Sequential Gas Delivery for Precise Intermittent Hypoxia Dosing
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Solution Overview
Problem
Current methods for providing intermittent hypoxia to subjects are unreliable, as they rely on trial and error to target and maintain oxygen concentration, and the actual arterial concentration of oxygen is unknown and not repeatable, leading to inefficiencies and potential harm.
Innovation Solution
A sequential gas delivery system that precisely controls end tidal oxygen and carbon dioxide concentrations, allowing for rapid induction and maintenance of normoxic and hypoxic states independently of breathing patterns, ensuring a therapeutically effective dose is achieved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If trial and error method is used to target and maintain hypoxia, then the system can be simple, but the reliability and precision of oxygen concentration control deteriorates
Solution Approach 1:
The system uses end-tidal gas analysis to provide real-time feedback on the subject's respiratory status and oxygen levels. This feedback loop allows the system to automatically adjust gas delivery to maintain target oxygen concentrations, replacing trial-and-error methods with precise, data-driven control.
Solution Approach 2:
The patent replaces manual trial-and-error adjustment with an automated control system that uses electronic sensors, microprocessors, and software algorithms to precisely regulate oxygen delivery. This substitution of mechanical/manual control with electronic automation achieves both simplicity and precision.
2Device complexity
If trial and error method is used to maintain hypoxia, then the device can be simple, but the reliability of achieving therapeutic dose deteriorates
Solution Approach 1:
Real-time monitoring of end-tidal oxygen and carbon dioxide levels provides continuous feedback to the control system, enabling automatic adjustment of gas delivery. This ensures reliable achievement of therapeutic hypoxic doses while simplifying the delivery process through automation.
Solution Approach 2:
The system dynamically adjusts gas delivery parameters (flow rates, concentrations, timing) based on measured end-tidal values and subject response. This parameter optimization ensures reliable therapeutic delivery without requiring complex manual intervention.
3Device complexity
If non-rebreathing masks are used for intermittent hypoxia, then the device complexity is reduced, but the precision of oxygen concentration control deteriorates
Solution Approach 1:
End-tidal gas analysis provides real-time feedback on actual oxygen delivery, enabling the control system to compensate for variations in subject breathing patterns and maintain precise target concentrations despite using simple non-rebreathing mask hardware.
Solution Approach 2:
The patent replaces complex mechanical oxygen concentration control mechanisms with electronic control based on sensor feedback. This allows precise oxygen delivery using simple mask hardware, achieving high precision without increased device complexity.
4Measurement precision
If sequential gas delivery is implemented for precise control, then oxygen concentration precision improves, but device complexity increases
Solution Approach 1:
The control system uses feedback from end-tidal gas analysis to automatically regulate sequential gas delivery, eliminating the need for complex manual coordination. This feedback-driven automation achieves precise oxygen control while keeping the user interface simple.
Solution Approach 2:
The control system performs multiple functions (monitoring end-tidal gases, calculating delivery parameters, controlling gas valves, adjusting flow rates) through a single integrated software platform. This multi-functionality achieves precise sequential gas delivery without proportionally increasing device complexity.
5Measurement precision
If sequential gas delivery is used to control both oxygen and carbon dioxide, then control precision improves, but gas consumption increases
Solution Approach 1:
The system optimizes gas delivery parameters (concentrations, flow rates, duration) based on real-time end-tidal measurements and subject response. This parameter optimization achieves precise control of both oxygen and carbon dioxide while minimizing total gas consumption through efficient delivery scheduling.
Solution Approach 2:
The system delivers gas in precisely timed partial doses rather than continuous flow, providing only the amount needed to achieve target end-tidal concentrations. This partial action approach maintains precision while reducing overall gas consumption compared to continuous delivery methods.
Data Source
AI summary
A system (100) and a method (200) for providing intermittent hypoxia using sequential gas delivery to a subject are disclosed. The method (200) comprises the step (204) of inducing a normoxic end tidal partial pressure of oxygen using a sequential gas delivery system within a first specific number of breaths for a first duration and the step (208) of inducing a hypoxic end tidal partial pressure of oxygen using the sequential gas delivery system within a second number of breaths for a second duration and repeating the steps for a target number of cycles until a therapeutically effective dose of intermittent hypoxia is attained. The sequential gas delivery system (100) may control the end tidal partial pressure of carbon dioxide simultaneously and independently of the end tidal partial pressure of oxygen. The method (200) may be applied in the treatment of a pathological condition in a subject or for improving a health condition of a subject.