Dry powder drug delivery system and methods
First Claim
Patent Images
1. A dry powder inhaler comprising:
- a) a mouthpiece;
b) a housing comprising a cartridge-mounting area and a cartridge, the cartridge comprising a movable container having a dry powder, the container configured to move with respect to the cartridge and the cartridge configured to form a flow path between one or more inlet ports and one or more dispensing ports within the housing; and
c) at least one rigid air conduit;
wherein the rigid air conduit is configured so that the dry powder inhaler emits greater than about 75% of the dry powder from the container oriented in the container housing as powder particles in a single inhalation, and the powder particles emitted have a volumetric median geometric diameter of less than about 5 microns when the single inhalation through the mouthpiece generates a peak inspiratory pressure of about 2 kPa within two seconds.
7 Assignments
0 Petitions
Accused Products
Abstract
A pulmonary drug delivery system is disclosed, including a breath-powered, dry powder inhaler, and a cartridge for delivering a dry powder formulation. The inhaler and cartridge can be provided with a drug delivery formulation comprising, for example, a diketopiperazine and an active ingredient, including, small organic molecules, peptides and proteins, including, insulin and glucagon-like peptide 1 for the treatment of disease and disorders, for example, endocrine disease such as diabetes and/or obesity.
512 Citations
21 Claims
-
1. A dry powder inhaler comprising:
-
a) a mouthpiece; b) a housing comprising a cartridge-mounting area and a cartridge, the cartridge comprising a movable container having a dry powder, the container configured to move with respect to the cartridge and the cartridge configured to form a flow path between one or more inlet ports and one or more dispensing ports within the housing; and c) at least one rigid air conduit; wherein the rigid air conduit is configured so that the dry powder inhaler emits greater than about 75% of the dry powder from the container oriented in the container housing as powder particles in a single inhalation, and the powder particles emitted have a volumetric median geometric diameter of less than about 5 microns when the single inhalation through the mouthpiece generates a peak inspiratory pressure of about 2 kPa within two seconds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method of delivering of a dry powder using a high resistance dry powder inhaler comprising:
-
providing a dry powder inhaler with an airflow resistance value ranging from about 0.065 (√
kPa)/liter per minute to about 0.200 (√
kPa)/liter per minute, and containing the dose of the dry powder within cartridge comprising a container configured to move with respect to the cartridge to form a flow path for the delivery of the dry powder;applying sufficient force to reach a peak inspiratory pressure of at least 2 kPa within 2 seconds; and generating an area under the curve in the first second (AUC0-1 sec) of a inspiratory pressure versus time curve of at least about 1.0, 1.1 or 1.2 kPa*sec; wherein greater than 75% of the dose of the dry powder is discharged or emitted from the inhaler as powder particles. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
-
Specification