Capsule Inhaler Activation for Consistent Airway Powder Delivery
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Solution Overview
Problem
Existing inhalers have poor reliability and repeatability in delivering medicament doses, which is affected by variation in subject inhalation, limiting their use to applications where dosage variation is tolerable.
Innovation Solution
A device with a gas inlet, gas outlet, composition receptacle, and dispersion chamber, featuring primers that pierce a composition capsule upon cap removal, and a vortex chamber to disperse the composition, allowing operation under both positive and negative pressure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional inhalers are used for medicament delivery, then the device structure is simple, but the reliability and repeatability of dose delivery is poor due to variation in subject inhalation
Solution Approach 1:
The patent replaces the traditional mechanical inhaler system that relies on subject inhalation effort with a gas-driven system using positive or negative pressure to deliver the medicament. The gas inlet, gas outlet, and dispersion chamber work together to propel the composition capsule and disperse the medicament without depending on subject inhalation variation, thereby improving reliability while maintaining reasonable device complexity.
Solution Approach 2:
The patent employs pneumatic principles by using gas flow (positive or negative pressure) to drive the medicament delivery process. The gas inlet introduces pressurized gas that moves through the dispersion chamber to propel the composition capsule and carry the dispersed medicament to the subject's airway, eliminating dependence on subject inhalation mechanics and improving dose delivery consistency.
2Adaptability or versatility
If traditional inhalers are used, then the device is simple to operate, but the adaptability to different subjects (conscious or unconscious) is limited
Solution Approach 1:
The patent creates a multi-functional device that can operate in multiple modes: positive pressure mode for unconscious subjects or those unable to inhale effectively, and negative pressure mode for conscious subjects who can inhale. The gas inlet can be connected to various gas sources (compressor, tank, or subject's own exhalation), making the device adaptable to different subject conditions while maintaining a unified structural design that does not significantly complicate operation.
3Manufacturing precision
If a composition capsule is used with primers, then the manufacturing precision and dosing consistency is improved, but the device complexity increases due to additional components
Solution Approach 1:
The patent segments the medicament into pre-filled composition capsules, each containing a precise, pre-measured dose. This segmentation allows for high manufacturing precision in the capsule production process, ensuring consistent dosing. The capsule acts as an independent, pre-dosed unit that simplifies the overall device design, as the dosing function is built into the capsule rather than requiring complex dosing mechanisms in the device.
Solution Approach 2:
The primers perform the piercing action in advance before the actual gas flow and medicament dispersion begin. By pre-piercing the composition capsule with primers activated during cap removal, the system ensures the capsule is ready for immediate gas-driven dispersion without requiring complex real-time control mechanisms, thereby achieving precise dosing with relatively simple device architecture.
4Adaptability or versatility
If the device operates with both positive and negative pressure, then the versatility of administration methods is improved, but the device complexity increases
Solution Approach 1:
The patent employs a dynamic design where the same basic device structure can operate in either positive pressure mode or negative pressure mode depending on the connection configuration. The gas inlet can be connected to a positive pressure source (compressor, tank) or configured for negative pressure operation (subject inhalation, suction device). This dynamic adaptability allows the device to switch between operational modes without requiring fundamentally different hardware, maintaining relative simplicity while achieving versatility.
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 device ensures consistent and flexible delivery of medicaments, suitable for both conscious and unconscious subjects, offering versatility in administration methods.
Implementation Method 1
one or more primers adapted to pierce the composition capsule to release the composition
Implementation Method 2
a vortex chamber to disperse the composition
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
The present invention provides a particulate delivery device with an automatic activation mechanism that pierces or cuts a composition capsule when a cap is removed. The cap cannot be replaced once the device is activated for use. The device allows for gas flow through the device from a gas inlet to a gas outlet through a composition receptacle and dispersion chamber to deliver particulate to the airway of a subject.