Methods and apparatus for varying the back-up rate for a...

Details Methods and apparatus for varying the back-up rate for a... Methods and apparatus for varying the back-up rate for a...

2009-10-05

2011-11-08

Douglas, Steven (Department: 3771)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S204260

Reexamination Certificate

active

08051852

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.

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Supplemental Search Report, EP Application No. 04717523.7, European Patent Office, Nov. 5, 2010.

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