US 12,390,607 B2
Pressure sensor evaluation for respiratory apparatus
Joel Cappelli, Sydney (AU); Cem Tarakci, Sydney (AU); and Barton John Kenyon, Sydney (AU)
Assigned to ResMed Pty Ltd, (AU)
Filed by ResMed Pty Ltd, Bella Vista (AU)
Filed on Jul. 12, 2023, as Appl. No. 18/350,955.
Application 18/350,955 is a continuation of application No. 16/735,860, filed on Jan. 7, 2020, granted, now 11,730,905.
Application 16/735,860 is a continuation of application No. 14/411,769, granted, now 10,569,035, issued on Feb. 25, 2020, previously published as PCT/AU2013/000695, filed on Jun. 27, 2013.
Claims priority of provisional application 61/666,367, filed on Jun. 29, 2012.
Prior Publication US 2023/0347083 A1, Nov. 2, 2023
Int. Cl. A61M 16/00 (2006.01); G01L 27/00 (2006.01)
CPC A61M 16/0003 (2014.02) [A61M 16/0051 (2013.01); A61M 16/0069 (2014.02); A61M 16/026 (2017.08); G01L 27/007 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/003 (2013.01); A61M 2205/18 (2013.01); A61M 2205/3365 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/502 (2013.01); A61M 2205/70 (2013.01)] 52 Claims
OG exemplary drawing
 
1. A respiratory apparatus configured to provide a respiratory treatment, the respiratory apparatus comprising:
a flow generator having a blower to generate a flow of breathable gas for a patient interface at a pressure above atmospheric pressure;
a pressure sensor configured to measure the pressure;
a controller coupled to the pressure sensor and the flow generator, the controller configured to control a delivery of respiratory treatment from the flow generator in a first mode according to a pressure control loop with a signal from the pressure sensor;
the controller further configured to:
test accuracy of the pressure sensor;
upon detection that the pressure sensor is inaccurate, change control of the delivery of the respiratory treatment with the flow generator from the first mode to an operational safe mode; and
thereafter control delivery of respiratory treatment according to the operational safe mode, wherein the operational safe mode comprises a pressure controlled mode using the pressure sensor detected to be inaccurate.