Gas therapy system
AssigneeFisher & Paykel Healthcare Limited
InventorAmol Man Malla
Life of this patent
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Abstract
A respiratory event determination system can have a controller that determines the presence of a respiratory event. The respiratory event can be a mouth puff event. The controller determines the presence as a function of a sub-window of an expiratory window of the breath. The expiratory window extends between a first time t1 and a second time t2. The sub-window is limited to a portion of the expiratory window. The sub-window can extend between a third time t3 and a fourth time t4. The fourth time t4 can be before the second time t2.
Claims19
1-61. (canceled)
A respiratory system for delivering a flow of gases to a patient, the respiratory system comprising:
- a flow sensor configured to generate a flow signal based at least in part on gas flow within the respiratory system;
- a controller in electronic communication with the flow sensor, wherein the controller is configured to:
- determine a presence of a respiratory event as a function of the flow signal within a sub-window of an expiratory window of a breath, wherein the expiratory window extends between a first time t1 and a second time t2, and wherein the sub-window is limited to a portion of the expiratory window extending between a third time t3 and a fourth time t4, the third time t3 being after the first time ti, wherein the third time t3 is selected as a piecewise function of a characteristic of the breath.
A respiratory system for delivering a flow of gases to a patient, the respiratory system comprising:
- a flow sensor configured to generate a flow signal based at least in part on gas flow within the respiratory system;
- a controller in electronic communication with the flow sensor, wherein the controller is configured to:
- determine a presence of a respiratory event as a function of the flow signal within a sub-window of an expiratory window of a breath, wherein the expiratory window extends between a first time t1 and a second time t2, and wherein the sub-window is limited to a portion of the expiratory window extending between a third time t3 and a fourth time t4, the fourth time t4 being before the second time t2, wherein the fourth time t4 is selected as a piecewise function of a characteristic of the breath.
Dependencies are inferred from the claim text.