Medical Gas Flow Direction Detection Using Dual Sensors
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Solution Overview
Problem
Existing devices for monitoring medical gas therapy adherence in patients with respiratory disorders often fail to accurately determine adherence due to incorrect connection orientations, leading to loss of compliance data and reduced therapeutic effectiveness.
Innovation Solution
A device with a sensor arrangement comprising a first and second sensor spaced along a fluid channel, connected to a control unit that determines the flow direction of medical gas, providing feedback on correct orientation and ensuring accurate adherence measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an adherence device is provided in connection with a therapeutic device, then adherence monitoring capability is improved, but the device requires specific connection orientation which increases complexity and risk of incorrect connection
Solution Approach 1:
The patent applies asymmetry by providing asymmetric coupling configurations where at least one coupling is designed with directional characteristics. This allows the device to automatically indicate correct connection orientation through the asymmetric design, eliminating the need for complex orientation indicators while ensuring reliable adherence monitoring only when connected correctly.
Solution Approach 2:
The device performs self-verification of correct connection through the asymmetric coupling design. The system automatically detects and indicates improper connection orientation without requiring external verification, allowing the device to self-correct or alert the user to connection errors, thereby maintaining reliability while reducing operational complexity.
2Device complexity
If a single sensor is used in the device, then device complexity is reduced, but measurement precision of flow direction is insufficient
Solution Approach 1:
The patent introduces a differential pressure sensor as an intermediary measurement element that indirectly detects flow direction. Instead of directly measuring flow direction with complex sensors, the system uses pressure differential measurements across the channel to infer flow direction, achieving precise measurement while maintaining simple device architecture.
Solution Approach 2:
The patent employs pneumatic measurement principles by using pressure sensors to detect flow characteristics. The differential pressure created by gas flow through the channel is measured to determine flow direction, leveraging fluid dynamics principles to achieve accurate measurement with simple sensor technology.
3Measurement precision
If the device requires specific connection orientation, then measurement accuracy is improved, but ease of operation is reduced due to cumbersome handling
Solution Approach 1:
The asymmetric coupling design provides visual and physical indicators that guide users to the correct connection orientation. The asymmetric features serve as built-in instructions, making the correct connection method obvious without requiring complex manuals or training, thereby maintaining measurement accuracy while improving ease of operation.
Solution Approach 2:
The device provides immediate feedback when connected incorrectly through the asymmetric coupling design. The physical or visual indication of improper connection allows users to quickly identify and correct connection errors, ensuring accurate adherence measurement while maintaining simple operation through intuitive feedback mechanisms.
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 device ensures reliable adherence data collection by detecting incorrect connections and providing feedback, enhancing the accuracy and reliability of medical gas application, thereby improving patient treatment outcomes.
Implementation Method 1
a first sensor (30) for measuring a value of a first flow parameter in said channel and a second sensor (32) for measuring a value of a second flow parameter in said channel
Implementation Method 2
the first sensor and the second sensor are spaced apart from each other along a longitudinal axis of the channel
Data Source
AI summary
The present invention pertains to a device and corresponding method for determining information relating to the treatment of a patient, preferably relating to a patient having a respiratory disorder. The device comprises a fluid channel configured to be in fluid communication with a medical gas source at a first end and with a patient interface at a second end, a sensor arrangement having at least a first sensor for measuring a value of a first flow parameter in the channel and a second sensor for measuring a value of a second flow parameter in the channel, wherein the first sensor and the second sensor are spaced apart from each other along a longitudinal axis of the channel, and a control unit in communication with the first sensor and the second sensor. The control unit determines flow direction of a medical gas in the channel based on sensor measurements.