Adjustment of ventilator pressure-time profile to balance comfort and effectiveness
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United States of America Patent
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Feb 28, 2012
Grant Date -
Aug 7, 2008
app pub date -
Apr 9, 2008
filing date -
Mar 3, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention is a ventilator whose servo-controller adjusts the degree of support by adjusting the profile of the pressure waveform as well as the pressure modulation amplitude. As the servo-controller increases the degree of support by increasing the pressure modulation amplitude, it also generates a progressively more square, and therefore efficient, pressure waveform; when the servo-controller decreases the degree of support by decreasing the pressure modulation amplitude, it also generates a progressively more smooth and therefore comfortable pressure waveform.
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