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Oscillating positive respiratory pressure device

  • US 10,668,235 B2
  • Filed: 01/25/2017
  • Issued: 06/02/2020
  • Est. Priority Date: 05/27/2008
  • Status: Active Grant
First Claim
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1. A respiratory treatment device comprising:

  • an inlet configured to receive exhaled air into the device;

    an outlet configured to permit exhaled air to exit the device;

    an opening positioned along a flow path defined between the inlet and the outlet;

    and,a blocking segment configured to move relative to the opening in response to a flow of air along the flow path between a closed position, where the flow of air through the opening is restricted, and an open position, where the flow of air path through the opening is less restricted;

    wherein there is an absence of a force biasing the blocking segment toward the closed position during a period when air is not flowing along the flow path; and

    ,wherein a size of a blocking surface of the blocking segment is equal to or greater than a size of the opening.

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