Patient-ventilator synchronization using dual phase sensors

Details Patient-ventilator synchronization using dual phase sensors Patient-ventilator synchronization using dual phase sensors

2011-05-03

2011-05-03

Bianco, Patricia M (Department: 3772)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S200240, C128S202220, C128S204180, C128S204210

Reexamination Certificate

active

07934499

ABSTRACT:
An improved ventilator which delivers ventilatory support that is synchronized with the phase of the patients respiratory efforts and guarantees a targeted minimum ventilation. Improved synchronization is achieved through an instantaneous respiratory phase determination process based upon measured respiratory airflow as well as measured respiratory effort using an effort sensor accessory, preferably a suprasternal notch sensor. The ventilator processes a respiratory airflow signal, a respiratory effort signal and their respective rates of change to determine a phase using standard fuzzy logic methods. A calculated pressure amplitude is adjusted based upon the calculated phase and a smooth pressure waveform template to deliver synchronized ventilation.

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