Aerosol medication delivery system
First Claim
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1. An aerosol inhalation apparatus for delivering a medicament containing mist to a patient comprising:
- (a) a housing having interconnecting first and second chambers and a wall having an opening therein, said wall being disposed intermediate said first and second chambers;
(b) containerized medication means removably connected to said housing for introducing into said first chamber of said housing a particulate-laden spray having large and small particles of medicament;
(c) inhalation means connected to said housing for communication with said second chamber for permitting a patient to inhale particulate-laden spray residing within said housing and to exhale a portion thereof into said second chamber; and
(d) flow control means carried by said housing for controlling passage of particulate-laden spray between said first and second chambers during patient inhalation and exhalation, said flow control means comprising a valve member pivotally movably relative to said opening in said wall.
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Abstract
An apparatus for use in conjunction with a multi-dose inhaler which includes a novel valving mechanism and an expansion chamber which permits medication to be delivered to the patient without the need for precise timing of canister actuation. The apparatus also includes a filter unit for filtering the patient'"'"'s exhaled breath and a unique baffling arrangement which functions to decrease average aerosol particle size for better targeting of the desired lung area. In one form of the invention a preset, breath-activated control mechanism is provided which aids in the prevention of both over and under dosing of patient.
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Citations
17 Claims
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1. An aerosol inhalation apparatus for delivering a medicament containing mist to a patient comprising:
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(a) a housing having interconnecting first and second chambers and a wall having an opening therein, said wall being disposed intermediate said first and second chambers; (b) containerized medication means removably connected to said housing for introducing into said first chamber of said housing a particulate-laden spray having large and small particles of medicament; (c) inhalation means connected to said housing for communication with said second chamber for permitting a patient to inhale particulate-laden spray residing within said housing and to exhale a portion thereof into said second chamber; and (d) flow control means carried by said housing for controlling passage of particulate-laden spray between said first and second chambers during patient inhalation and exhalation, said flow control means comprising a valve member pivotally movably relative to said opening in said wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An aerosol inhalation apparatus for delivering a medicament containing mist to a patient comprising:
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(a) a housing having interconnecting first and second chambers, said first chamber having a port in communication with atmosphere, and said second chamber having an outlet port in communication with atmosphere, said housing further including a wall having an opening therein, said wall being disposed intermediate said first and second chambers; (b) containerized medication means a multi-dose inhaler removably connected to said housing for introducing into said first chamber of said housing a particulate-laden spray having large and small particles of medicament; (c) inhalation means connected to said housing for communication with said second chamber for permitting a patient to inhale particulate-laden spray residing within said housing and to exhale a portion thereof into said second chamber; and (d) flow control means carried by said housing for controlling passage of particulate-laden spray between said first and second chambers during patient inhalation and exhalation, said flow control means comprising a valve member pivotally movable about a single pivot point relative to said opening in said wall; (e) baffle means disposed intermediate said first and second chambers for impeding the flow of particles toward said second chamber; and (f) filtering means connected to said outlet port for filtering particulates from the particulate-laden mist flowing through said outlet port. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification