Supplemental Oxygen Administration for Delayed Hypoxia Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods fail to address the delayed effects of exposure to reduced oxygen partial pressure environments, particularly in individuals with special sensitivities, such as those with pre-existing neurological conditions, as they do not provide preventative measures to minimize or eliminate these effects.
Innovation Solution
Administering supplemental oxygen during exposure to reduced oxygen partial pressure environments to maintain a target oxygen partial pressure that the individual is accustomed to, either through portable devices or systems integrated into transportation vehicles, ensuring a zero net differential oxygen partial pressure and thereby mitigating the negative physiological effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If supplemental oxygen is administered only to treat immediate hypoxia symptoms, then immediate hypoxia is treated, but delayed effects such as post-flight seizures are not prevented
Solution Approach 1:
The patent applies preliminary action by administering supplemental oxygen during the exposure period itself, rather than waiting for delayed effects to manifest. By maintaining target oxygen partial pressure throughout the exposure period, the system prevents the physiological changes that would otherwise lead to delayed effects like post-flight seizures.
Solution Approach 2:
The patent implements preliminary anti-action by counteracting the reduced oxygen partial pressure environment during exposure through supplemental oxygen administration. This preemptive counter-action prevents the harmful physiological response that would otherwise occur after exposure ends, thereby addressing the reliability issue of delayed effect prevention.
2Reliability
If supplemental oxygen is administered continuously to maintain target oxygen partial pressure, then delayed effects are minimized, but oxygen consumption increases
Solution Approach 1:
The patent applies continuity of useful action by administering supplemental oxygen continuously throughout the exposure period to maintain target oxygen partial pressure. This continuous administration ensures consistent protection against delayed effects, though it does increase overall oxygen consumption compared to intermittent administration.
Solution Approach 2:
The system uses partial action by administering oxygen at levels sufficient to maintain target partial pressure without providing excessive oxygen beyond what is needed. The flow rate is adjusted to achieve the specific goal of maintaining target oxygen partial pressure, avoiding unnecessary oxygen consumption while still providing adequate protection.
3Quantity of substance
If supplemental oxygen flow rate is increased to compensate for reduced oxygen partial pressure, then oxygen delivery is improved, but the system complexity increases
Solution Approach 1:
The patent implements feedback by using a controller to monitor and adjust the supplemental oxygen flow rate based on the need to maintain target oxygen partial pressure. The system responds to changes in exposure conditions by adjusting oxygen delivery, which improves oxygen quantity delivery while managing system complexity through automated control rather than manual adjustment.
Solution Approach 2:
The system changes the parameter of oxygen flow rate dynamically to compensate for reduced oxygen partial pressure in the environment. By adjusting this single critical parameter, the system improves oxygen delivery effectiveness without requiring complex structural modifications to the overall device architecture.
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 approach effectively minimizes or eliminates the delayed negative effects on individuals exposed to reduced oxygen partial pressure environments, such as post-flight seizures, by maintaining a stable oxygen level comparable to their normal environment, thus enhancing safety and comfort for sensitive individuals.
Implementation Method 1
Oxygen accounts for approximately 21% of dry air and the partial pressure of oxygen will decrease in proportion to the decrease in ambient pressure. Accordingly, and by way of example, the partial pressure of oxygen in ambient pressure at sea level is approximately 3.1 psi and will thus proportionally decrease to approximately 2.3 psi in the pressurized aircraft cabin.
Data Source
AI summary
Described herein are methods which involve minimizing or eliminating the occurrence of delayed negative effects that may arise from exposure to reduced oxygen partial pressure. An amount of supplemental oxygen, which substantially mimics a target oxygen partial pressure, is administered to an individual that is exposed to a reduced oxygen partial pressure environment, to compensate for the reduced oxygen partial pressure. The target partial pressure may be selected such that the individual experiences substantially no change in the oxygen partial pressure. Individuals receiving the supplemental oxygen may be healthy, have special sensitivities, or have a pre-existing neurological condition.