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Oscillating positive expiratory pressure device

  • US 10,589,043 B2
  • Filed: 11/02/2016
  • Issued: 03/17/2020
  • Est. Priority Date: 11/30/2012
  • 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 air to exit the device;

    an opening positioned in an exhalation flow defined between the inlet and the outlet;

    a restrictor member 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 restrictor member between the closed position and the open position in response to the flow of air between the inlet and the outlet;

    wherein the restrictor member and the vane have a combined center of gravity positioned to bias the restrictor member to the closed position during a period of no air flow through the opening.

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