Finger Clip Sensor Placement Feedback for Accurate Patient Monitoring
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Solution Overview
Problem
Existing non-invasive patient monitoring devices struggle with inaccurate measurements due to improper positioning of physiological sensors, which can be exacerbated by patient movement, leading to delayed or erroneous data.
Innovation Solution
A monitoring device determines a reference position for the sensor and provides real-time feedback to patients, using interactive games or alerts to ensure proper positioning, and optionally delays measurements until the sensor is correctly positioned.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time feedback and interactive games are implemented to guide patient positioning, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The system implements real-time feedback by continuously monitoring sensor position relative to the determined reference position and providing alerts or interactive game feedback to the patient. This closed-loop feedback mechanism guides the patient to maintain proper positioning, thereby improving measurement accuracy without requiring complex mechanical positioning systems.
Solution Approach 2:
The system enables patients to self-position the sensor correctly by providing them with real-time feedback through alerts or interactive games. Instead of requiring complex automated positioning mechanisms, the patient actively participates in achieving proper positioning based on system guidance, reducing device complexity while maintaining measurement accuracy.
2Measurement precision
If the monitoring device delays measurements until proper positioning is achieved, then measurement accuracy is improved, but productivity decreases
Solution Approach 1:
The system performs preliminary positioning verification by determining a reference position and checking whether the sensor is properly positioned before initiating measurements. This preliminary check ensures that only properly positioned sensors are used for measurements, improving accuracy while minimizing delays by preventing improper measurements from being taken in the first place.
3Ease of operation
If interactive games are displayed to help patient positioning, then ease of operation is improved, but use of energy increases
Solution Approach 1:
The system implements interactive games and alerts as periodic feedback mechanisms rather than continuous high-energy displays. The feedback is activated during positioning phases and can be reduced or adjusted during stable measurement phases, providing ease of operation when needed while managing energy consumption through periodic rather than continuous operation.
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
Enhances measurement accuracy by maintaining sensor alignment, reducing erroneous readings, and improving patient compliance through interactive feedback.
Implementation Method 1
After attenuation by tissue and fluids of the measurement site, a photodetection device(s) detects the attenuated light
Data Source
AI summary
A monitoring device for measuring one or more physiological parameters of a medical patient can include a finger clip sensor connected to a monitor. A placement indicator helps the patient to properly position the sensor. The monitor can display a message alerting the patient to reposition the sensor. The device can delay measurement until the sensor is properly positioned.