Colorimetric Time Indicator for Disposable Medical Devices
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Solution Overview
Problem
Medical devices, especially those for single patient use, lack indicators to show the time period of use, leading to potential infectious contamination due to extended use or improper handling.
Innovation Solution
A colorimetric time indicator is integrated into medical devices, which changes visually upon exposure to external stimuli, indicating the duration of use, thereby facilitating timely replacement and preventing contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual control of use time is relied upon with user manuals and labels, then device complexity is reduced, but reliability of infection control deteriorates due to lack of self-evident time indication
Solution Approach 1:
The patent applies colorimetric indicators that undergo visible color changes in response to environmental factors such as moisture, oxygen, or pH variations. These color changes provide self-evident visual indication of device use time and contamination status, eliminating the need for manual tracking while enhancing infection control reliability.
Solution Approach 2:
The device becomes self-monitoring through integrated colorimetric indicators that automatically respond to environmental conditions. The indicator serves itself by providing continuous visual feedback on device state without requiring external intervention, manual recording, or complex monitoring systems.
2Reliability
If disposable medical devices are used to minimize infectious contamination, then infection control is improved, but loss of time increases due to frequent replacement without time indication
Solution Approach 1:
Colorimetric indicators provide visual timing information that allows healthcare providers to accurately determine when disposable devices should be replaced. The color changes correspond to specific time intervals or contamination levels, eliminating guesswork and ensuring timely replacement to maintain infection control.
Solution Approach 2:
The colorimetric indicator provides continuous visual feedback on device usage status and contamination level. This feedback mechanism enables real-time monitoring and informed decision-making regarding device replacement timing, optimizing both infection control and operational efficiency.
3Device complexity
If no time indicator is provided on medical devices, then device complexity is minimized, but loss of information occurs regarding actual use time and contamination level
Solution Approach 1:
The patent incorporates colorimetric indicators that provide visual information about device use time and contamination status through color changes. This simple visual coding system delivers critical information without adding complex electronic displays, sensors, or data processing systems.
Solution Approach 2:
The colorimetric indicator acts as an intermediary that translates complex internal device state information (use time, contamination level) into simple visual signals. This mediator bridges the gap between device functionality and user understanding, providing essential information in an intuitive format.
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 colorimetric time indicator effectively prevents extended use and contamination by providing a visual indication of the device's usage time, enhancing infection control and reducing hospital-acquired infections.
Implementation Method 1
The colorimetric layer is configured to change at least one visible parameter upon exposure to one or more external stimuli
Data Source
AI summary
A colorimetric time indicator configured to indicate time specificity is provided. The colorimetric time indicator includes a colorimetric layer configured to be operatively coupled to a disposable medical device. The colorimetric time indicator is configured to indicate the time specificity via one or more visual indicators upon exposure to one or more external stimuli.