Membrane-Encapsulated Adsorbent for Low Breathing Resistance Inhalation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional CO2 adsorbents used in inhalation devices face limitations such as high breathing resistance, variable performance due to non-uniform granule sizes, and risk of inhaling adsorbent particulates, which are not suitable for portable and efficient CO2 reduction in environments causing panic attacks.
Innovation Solution
The use of a membrane-encapsulated adsorbent material in a sheet form within an inhalation device, allowing airflow past the membrane to reduce pressure drop and minimize particulate inhalation, while maintaining high CO2 adsorption efficiency and durability across orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional granular adsorbent material is used in inhalation devices, then CO2 adsorption capacity is achieved, but breathing resistance increases and particulate inhalation risk occurs
Solution Approach 1:
The patent applies this principle by encapsulating the adsorbent material within a thin, flexible membrane that allows gas permeation while containing the particulate adsorbent. The membrane acts as a selective barrier that permits CO2 diffusion to the adsorbent while preventing larger particulates from entering the breathing zone, thus resolving the contradiction between achieving adsorption capacity and avoiding harmful particulate inhalation.
Solution Approach 2:
The patent utilizes porous membrane structures that allow selective gas transport. The porous nature of the membrane enables CO2 molecules to pass through and reach the adsorbent material while the pore size is controlled to block larger particulate matter, thereby maintaining CO2 adsorption efficiency while eliminating the risk of inhaling adsorbent particles.
2Productivity
If smaller adsorbent granules are used to increase surface area for CO2 adsorption, then adsorption efficiency improves, but breathing resistance increases
Solution Approach 1:
The membrane encapsulation creates a thin-film barrier that reduces the diffusion path length for CO2 to reach the adsorbent material. This allows the use of finer adsorbent particles (which provide higher surface area and thus higher adsorption efficiency) without significantly increasing breathing resistance, as the membrane itself presents minimal flow resistance compared to traditional granular bed structures.
3Reliability
If adsorbent material is contained to prevent particulate inhalation, then safety improves, but CO2 adsorption efficiency may decrease
Solution Approach 1:
The thin membrane provides effective particulate containment while maintaining high gas permeability. The membrane's thinness minimizes resistance to CO2 diffusion, ensuring that adsorption capacity is not compromised. Simultaneously, the membrane's integrity prevents particulate escape, thus achieving both safety and adsorption efficiency.
Solution Approach 2:
The porous membrane structure allows size-selective transport where small CO2 molecules can freely diffuse through the pores to reach the adsorbent, while larger particulate matter is physically blocked. This selective permeability ensures that containment does not reduce CO2 adsorption capacity.
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
This solution provides efficient CO2 reduction with minimal breathing resistance, reduced risk of inhaling adsorbent particles, and maintains performance across various orientations and environments, making it suitable for portable use in anxiety and panic disorder management.
Implementation Method 1
The adsorbent may reduce inspired CO2 levels from the elevated level experienced in the current environment
Data Source
AI summary
An adsorbent is described. The adsorbent may include a membrane and an adsorbent material encapsulated within the membrane. An inhalation device is also described. The inhalation device may include a housing and a membrane within the housing. The membrane may encapsulate an adsorbent material. The membrane may be positioned such that airflow through the housing passes across but not through the membrane.