LEAK DETERMINATION IN A BREATHING ASSISTANCE SYSTEM
First Claim
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1. A method for estimating a leak flow in a breathing assistance system including a ventilation device connected to a patient, the method comprising:
- accessing data of a flow waveform indicating the flow of gas between the ventilation device and the patient;
identifying a specific portion of the flow waveform; and
performing a linear regression of the identified portion of the flow waveform to determine an estimated leak flow in the breathing assistance system.
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Abstract
Systems and methods for estimating a leak flow in a breathing assistance system including a ventilation device connected to a patient are provided. Data of a flow waveform indicating the flow of gas between the ventilation device and the patient is accessed. A specific portion of the flow waveform is identified, and a linear regression of the identified portion of the flow waveform is performed to determine an estimated leak flow in the breathing assistance system.
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Citations
23 Claims
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1. A method for estimating a leak flow in a breathing assistance system including a ventilation device connected to a patient, the method comprising:
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accessing data of a flow waveform indicating the flow of gas between the ventilation device and the patient; identifying a specific portion of the flow waveform; and performing a linear regression of the identified portion of the flow waveform to determine an estimated leak flow in the breathing assistance system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for controlling breathing assistance provided to a patient, comprising:
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providing breathing assistance to a patient according to one or more operational parameters; estimating a leak flow by; accessing data of a flow waveform indicating the flow of gas between the ventilation device and the patient; identifying a specific portion of the flow waveform; and performing a linear regression of the identified portion of the flow waveform to determine an estimated leak flow in the breathing assistance system; and controlling at least one of the operational parameters based at least on the estimated leak flow. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 21, 22)
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18. A breathing assistance system for providing breathing assistance to a patient, comprising:
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a pneumatic system for providing breathing assistance to a patient; and a controller configured to control one or more operational parameters of the pneumatic system, the controller configured to estimate a leak flow in a breathing assistance system including a ventilation device connected to a patient by; accessing data of a flow waveform indicating the flow of gas between the ventilation device and the patient; identifying a specific portion of the flow waveform; and performing a linear regression of the identified portion of the flow waveform to determine an estimated leak flow in the breathing assistance system. - View Dependent Claims (19, 20)
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23. A controller for a breathing assistance system, the controller including logic instructions embodied in tangible computer readable media and executable by one or more processors to:
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access data of a flow waveform indicating the flow of gas between the ventilation device and the patient; identify a specific portion of the flow waveform; and perform a linear regression of the identified portion of the flow waveform to determine an estimated leak flow in the breathing assistance system.
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Specification