US 9,808,588 B1
Oscillating positive respiratory pressure device
Adam Meyer, London (CA); and Dan Engelbreth, London (CA)
Assigned to TRUDELL MEDICAL INTERNATIONAL, London, Ontario (CA)
Filed by Trudell Medical International, London, ON OT (CA)
Filed on Mar. 8, 2017, as Appl. No. 15/453,767.
Application 15/453,767 is a continuation of application No. 13/966,759, filed on Aug. 14, 2013, granted, now 9,636,473.
Application 13/966,759 is a continuation of application No. 12/472,215, filed on May 26, 2009, granted, now 8,539,951, issued on Sep. 24, 2013.
Claims priority of provisional application 61/056,358, filed on May 27, 2008.
Int. Cl. A61M 16/00 (2006.01); A61M 16/20 (2006.01); A61M 16/14 (2006.01)
CPC A61M 16/0006 (2014.02) [A61M 16/0066 (2013.01); A61M 16/14 (2013.01); A61M 16/208 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A respiratory treatment device comprising:
an inlet configured to receive exhaled air into the device;
an outlet configured to permit air to exit the device;
an opening positioned in an exhalation flow path defined between the inlet and the outlet;
a blocking segment configured to rotate relative to the opening between a closed position where the flow of air through the opening is restricted, and an open position where the flow of air through the opening is less restricted; and,
a vane configured to rotate the blocking segment between the closed position and the open position in response to the flow of air through the opening;
wherein a size of a blocking surface of the blocking segment is equal to or greater than a size of the opening.