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Dry powder inhaler with flutter dispersion member

  • US 9,492,625 B2
  • Filed: 11/12/2010
  • Issued: 11/15/2016
  • Est. Priority Date: 11/12/2009
  • Status: Active Grant
First Claim
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1. A dry powder inhaler for delivering medicament to a patient, the dry powder inhaler comprising:

  • a housing defining a chamber for receiving a dose of powdered medicament;

    an inhalation port in fluid communication with the chamber;

    an airflow inlet at a distal end of the chamber providing fluid communication between the chamber and an exterior of the housing;

    an elastic planar flutter element in the chamber, the elastic planar flutter element having substantially planar outer surfaces, a tensioned distal end held substantially taut across the chamber proximate to the airflow inlet, and a free proximal end opposite to the distal end and downstream of the airflow inlet; and

    a dose of powdered medicament coated onto and tightly bound to at least a portion if at least one of the substantially planar outer surfaces of the elastic planar flutter element,wherein an airflow through the chamber induces vibrations in the elastic planar flutter element sufficient to detach the dose of powdered medicament from the at least one of the substantially planar outer surfaces and aerosolize the dose of powdered medicament into the airflow.

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