Dry powder drug delivery system
First Claim
Patent Images
1. A dry powder inhaler comprising:
- a flow path through a container within the dry powder inhaler, wherein said flow path generates a resistance to flow of the dry powder inhaler which is relatively constant across a pressure differential range of between 0.5 kPa and 7 kPa and said resistance to flow in a dosing configuration ranges in value from about 0.065 to about 0.200 (√
kPa)/liter/min;
wherein the container comprises a cartridge comprising a lid and a cup in a dosing configuration and includes a dry powder formulation comprising a diketopiperazine, and wherein after a single inhalation the diketopiperazine in a subject'"'"'s plasma has an AUC0-∞
greater than 2,300 ng*min/mL but less than or about 5,500 ng*min/mL per mg of the diketopiperazine content in the dry powder formulation.
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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, peptides and proteins such as insulin and glucagon-like peptide 1 for the treatment of endocrine disease, for example, diabetes and/or obesity.
1068 Citations
19 Claims
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1. A dry powder inhaler comprising:
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a flow path through a container within the dry powder inhaler, wherein said flow path generates a resistance to flow of the dry powder inhaler which is relatively constant across a pressure differential range of between 0.5 kPa and 7 kPa and said resistance to flow in a dosing configuration ranges in value from about 0.065 to about 0.200 (√
kPa)/liter/min;wherein the container comprises a cartridge comprising a lid and a cup in a dosing configuration and includes a dry powder formulation comprising a diketopiperazine, and wherein after a single inhalation the diketopiperazine in a subject'"'"'s plasma has an AUC0-∞
greater than 2,300 ng*min/mL but less than or about 5,500 ng*min/mL per mg of the diketopiperazine content in the dry powder formulation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 17, 18, 19)
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9. A dry powder inhaler comprising:
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a flow path through a container comprising a cartridge comprising a lid and a cup in a dosing configuration and within the dry powder inhaler wherein said flow path generates a resistance to flow of the dry powder inhaler which is relatively constant across a pressure differential range of between 0.5 kPa and 7 kPa and said resistance to flow in a dosing configuration ranges in value from about 0.065 to about 0.200 (√
kPa)/liter/min,wherein the container includes a dry powder formulation comprising a diketopiperazine and wherein the inhaler is operably configured to emit a powder plume comprising the diketopiperazine having a volumetric median geometric diameter from 2 μ
m to 8 μ
m, andwherein the flow path through the container consists of 20% to 70% of the total airflow through the inhaler. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification