Hand Hygiene Compliance Confirmation System with Fast Sensor Initialization
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Solution Overview
Problem
Existing Hand Hygiene Compliance Confirmation Systems (HHCCS) face delays in confirming hand hygiene compliance due to response time issues, particularly in facilities using alcohol-based hand rubs, where sensor initialization and detection times can be lengthy, and in settings where hand hygiene compositions do not contain detectable markers.
Innovation Solution
The 'fast-to-GLC' system minimizes response time by initializing sensors and fans immediately upon hand hygiene composition dispensation, using a Hand Hygiene Composition Dispenser Monitor (HHCDM) to send signals for sensor and fan activation, and employing a Secondary Confirmation Signal generator to ensure timely detection of hand presentation, regardless of the presence of detectable markers, thus reducing the time to achieve a Green Light Condition (GLC).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If sensor initialization and detection procedures are performed using conventional HHCCS methods, then detection accuracy is maintained, but response time is lengthy
Solution Approach 1:
The system performs preliminary actions by initializing the sensor and starting the fan immediately upon detecting that hand hygiene composition has been dispensed, rather than waiting until hand presentation is detected. This advance preparation eliminates delays in sensor initialization and ensures the detection system is ready to immediately detect volatile compounds when the user presents their hands, thereby reducing response time while maintaining detection accuracy.
2Productivity
If the system waits for hand presentation before initializing sensors, then energy consumption is minimized, but compliance confirmation is delayed
Solution Approach 1:
The system uses feedback from the hand hygiene composition dispenser monitor to trigger sensor initialization. When the monitor detects that composition has been dispensed, it sends a signal to the compliance monitor to activate the sensor and fan. This feedback-based triggering ensures sensors are initialized at the optimal moment (immediately after dispensing) rather than continuously or only upon hand detection, balancing energy efficiency with rapid compliance confirmation.
3Loss of time
If conventional detection methods are used without pre-initialization, then device complexity is reduced, but response time increases
Solution Approach 1:
The system merges the initialization trigger with the hand hygiene composition dispensing event. By combining the dispenser monitor signal with the sensor initialization command, the system creates a unified workflow where one action (dispensing) automatically triggers the preparation sequence (sensor initialization and fan activation). This integration reduces detection delay while managing complexity through coordinated system design rather than separate independent components.
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 solution significantly reduces the time to confirm hand hygiene compliance, allowing Health Care Workers to achieve a GLC within seconds, enhancing compliance tracking and reducing the risk of infection transmission by ensuring timely and accurate verification of hand hygiene practices across various hand hygiene composition types.
Implementation Method 1
detection of volatile compounds on or emanating from the hands of a person who completes a hand hygiene procedure
Data Source
AI summary
Provided according to embodiments of the present invention are Hand Hygiene Compliance Confirmation Systems (HHCCS) that include a Hand Hygiene Composition Dispenser (HHCD); a Hand Hygiene Composition Dispenser Monitor (HHCDM) and a Hand Hygiene Compliance Monitor (HHCM). In some embodiments, the HHCDM detects when said HHCD dispenses Hand Hygiene Composition (HHC) and signals said HHCM to start a clock so that if the hands of a person are presented to said HHCM within a pre-defined period of time from the time that said HHCDM sends said signal to said HHCM, said HHCM sends a signal to at least one display to indicate hand hygiene compliance, referred to as a Green Light Condition or GLC. Related apparatus and methods are also provided.