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Medication cassette for an automatic aerosol medication delivery

  • US 5,497,764 A
  • Filed: 03/09/1995
  • Issued: 03/12/1996
  • Est. Priority Date: 03/05/1991
  • Status: Expired due to Term
First Claim
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1. A system for treating a patient with aerosolized medication. comprising:

  • a hand-held device for delivering aerosolized medication comprising a body member with a receiving chamber;

    a cassette, insertable into the receiving chamber of the hand-held device, the cassette comprising;

    a canister having a body containing an aerosol medication and a valve stem movable in a longitudinal first axis relative to the canister body to release an amount of aerosol from the valve of the canister;

    a mouthpiece having a first opening from which a patient can receive aerosolized medication, a second opening from which aerosolized medication released from the valve of the canister is received, a mouthpiece air flow path between the first and second openings, and a valve stem receptacle for receiving and securely seating the valve stem, the valve stem receptacle being located at the second opening;

    a cassette housing having a cavity for receiving the canister, the cassette housing having a first opening connected to the second opening of the mouth piece, the cassette housing having a second opening, and a cassette housing air flow path between the first and second openings of the cassette housing, the cassette housing enclosing at least a portion of-the canister and having an outer configuration specifically designed for insertion into the receiving chamber of the hand-held device;

    wherein the canister can reciprocate in the first axis relative to the cassette housing to release a dose of medication, and the mouthpiece air flow path and cassette housing flow paths are in open communication;

    further wherein the cassette housing has an outer configuration which comprises a protrusion for use in aligning the cassette for insertion into the receiving chamber of the device and for retaining the cassette in the receiving chamber of the device.

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