Fisher & Paykel Healthcare Limited

Charles Grady Cantrell

Anton Kim Gulley

David Martin Russell

Rhys Matthew James Williams

Russel William Burgess

Bryn Alan Edwards

Yi Lin Huang

Brett James Ryan

The present disclosure provides for a flow therapy apparatus that can implement one or more closed loop control systems to control the flow of gases of a flow therapy apparatus. The flow therapy apparatus can monitor blood oxygen saturation (SpO2) of a patient and control the fraction of oxygen delivered to the patient (FdO2). The flow therapy apparatus can automatically adjust the FdO2 in order to achieve a targeted SpO2 value for the patient.

Closed loop oxygen control

Systems and methods can determine respiratory rates of a patient using a respiratory device by performing one or more frequency analyses of a signal from the gases flow. The signal from the gases flow can be one that varies with the patients breathing. The system can include a non-sealed patient interface, such as a nasal cannula in a nasal high flow therapy, or any other patient interfaces. The respiratory system can also detect whether the patient has taken off the patient interface and/or whether the patient connected to the patient interface is talking or eating. Data of the patients use of the respiratory system and the patients respiratory rates can provide therapy compliance and long-term trend of use information and/or progress in the patients respiratory functions and/or other physiological functions.

Respiratory rate monitoring for respiratory flow therapy systems

Growing community of inventors

Auckland, New Zealand

Charles Grady Cantrell