Membrane Actuator Gas Barrier for Glaucoma IOP Control
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Solution Overview
Problem
Existing membrane actuator devices for glaucoma treatment face issues with gas diffusion through the membrane, leading to an imbalance in gas molecular ratios and requiring continuous energy to maintain membrane deflection, which affects the longevity and reliability of IOP control systems.
Innovation Solution
A multi-chamber membrane actuator device with a gas generation chamber and a membrane actuation chamber connected by a passageway with barriers that restrict gas passage, reducing gas diffusion and promoting gaseous recombination, thereby maintaining a balanced gas ratio and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If gas generation chamber is connected to membrane actuation chamber, then membrane deflection is achieved, but gas molecules diffuse through the connection causing imbalance in gas molecular ratios
Solution Approach 1:
The device is divided into separate gas generation chamber and membrane actuation chamber, with the barrier creating distinct zones that prevent gas molecule diffusion while allowing pressure transmission. This segmentation maintains gas molecular ratio balance in each chamber independently.
Solution Approach 2:
A barrier is introduced as an intermediary element between the gas generation chamber and membrane actuation chamber. This barrier selectively transmits pressure changes while blocking gas molecule diffusion, thus maintaining gas composition stability while enabling membrane actuation.
2Reliability
If gas is continuously generated to maintain membrane deflection, then IOP control is maintained, but continuous energy consumption is required
Solution Approach 1:
Gas is generated in advance in the gas generation chamber and stored, creating a reservoir of gas molecules that will be released only when needed for membrane actuation. This preliminary gas generation eliminates the need for continuous energy input to maintain membrane deflection.
Solution Approach 2:
The system uses the stored gas in the gas generation chamber to self-regulate membrane position and maintain IOP control without requiring continuous external energy input. The barrier ensures gas is retained until naturally released for actuation purposes.
3Stability of the object's composition
If barrier is added to restrict gas passage, then gas diffusion is reduced, but device complexity increases
Solution Approach 1:
The barrier is implemented as a thin film or membrane structure that separates the two chambers. This thin-film approach provides effective gas diffusion restriction while minimizing the added structural complexity and volume of the device.
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 solution enhances the longevity and reliability of IOP control systems by minimizing gas escape, maintaining a balanced gas ratio, and reducing the need for continuous energy, allowing for efficient and controlled IOP regulation.
Implementation Method 1
a gas generating element configured to generate gas molecules
Implementation Method 2
A barrier spans the width of the first opening of the gas generation chamber and is disposed in a manner that reduces the likelihood that gas molecules will pass from the gas generation chamber to the membrane actuation chamber
Implementation Method 3
a flexible membrane configured to deflect and affect fluid flow through the fluid flow passageway
Data Source
AI summary
A membrane actuator device includes a housing with an entrance port and an exit port connected by a fluid flow passageway. A gas generation chamber is disposed within the housing, the gas generation chamber comprising a first opening and a gas generating element. A membrane actuation chamber has a second opening and may be defined at least in part by a flexible membrane configured to deflect and affect fluid flow through the fluid flow passageway. A barrier spans the width of the first opening of the gas generation chamber and is disposed in a manner that reduces the likelihood that gas molecules will pass from the gas generation chamber to the membrane actuation chamber.