US 11,951,252 B2
Oscillating positive expiratory pressure device
Adam Meyer, London (CA); Raphael Kopala, London (CA); Chris Dobson, London (CA); James Schmidt, London (CA); and Neritan Alizoti, London (CA)
Assigned to Trudell Medical International, London (CA)
Filed by Trudell Medical International, London (CA)
Filed on Jan. 28, 2020, as Appl. No. 16/774,930.
Application 16/774,930 is a continuation of application No. 15/341,559, filed on Nov. 2, 2016, granted, now 10,589,043.
Application 15/341,559 is a continuation of application No. 14/092,091, filed on Nov. 27, 2013, granted, now 9,517,315, issued on Dec. 13, 2016.
Claims priority of provisional application 61/781,533, filed on Mar. 14, 2013.
Claims priority of provisional application 61/733,791, filed on Dec. 5, 2012.
Claims priority of provisional application 61/731,861, filed on Nov. 30, 2012.
Prior Publication US 2020/0230335 A1, Jul. 23, 2020
Int. Cl. A61M 16/00 (2006.01); A61M 16/08 (2006.01); A61M 16/20 (2006.01)
CPC A61M 16/0006 (2014.02) [A61M 16/0866 (2014.02); A61M 16/208 (2013.01); A61M 16/20 (2013.01); A61M 16/205 (2014.02); A61M 2205/3365 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A respiratory treatment device comprising:
a housing enclosing at least one chamber;
a chamber outlet configured to permit air in the housing to exit the housing;
a chamber inlet configured to permit air outside the housing to enter the housing;
a flow path defined between the chamber inlet and the chamber outlet;
a restrictor member positioned in the flow path, the restrictor member being configured to move in response to the flow of air along the flow path between a closed position, where a flow of air along the flow path is restricted, and an open position, where the flow of air along the flow path is less restricted; and,
a one-way pressure threshold valve associated with one of the chamber inlet or the chamber outlet, the one-way pressure threshold valve being configured to close one of the chamber inlet or the chamber outlet until a threshold pressure is obtained;
wherein the flow of air along the flow path is prevented while the one-way pressure threshold valve remains closed, and the restrictor member does not move between the closed position and the open position; and,
wherein the flow of air along the flow path is permitted after the one-way pressure threshold valve opens, and the restrictor member moves between the closed position and the open position in response to the flow of air along the flow bath.