Loading patent…
AssigneeFisher & Paykel Healthcare Limited
InventorSimei Gomes WYSOSKI
Estimating the term…
We provide a respiratory therapy system comprising: a flow generator; a humidifier; a respiratory conduit a patient interface coupled to the respiratory conduit to deliver a gases flow to a patient; a sensor configured to determine pressure or flow of the gases flow; a controller configured to control the flow generator to generate the gases flow; and the controller configured to: a) retrieve at least one first signal associated with or indicative of a gases flow and/or pressure in the respiratory conduit; b) determine a measure of at least one first parameter associated with gases flow perturbations and/or pressure perturbations for at least one portion of the retrieved at least one first signal; and c) determine the presence of liquid in the respiratory conduit based at least in part on the measure(s) of the at least one first parameter meeting a first threshold. The system can be used to reduce or alleviate condensation in a respiratory gas deliver conduit.
A respiratory therapy system configured to detect the presence of liquid water in a breathing gases respiratory conduit for use in respiratory treatment of a patient, the system comprising a controller configured to:
The respiratory therapy system of claim any preceding claim, wherein the controller is further configured to:
The respiratory therapy system of any preceding claim, wherein the at least one first parameter is associated with spikes caused by perturbations in gases flow and/or pressure.
The respiratory therapy system according to any preceding claim, wherein the at least one first parameter relates to any one or more of:
The respiratory therapy system of any preceding claim, wherein the controller is further configured to output a control signal, the control signal being output in response to the determination of presence of liquid water in the respiratory conduit.
The respiratory therapy system of any previous claim, wherein at least one of the first parameter(s) is determined based at least in part on a frequency analysis of the at least one first signal.
The respiratory therapy system of any previous claim, wherein at least one first parameter associated with flow perturbations and/or pressure perturbations is determined based at least in part on a wavelet analysis of the at least one first signal.
The respiratory therapy system of any previous claim, wherein the controller is further configured to filter at least one of the first signal(s) using a filter prior to determining the presence of liquid water in the respiratory conduit.
The respiratory therapy system of any previous claim, wherein the controller is further configured to filter at least one of the first signal(s) using a filter prior to determining at least one of the first parameter(s).
The respiratory therapy system of any preceding claims, wherein the first threshold is derived using machine learning.
The respiratory therapy system of any preceding claim, further comprising at least one of:
The respiratory therapy system of any preceding claim, wherein the controller is configured to:
The respiratory therapy system of any preceding claim, wherein the controller comprises a controller of a flow generator of the respiratory therapy system.
A computer implemented method configured to detect the presence of liquid in a breathing gases respiratory conduit of a respiratory therapy system for use in a respiratory treatment of a patient, comprising
A non-transitory computer readable medium comprising instructions, when executed by a processor/controller of a respiratory therapy system, which cause the respiratory therapy system to detect the presence of liquid water in a breathing gases respiratory conduit for use in a respiratory treatment of a patient by:
A respiratory therapy system comprising:
A high flow respiratory therapy system comprising:
A pressure delivery system comprising
Dependencies are inferred from the claim text.