Inhaler Swirl End Plug for Nicotine Capsule Rotation
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Solution Overview
Problem
Dry powder inhalers are not suitable for delivering nicotine particles to the lungs at conventional smoking inhalation or air flow rates, are complex to operate, and often require moving parts, making them difficult to manufacture and use.
Innovation Solution
An inhaler article with a body extending from a mouthpiece end to a distal end, featuring a capsule cavity, a mouthpiece air channel, and an end cap with a non-parallel air channel that induces swirling airflow, allowing a capsule to rotate and release nicotine particles, mimicking conventional cigarette airflow and design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dry powder inhalers are designed to deliver nicotine particles to the lungs, then nicotine delivery is achieved, but the device becomes complex to operate and requires moving parts
Solution Approach 1:
The invention extracts the capsule from a complex mechanical delivery system and places it in a simple stationary cavity. The capsule is pierced by a fixed piercing element rather than being manipulated by moving parts. This extraction of the capsule into a simplified static structure resolves the contradiction between reliable nicotine delivery and device complexity.
Solution Approach 2:
The device is segmented into distinct functional zones: a mouthpiece air channel for inhalation, a capsule cavity for holding the capsule, and a piercing element for capsule penetration. This segmentation allows each component to perform its function independently without requiring complex coordination between moving parts, thereby reducing overall device complexity while maintaining nicotine delivery reliability.
2Quantity of substance
If dry powder inhalers are designed to deliver entire dry powder dose in a single breath, then complete dose delivery is achieved, but the inhalation rate must be high which is not within conventional smoking regime
Solution Approach 1:
The invention enables periodic action by allowing multiple inhalations to be taken from a single pierced capsule. Instead of requiring one high-speed inhalation to deliver the entire dose, the user can take multiple conventional-speed inhalations, each delivering a portion of the nicotine particles from the same capsule reservoir, thereby matching conventional smoking regimes.
Solution Approach 2:
The capsule is pierced in advance before inhalation begins, creating a reservoir of accessible nicotine particles. This preliminary piercing action prepares the capsule for multiple subsequent inhalations at conventional rates, eliminating the need for high-speed single-breath inhalation while still achieving complete dose delivery over time.
3Ease of operation
If the air channel is non-parallel with the longitudinal axis, then swirling airflow is induced to rotate the capsule, but the manufacturing precision requirements increase
Solution Approach 1:
The air channel is designed with a curved or arcuate path rather than a straight non-parallel configuration. This curvature naturally induces swirling airflow as air passes through, rotating the capsule effectively. The curved geometry is easier to manufacture with standard precision than a precisely angled straight channel, as it tolerates minor manufacturing variations while still achieving the desired swirl effect.
Solution Approach 2:
The non-parallel air channel creates asymmetric airflow patterns within the capsule cavity, generating the swirl necessary for capsule rotation. This asymmetric design is intentionally incorporated into the mouthpiece body structure, and while it requires precision, the curvature approach reduces sensitivity to manufacturing tolerances compared to sharp angular deviations.
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
The inhaler delivers nicotine particles to the lungs at conventional smoking inhalation or air flow rates, is simple to manufacture and use, and provides a convenient, cigarette-like experience by rotating the capsule to aerosolize nicotine particles effectively.
Implementation Method 1
The one or more airflow channels through the end cap may initiate 'swirling' air flow though the capsule cavity. The swirling air flow may cause a capsule contained within the capsule cavity to rotate and release nicotine particles (once pierced) into the airflow through the inhaler article.
Implementation Method 2
A porous support element may separate the capsule cavity from the mouthpiece end. The porous support element may be a filter element. Airflow from the capsule cavity may flow through the porous support element to the mouthpiece end.
Data Source
AI summary
An inhaler article includes a body extending along a longitudinal axis from a mouthpiece end to a distal end and a capsule cavity defined within the body. A mouthpiece air channel extends from the capsule cavity to the mouthpiece end. An end cap is disposed within the distal end and extends to the capsule cavity. The end cap extends from an end cap distal end to an end cap inner end. The end cap includes an air channel extending from the end cap distal end to the end cap inner end. The air channel is non-parallel with the longitudinal axis.