Low-Flow Nicotine Powder Inhaler for Smoking-Regime Dosing
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Solution Overview
Problem
Existing dry powder inhalers (DPIs) require high inhalation rates of 40-120 liters/min to deliver pharmaceutical powders deep into the lungs, leading to incomplete de-aggregation and deposition in upper airways, and are unsuitable for delivering nicotine powder at conventional smoking regime inhalation rates.
Innovation Solution
A nicotine powder inhaler with a simple airflow path and low inhalation rates (≤5 L/min) that uses carrier-free nicotine powder, allowing delivery of a metered dose of nicotine and optional active ingredients, mimicking conventional smoking inhalation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high inhalation rates (40-120 L/min) are used to deliver pharmaceutical powder deep into lungs, then particle dispersion is improved, but device complexity and user adaptability worsen due to incompatibility with conventional smoking inhalation patterns
Solution Approach 1:
The patent changes the critical parameter of inhalation rate from high (40-120 L/min) to low (5-30 mL/stroke), making the device compatible with conventional smoking inhalation patterns while achieving effective nicotine delivery to the lungs
2Manufacturing precision
If high inhalation rates are required for complete powder disaggregation, then API delivery to lungs is improved, but ease of operation worsens due to difficult breathing requirements
Solution Approach 1:
The patent changes the inhalation rate parameter from high to low, allowing users with compromised breathing to operate the device easily while still achieving complete powder disaggregation and effective API delivery through the optimized low-flow aerosolization mechanism
3Ease of operation
If carrier particles are used to deliver API, then powder flow is improved, but manufacturing precision worsens due to incomplete de-aggregation and API deposition in upper airways
Solution Approach 1:
The patent extracts and removes the carrier particles from the formulation, using pure nicotine powder without lactose or other carriers, which eliminates the de-aggregation problem and ensures precise API delivery to the lungs at low inhalation rates
Solution Approach 2:
The patent uses homogeneous pure nicotine powder without carrier particles, ensuring uniform composition and complete disaggregation at low inhalation rates, which improves API delivery precision to the lungs
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Delivers nicotine powder effectively at low inhalation rates, ensuring deep lung penetration and predictable dosing, suitable for users with impaired breathing, with a simplified configuration and optional simultaneous delivery of second active ingredients.
Implementation Method 1
DPI's rely on the force of the patients' inhalation to entrain the powder from the device
Data Source
AI summary
This disclosure relates to nicotine powder inhalers where the nicotine powder is delivered at air flow rates that mimic a smoking regime.