Adaptive cycling for respiratory treatment apparatus
First Claim
1. An automated processing method for adapting cycling of a respiratory treatment apparatus that controls a delivery of a synchronized respiratory treatment to a patient, the method comprising:
- controlling generation of inspiratory pressure and expiratory pressure over a first plurality of cycles with a processor, wherein timing of delivery of the expiratory pressure for the first plurality of cycles is based on first cycling criteria; and
controlling generation of inspiratory pressure and expiratory pressure over a second plurality of cycles subsequent to the first plurality of cycles with the processor, wherein timing of delivery of the expiratory pressure for the second plurality of cycles is based on second cycling criteria, the second cycling criteria being different from the first cycling criteria and initiated for operation subsequent to the first plurality of cycles,wherein the second cycling criteria are determined during the first plurality of cycles, andwherein each of the first and second cycling criteria controls synchronization of the respiratory treatment with the patient'"'"'s breathing cycle.
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Abstract
A controller or processor (s) implements detection of respiratory related conditions that may serve as control logic to synchronize pressure treatment delivery with a patient'"'"'s respiratory cycle. Based on data derived from sensor signals associated with the respiratory treatment, a monitoring device, detector or respiratory treatment apparatus may evaluate flow measures from a flow sensor and distinguish flow attributable to the respiratory treatment apparatus and flow attributable to patient respiratory muscles. The determination may serve as a basis of synchronization criteria that controls pressure levels from a pressure treatment apparatus, such as by evaluating the determined patient generated flow or a relationship between total flow and apparatus flow. In some embodiments, data for the cycling conditions is determined in preliminary treatment cycles during which synchronized pressure changes are controlled according to other cycling criteria. The new cycling conditions are then automatically initiated for control of synchronization in subsequent cycles.
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Citations
28 Claims
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1. An automated processing method for adapting cycling of a respiratory treatment apparatus that controls a delivery of a synchronized respiratory treatment to a patient, the method comprising:
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controlling generation of inspiratory pressure and expiratory pressure over a first plurality of cycles with a processor, wherein timing of delivery of the expiratory pressure for the first plurality of cycles is based on first cycling criteria; and controlling generation of inspiratory pressure and expiratory pressure over a second plurality of cycles subsequent to the first plurality of cycles with the processor, wherein timing of delivery of the expiratory pressure for the second plurality of cycles is based on second cycling criteria, the second cycling criteria being different from the first cycling criteria and initiated for operation subsequent to the first plurality of cycles, wherein the second cycling criteria are determined during the first plurality of cycles, and wherein each of the first and second cycling criteria controls synchronization of the respiratory treatment with the patient'"'"'s breathing cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A respiratory treatment apparatus for cycling synchronized respiratory pressure treatment to a patient, the apparatus comprising:
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a patient interface to direct a breathable gas; a flow generator coupled with the patient interface to generate the breathable gas in inspiratory and expiratory pressure cycles through the patient interface; a flow sensor to provide a signal indicative of flow through the patient interface; a processor, coupled with the flow generator and the flow sensor, the processor configured to control; generation of inspiratory pressure and expiratory pressure over a first plurality of cycles, wherein timing of delivery of the expiratory pressure for the first plurality of cycles is based on first cycling criteria; and generation of inspiratory pressure and expiratory pressure over a second plurality of cycles subsequent to the first plurality of cycles, wherein timing of delivery of the expiratory pressure for the second plurality of cycles is based on second cycling criteria, the second cycling criteria being different from the first cycling criteria and initiated for operation subsequent to the first plurality of cycles, wherein the second cycling criteria are determined during the first plurality of cycles, and wherein each of the first and second cycling criteria controls synchronization of the respiratory treatment with the patient'"'"'s breathing cycle. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification