Dry powder inhaler
First Claim
Patent Images
1. An inhaler comprising:
- a housing;
a cover plate pivotably attached to a lid on the housing;
a lever pivotably attached to the cover plate, the lever having an actuator end and a blister end;
a blister pack disk rotatably mounted on the housing, under the cover plate;
a powder duct in the housing under the blister end of the lever; and
an actuator extending through the housing and aligned with the actuator end of the lever.
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Accused Products
Abstract
A drug powder inhaler has a cover plate pivotably attached to a lid on an inhaler housing. A lever is pivotably attached to the cover plate. A blister pack disk is rotatably mounted on the housing under the cover plate. A powder duct in the housing extends from a staging chamber underneath one end of the lever to an aerosolizing chamber. An actuator in the housing is pressed to shear open a blister on the blister pack disk and thereby deliver the drug dose contents of the blister into the staging chamber. A switch senses pressure in the mouthpiece and switches on a motor spinning an impeller within the aerosolizing chamber, when inhalation is detected.
249 Citations
19 Claims
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1. An inhaler comprising:
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a housing; a cover plate pivotably attached to a lid on the housing; a lever pivotably attached to the cover plate, the lever having an actuator end and a blister end; a blister pack disk rotatably mounted on the housing, under the cover plate; a powder duct in the housing under the blister end of the lever; and an actuator extending through the housing and aligned with the actuator end of the lever. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of powder inhalation by a patient comprising the steps of:
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placing a disk having blisters containing a powder on an inhaler; opening a blister and releasing powder from the blister into a staging chamber in the inhaler; sensing inhalation by the patient; spinning up an impeller in a mixing chamber in the inhaler in response to the sensed inhalation; and drawing air and the powder from the staging chamber into the mixing chamber, after the impeller is already spinning. - View Dependent Claims (17)
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18. A method of delivering a powder medicament for inhalation by a patient comprising the steps of:
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providing a dry powder inhaler, providing a plurality of blisters on a carrier on the dry powder inhaler; pivoting a tab under the blister from a first tab position to a second tab position to shear the blister open; pivoting a lever on the inhaler from a first lever position to a second lever position, to crush the blister; moving the tab back to the first position; and advancing the carrier to open a subsequent blister.
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19. A dry powder inhaler comprising:
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a housing having a top surface; at least one rachet post on the top surface; a cover attached to the housing; an arm pivotably attached to the housing, the arm having a fixed end and a free end; a tab extending from the free end of the arm toward the top surface of the housing; and a lifter on the cover, for raising and lowering the free end of the arm as the arm pivots about the housing.
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Specification