Humidifier Decoupling Mechanism Prevents Liquid Damage
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Solution Overview
Problem
Conventional humidified pressure support therapy systems are prone to damage from liquid spills due to direct connection between the humidification chamber and pressure generator, where excess liquid can enter the pressure generator, potentially damaging sensitive mechanical and electrical components.
Innovation Solution
A decoupling mechanism is introduced between the humidification chamber and the pressure generator, which disconnects the gas inlet of the humidification chamber from the pressure generator's outlet port when the humidifier cover is opened, preventing liquid from entering the pressure generator and protecting it from overfilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the humidification chamber is directly connected to the pressure generator, then the system structure is simple and easy to operate, but liquid can enter the pressure generator and cause damage
Solution Approach 1:
The system is divided into two separate domains: a liquid-containing domain (humidification chamber) and a gas-containing domain (pressure generator). The decoupler creates a physical separation between these domains, allowing liquid to be contained in one domain while gas flows through the other, preventing liquid from reaching the pressure generator.
Solution Approach 2:
The decoupler acts as an intermediary element between the humidification chamber and the pressure generator. It provides a controlled interface that allows gas to pass from the pressure generator to the humidification chamber while preventing liquid from moving in the reverse direction toward the pressure generator.
2Ease of operation
If the humidifier cover is opened for filling or cleaning, then user access is enabled, but liquid spills can occur and damage the pressure generator
Solution Approach 1:
The decoupler is pre-configured to automatically respond when the humidifier cover is opened. It proactively decouples the liquid-containing and gas-containing domains before liquid spills can occur, preventing the harmful effect before it can manifest.
Solution Approach 2:
The system applies a preliminary counter-action by decoupling the domains in advance when the cover is opened. This preemptive measure counteracts the potential harmful effect of liquid spills by removing the liquid from the pressure generator's path before the spill can occur.
3Reliability
If a decoupling mechanism is added to prevent liquid entry, then protection from liquid damage is improved, but the device complexity increases
Solution Approach 1:
The decoupler employs dynamic elements that allow the system to transition between coupled and decoupled states. When the humidifier cover is closed, the domains are coupled for normal operation. When the cover is opened, the decoupler dynamically separates the domains to prevent liquid damage, providing adaptability without permanent complexity.
Data Source
AI summary
A system is configured to prevent damage from liquid spills in a humidified pressure support therapy device. The system includes a decoupler configured to decouple a humidification chamber in a humidifier from a pressure generator of the pressure support therapy device in response to a cover of the humidifier being opened. This eliminates and/or reduces the possibility of liquid in an overfilled humidification chamber unintentionally and/or otherwise entering the pressure generator and damaging sensitive mechanical and/or electrical components. In some embodiments, the system includes one or more of a pressure generator, a humidifier, a subject interface, a sensor, the decoupler, a processor, electronic storage, a user interface, and/or other components.