Drug Delivery Piston Rod Color-Changing Indicators
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Solution Overview
Problem
Current drug delivery devices lack effective visual indicators to inform users about dosage administration status, making it difficult for patients to track dose delivery and adherence during self-administration.
Innovation Solution
The drug delivery device incorporates a piston rod with light-sensitive ink or color-changing indicators that provide visual cues through transparent cartridge holders, allowing users to monitor dose delivery progress and adherence by observing color changes in response to ambient light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a drug delivery device is configured to deliver multiple doses, then the device can provide sustained treatment over time, but the user cannot easily track which doses have been administered and when
Solution Approach 1:
The patent applies color-changing indicators on the piston rod that change color in response to ambient light exposure. Each color change corresponds to a specific dosage administration event, allowing users to visually track which doses have been delivered and when. This resolves the information loss problem by providing clear visual feedback about dosage status without requiring electronic displays or complex interfaces.
2Loss of information
If visual indicators are added to the device to show dosage status, then users can track dose delivery, but the device structure becomes more complex
Solution Approach 1:
The patent uses simple color-changing indicators printed or applied on the piston rod surface. These indicators change color when exposed to ambient light during dosage administration. This approach provides clear dosage tracking information while maintaining a simple mechanical structure without requiring electronic components, displays, or complex mechanical mechanisms.
Solution Approach 2:
The color-changing indicators automatically respond to ambient light conditions to indicate dosage status. The system self-updates its visual state based on environmental conditions, eliminating the need for external power sources, electronic controls, or user intervention to display dosage information. This self-service approach reduces device complexity while maintaining information display functionality.
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 enables users to accurately track the delivery of multiple doses and adherence, minimizing inaccuracies and ensuring proper use by providing a visual reminder of administered doses and their timing.
Implementation Method 1
a piston rod with light-sensitive ink or color-changing indicators that provide visual cues through transparent cartridge holders, allowing users to monitor dose delivery progress and adherence by observing color changes in response to ambient light
Data Source
Figure 1
Figure 2A~2C
Figure 3A~3C
AI summary
The present invention relates to a drug delivery comprising a housing (10) adapted to retain a cartridge (16) and a piston rod (26), the piston rod (26) being adapted to drive a piston (28) so as to engage the piston (28) into the cartridge (16) in response to operating an operating button (30), and an indicator means (40) being capable of revealing usage related information of the drug delivery device (5), the indicator means (40) being movable with respect to the housing (10). Furthermore, using indicator means (40) on a drug delivery device (5), wherein the so as to reveal usage related information of the drug delivery device (5), wherein the indicator means (40) being movable with respect to a housing (10) of the drug delivery device (5) is disclosed.