Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2007-08-14
2007-08-14
Douglas, Steven O. (Department: 3771)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S204180, C128S204210, C128S204260
Reexamination Certificate
active
10794501
ABSTRACT:
A ventilator device delivers ventilatory support to a patient in a back up timed mode when patient respiration is not detected or a spontaneous mode when patient respiration is detected. The timing threshold governing the back-up mode is chosen to deviate from normal expected respiration time for the patient to promote patient initiated ventilation in the spontaneous mode but permit back-up ventilation in the event of apnea. Automated adjustments to the timing threshold during the timed mode are made from the less vigilant timing threshold to a more vigilant threshold at or near a timing of normal expected breathing of the patient. Such adjustments may be made from a minimum to a maximum vigilance timing settings or incrementally there between as a function of time in the timed mode which is preferably the number of delivered machine breaths.
REFERENCES:
patent: 5107831 (1992-04-01), Halpern et al.
patent: 6213119 (2001-04-01), Brydon et al.
patent: 6532960 (2003-03-01), Yurko
patent: 1 346 743 (2003-09-01), None
Douglas Steven O.
Gottlieb Rackman & Reisman PC
Resmed Limited
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