Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1991-05-20
1994-07-12
Burr, Edgar S.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
12820315, 12820321, A61M 1500
Patent
active
053278836
ABSTRACT:
An apparatus for aerosolizing a dose of powdered medicine for inhalation, comprising in combination a solid core defining a diskshaped aerosolizing chamber, the chamber defined by spaced-apart, flat front and rear walls terminated by a circumferential wall, the core including a first end piece having formed therein a hollow mouth
ose piece at the front thereof, an impeller non-concentrically disposed in the chamber mounted on a shaft for high-speed powered rotation about a fixed axis, a plunger for instantaneously introducing a full dose of powdered medicine into the aerosolizing chamber so that all particles thereof are available for intermixing disaggregation and comminution, an aperture for receiving a first stream of air interior the core and passing it towards the mouthpiece for inhalation by the user, and, a wall having formed therein at least one aperture for diverting a portion of the first stream into a second stream of air for sweeping through the aerosolizing chamber to mix with the particles to form a fine, low-density, low-velocity, dry mist of powdered medicine for inhalation by the user.
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Mecikalski Mark B.
Thueson David O.
Williams David R.
Burr Edgar S.
Dura Pharmaceuticals, Inc.
Lewis Aaron J.
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