Abstract: An inhalation device for dispensing a powdered medicament from a medicament-holding container having a first part which is an elongate housing having a passageway for the movement of air therethrough, one end of the housing being an output end adapted for insertion into the mouth or nasal passage of the user thereof, the passageway terminating in an emptying chamber at the output end of the housing, the cross-sectional area of the passageway being less than the cross-sectional area of the emptying chamber, and means for receiving the second part of the device which is a carriage moveably connected to the first part and having means to receive a medicament-holding container so that when an open end of the medicament-holding container is placed adjcent the inner end of the emptying chamber during inhalation the medicament is dispensed from the container.

Abstract: A breath-actuated inhalation device for dispensing a powdered medicament from a powdered medicament-holding capsule, comprising an elongate housing having a passageway for the movement of air therethrough, one end of the housing being an output end adapted for insertion into a user's mouth or nasal passage, the passageway having an inlet end terminating in an emptying chamber at the output end of said housing, the cross-sectional area of the passageway being less than the cross-sectional area of the emptying chamber, and means associated with said housing for receiving a powdered medicament-holding capsule. A collar surrounds at least a portion of the periphery of the housing adjacent the emptying chamber and has at least one substantially flat surface with a notch therein, which allows a first, smaller part of a two-part capsule to fit therein but which is too small to allow the second, larger part of the capsule to fit therein.

Abstract: An inhalation device having an elongate housing having a passageway for the movement of air therethrough. The passageway terminates in an emptying chamber adjacent that end of the housing which is adapted for insertion into the mouth or nasal passages of a user thereof. The housing has means for receiving and opening a container holding a unit dose of powdered medicament for administration. The opening means includes first means for placing the interior of the opened capsule in communication with the atmosphere and second means for placing the interior of the opened capsule in communication with the emptying chamber via the passageway in the housing. During inhalation, air drawn through the first means causes the powdered medicament to be expelled from the container through the second means, the passageway and the emptying chamber into the nose, throat or lungs of the user where beneficial or therapeutic action of the medicament occurs.

Abstract: A breath actuated inhalation device having a housing having a passageway for the passage of air therethrough. The passageway, of relatively small diameter, opens into an emptying chamber, of relatively greater diameter, adjacent that end of the housing which is adapted for insertion into the mouth or nose of the user. Adjacent that end of the emptying chamber closest to the passageway, the device has means for receiving and opening a unit dose of powdered medicament for administration. During inhalation, a portion of the air stream passing through the passageway into the emptying chamber is deflected by a beveled deflector causing sufficient air flow to come into contact with the powdered medicament whereby the powdered medicament is entrained in the air stream being inhaled, and is carried into the nose, throat or lungs of the user where beneficial or therapeutic action of the medicament occurs.

Abstract: An inhalation device having an elongate housing having a passageway for the movement of air therethrough. The passageway terminates in an emptying chamber adjacent that end of the housing which is adapted for insertion into the mouth or nasal passages of a user thereof. The housing has means for receiving and opening a container holding a unit dose of powdered medicament for administration. The opening means includes first means for placing the interior of the opened capsule in communication with the atomosphere and second means for placing the interior of the opened capsule in communication with the emptying chamber via the passageway in the housing. During inhalation, air drawn through the first means causes the powdered medicament to be expelled from the container through the second means, the passageway and the emptying chamber into the nose, throat or lungs of the user where beneficial or therapeutic action of the medicament occurs.

Abstract: An inhalation device having an elongate housing having one or more passageways for the passage of air therethrough. Each passageway, of relatively small diameter, opens into an emptying chamber, of relatively greater diameter, adjacent that end of the housing which is adapted for insertion into the mouth or nose of a user. Adjacent that end of the emptying chamber closest to the passageway(s), the housing has means for receiving or presenting a unit dose of powdered medicament for administration. Means are provided to open the medicament holder as it is being inserted into, or after it has been inserted into, the means for receiving or presenting a unit dose of powdered medicament for administration. During inhalation, the air stream passing over and directed into the powdered medicament holder entrains the powdered medicament which is then carried into the nose, throat or lungs of the user where beneficial or therapeutic action of the medicament occurs.

Abstract: An inhalation device having an elongate housing having a passageway for the passage of air therethrough. The passageway, of relatively small diameter, opens into an emptying chamber, of relatively greater diameter, adjacent that end of the housing which is adapted for insertion into the mouth or nose of the user. Adjacent that end of the emptying chamber closest to the passageway, the housing has means for receiving or presenting a unit dose of powdered medicament for administration. During inhalation, a portion of the air stream passing through the passageway into the emptying chamber is deflected by a beveled deflector causing sufficient air flow to come into contact with the powdered medicament whereby the powdered medicament is entrained in the air stream being inhaled, and is carried into the nose, throat or lungs of the user where beneficial or therapeutic action of the medicament occurs.

Abstract: An inhalation device having an elongate housing having an emptying chamber adjacent that end of housing which is adapted for insertion into the mouth or nose of a user. A plurality of passageways extending essentially perpendicular to the longitudinal axis of the housing intersect with the inner end of the emptying chamber. Adjacent that end of the emptying chamber closest to the passageways, the housing has means for receiving or presenting a unit dose of powdered medicament for administration. During inhalation, the powdered medicament is entrained in the air stream being inhaled and is carried into the nose, throat or lungs of the user where beneficial or therapeutic action of the medicament occurs.

Abstract: An inhalation device having an elongate housing having one or more passageways for the passage of air therethrough. The passageway, of relatively small diameter, opens into an emptying chamber, of relatively greater diameter, adjacent that end of the housing which is adapted for insertion into the mouth or nose of a user. Adjacent that end of the emptying chamber closest to the passageway(s), the housing has means to hold a medicament-holding container so it is tilted toward the passageway (i.e., away from the output end of the housing). During inhalation, the powdered medicament in the container is entrained in the air stream being inhaled and is carried into the nose, throat, or lungs of the user where beneficial or therapeutic action of the medicament occurs.

Abstract: An inhalation device having an elongate housing having one or more passageways for the passage of air therethrough. Each passageway, of relatively small diameter, opens into an emptying chamber, of relatively greater diameter, adjacent that end of the housing which is adapted for insertion into the mouth or nose of a user. Adjacent that end of the emptying chamber closest to the passageway(s), the housing has means for receiving or presenting a unit dose of powdered medicament for administration. During inhalation, the air stream passing over and directed into the powdered medicament holder entrains the powdered medicament which is then carried into the nose, throat or lungs of the user where beneficial or therapeutic action of the medicament occurs.