion; 3.0 510(K) Summary Of Safety And Effectiveness Information; Oridion Medical Ltd.
Dawson Glenn K.
Erezo Darwin P
Hogan & Hartson LLP
Scott Laboratories Inc.
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