US 12,403,278 B2
Apparatus and method for providing gases to a user
Christopher Earl Nightingale, Auckland (NZ); and Donald Roy Kuriger, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed on May 10, 2023, as Appl. No. 18/315,437.
Application 18/315,437 is a continuation of application No. 16/289,262, filed on Feb. 28, 2019, granted, now 11,684,734.
Application 16/289,262 is a continuation of application No. 13/814,922, granted, now 10,258,754, issued on Apr. 16, 2019, previously published as PCT/IB2011/002325, filed on Aug. 12, 2011.
Claims priority of provisional application 61/373,361, filed on Aug. 13, 2010.
Prior Publication US 2023/0390512 A1, Dec. 7, 2023
Int. Cl. A61M 16/00 (2006.01); A61B 5/00 (2006.01); A61M 16/06 (2006.01); A61M 16/10 (2006.01); A61M 16/16 (2006.01)
CPC A61M 16/0066 (2013.01) [A61B 5/4809 (2013.01); A61M 16/0069 (2014.02); A61M 16/06 (2013.01); A61M 16/109 (2014.02); A61M 16/16 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/0039 (2013.01); A61M 2205/3653 (2013.01); A61M 2205/502 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A respiratory therapy device comprising:
a flow generator generating a flow of gas for delivery to a patient,
at least one sensor for measuring properties of the flow of gas,
a controller operatively connected to the flow generator and connected to the at least one sensor, the controller configured to cause the device to operate in:
a flow control mode wherein the flow generator outputs the flow of gas at a substantially steady flow rate, or
a pressure control mode wherein the flow generator outputs the flow of gas at a substantially steady pressure,
wherein, when in the flow control mode, the controller is configured to analyze input from the at least one sensor and determine a flow rate value, and further configured to control the flow generator based on the determined flow rate value and a desired flow rate, and
wherein, when in the flow control mode, the controller is configured to analyze input from the at least one sensor and derive an assessed pressure value, and wherein, in response to the assessed pressure value being above a pressure threshold, the controller is further configured to cause the device to switch from the flow control mode to the pressure control mode.