Dosage inhalator providing optimized compound inhalation trajectory
First Claim
1. 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.
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Accused Products
Abstract
A breath actuated dry powder medicament inhalator has a primary air passageway therethrough defining a venturi in the medial portion thereof. A secondary air passageway is provided which includes a compound deaggregating swirl chamber and is fluidly connected to the venturi of the primary air passageway. A dry powder compound storage chamber and cooperatively associated metering plate act to introduce a predetermined amount of compound into the swirl chamber upon actuation of the metering plate. The primary air passageway is configured within the inhalator apparatus so as to create an optimized air flow trajectory through the mouth of the user to minimize dry powder compound impingement upon the outside radius of the throat.
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Citations
14 Claims
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1. A portable apparatus for the inhalation of a predetermined amount of a dry powder compound as an aerosol effluent, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A portable apparatus for the inhalation of a predetermined amount of a dry powder compound as an aerosol effluent, comprising:
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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. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification