Dosage inhalator providing optimized compound inhalation trajectory

Claim 2

A portable apparatus for the inhalation of a predetermined amount of a dry powder compound as an aerosol effluent, comprising: an elongate housing defining a primary air passageway therethrough comprising a generally inclined air inlet portion having a first end and a second end, said first end of said inclined portion adapted to introduce air flow into said elongate housing at an angle between about 5°-45° below a horizontal baseline and an air exit portion at said second end of said inclined portion for insertion into the mouth, said primary air passageway further comprising a venturi position substantially in the medial portion thereof between said air inlet portion and said air exit portion; a storage chamber formed in said housing for storing said compound to be inhaled; a secondary air passageway in said housing comprising an air introduction portion having a first end and a second end, said first end of said introduction portion adjacent said air inlet portion of said primary air passageway and said second end of said introduction portion fluidly communicating with said venturi portion of said primary air passageway, said secondary air passageway further comprising an enlarged compound swirl chamber between said air introduction portion and said other end thereof; and dose introduction means provided within said housing for transporting a predetermined portion of said compound from said storage chamber to said compound swirl chamber of said secondary air passageway; whereby during inhalation the pressure differential between said venturi portion of said primary air passageway and said swirl chamber of said secondary air passageway serves to swirl the compound out of said swirl chamber and into said primary air passageway, and whereby the air flow pathway through said apparatus serves to introduce the compound along an optimized arcuate trajectory to the pharynx and larynx.

Claim 3

A portable apparatus according to claim 1 wherein said air inlet portion comprises means for introducing air flow into said elongate housing at an angle of about 15° below a horizontal baseline.

Claim 4

A portable apparatus according to claim 1 wherein said elongate housing has an inlet end and an outlet end, said air inlet portion is positioned vertically lower at said inlet end of said elongate housing with respect to said horizontal baseline than said air exit portion at said outlet end of said elongate housing.

Claim 5

A portable apparatus according to claim 1 wherein said storage chamber is provided with a spring biased plate element to urge a compound therein toward said dose introduction means.

Claim 6

A portable apparatus according to claim 1 wherein said air introduction portion of said secondary air passageway is in fluid communication with and extends generally above and lengthwise relative to said air inlet portion of said primary air passageway in said elongate housing.

Claim 7

A portable apparatus according to claim 5 wherein said swirl chamber of said secondary air passageway is positioned generally above said venturi portion of said primary air passageway and defines a generally cylindrically-shaped chamber.

Claim 8

A portable apparatus according to claim 1 wherein said dose introduction means comprises a slidable metering plate with a compound-receiving aperture therein adapted to be slidably moved from a normally inoperative position with said aperture beneath said storage chamber to an operative position with said aperture introduced into said swirl chamber of said secondary air passageway.

Claim 9

A portable apparatus according to claim 7 wherein said dose introduction means further comprises an inwardly deflectable actuator button and said slidable metering plate is actuated by said inwardly deflectable actuator button mounted in said elongate housing of said inhalator apparatus.

Claim 10

A portable apparatus for the inhalation of a predetermined amount of a dry powder compound as an aerosol effluent, comprising: an elongate housing defining a primary air passageway therethrough comprising a generally inclined air inlet portion having a first end and a second end, said first end of said inclined portion adapted to introduce air flow into said elongate housing at an angle of about 15° below a horizontal baseline and an air exit portion at the said second end of said inclined portion for insertion into the mouth, said primary air passageway further comprising a venturi position substantially in the medial portion thereof between said air inlet portion and said air exit portion; a storage chamber formed in said housing for storing said compound to be inhaled; a secondary air passageway in said housing comprising an air introduction portion having a first end and a second end, said first end of said introduction portion fluidly communicating with and extending generally above and lengthwise relative to said air inlet portion of said primary air passageway, and said second end of said introduction portion fluidly communicating with said venturi portion of said primary air passageway, said secondary air passageway further comprising an enlarged compound swirl chamber between said air introduction portion and said other end thereof; and dose introduction means provided within said housing for transporting a predetermined portion of said compound from said storage chamber to said compound swirl chamber of said secondary air passageway; whereby during inhalation the pressure differential between said venturi portion of said primary air passageway and said swirl chamber of said secondary air passageway serves to swirl the compound out of said swirl chamber and into said primary air passageway, and whereby the air flow pathway through said apparatus serves to introduce the compound along an optimized arcuate trajectory to the pharynx and larynx.

Claim 11

A portable apparatus for the inhalation of a predetermined amount of a dry powder compound as an aerosol effluent, comprising: an elongate housing defining a primary air passageway therethrough comprising a generally inclined air inlet portion having a first end and a second end, said first end of said inclined portion adapted to introduce air flow into said elongate housing at an angle of about 15° below a horizontal baseline and an air exit portion at the said second end of said inclined portion for insertion into the mouth, said primary air passageway further comprising a venturi position substantially in the medial portion thereof between said air inlet portion and said air exit portion; a storage chamber formed in said housing for storing said compound to be inhaled; a secondary air passageway in said housing comprising an air introduction portion having a first end and a second end, said first end of said introduction portion fluidly communicating with and extending generally above and lengthwise relative to said air inlet portion of said primary air passageway, and said second end of said introduction portion fluidly communicating with said venturi portion of said primary air passageway, said secondary air passageway further comprising an enlarged compound swirl chamber between said air introduction portion and said other end thereof; and dose introduction means provided within said housing for transporting a predetermined portion of said compound from said storage chamber to said compound swirl chamber of said secondary air passageway; whereby during inhalation the pressure differential between said venturi portion of said primary air passageway and said swirl chamber of said secondary air passageway serves to swirl the compound out of said swirl chamber and into said primary air passageway, and whereby the air flow pathway through said apparatus serves to introduce the compound along an optimized arcuate trajectory to the pharynx and larynx.

Claim 12

A portable apparatus according to claim 9 wherein said elongate housing has an inlet end and an outlet end, said air inlet portion is positioned vertically lower at said inlet end of said elongate housing with respect to said horizontal baseline than said air exit portion at said outlet end of said elongate housing.

Claim 13

A portable apparatus according to claim 9 wherein said storage chamber is provided with a spring biased plate element to urge a compound therein toward said dose introduction means.

Claim 14

A portable apparatus according to claim 11 wherein said swirl chamber of said secondary air passageway is positioned generally above said venturi portion of said primary air passageway and defines a generally cylindrically-shaped chamber.

Claim 15

A portable apparatus according to claim 9 wherein said dose introduction means comprises a slidable metering plate with a compound-receiving aperture therein adapted to be slidably moved from a normally inoperative position with said aperture beneath said storage chamber to an operative position with said aperture introduced into said swirl chamber of said secondary air passageway.

Claim 16

A portable apparatus according to claim 13 wherein said dose introduction means further comprises an inwardly deflectable actuator button and said slidable metering plate is actuated by said inwardly deflectable actuator button mounted in said elongate housing of said inhalator apparatus.