Drug Delivery Device Markings for Medication Identification
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Solution Overview
Problem
Drug delivery devices with similar appearances can lead to user confusion, increasing the risk of administering the wrong medication, as visual markings on cartridges may be difficult to distinguish once loaded into the device, and dedicated mechanical coding can complicate assembly, potentially causing damage.
Innovation Solution
The implementation of a set of components for drug delivery devices with substantially equivalent or identical markings, including tactile, color, and text markings, to ensure user identification of the correct drug during operation, with these markings being viewable and contactable at various stages of device use, such as when setting and delivering doses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If cartridges are marked with medicament details, then drug identification is improved, but the markings become difficult to see after the cartridge is loaded into the device
Solution Approach 1:
The patent transfers the medicament identification markings from the cartridge (internal component) to the outer housing of the injection device (external component). This dimensional relocation ensures markings remain visible and accessible to users throughout the device's operation, resolving the visibility problem when cartridges are loaded into devices.
2Loss of information
If reusable devices are marked with medicament differentiation, then user identification is improved, but the risk of loading wrong cartridge increases
Solution Approach 1:
The patent applies universal markings across all components of the device system (housing, cartridge, cap, plunger). This multi-component marking strategy creates redundant identification points, allowing users to verify medicament identity from multiple locations and reducing the risk of wrong drug administration even if one component is misidentified.
Solution Approach 2:
The consistent markings on multiple components provide continuous feedback to the user about the correct drug being administered. Users can verify the markings at different stages (assembly, preparation, administration), creating multiple opportunities to catch potential errors before wrong drug administration occurs.
3Manufacturing precision
If all detachable parts are dedicated or mechanically coded, then assembly accuracy is improved, but the device becomes difficult to understand and may cause excessive force application
Solution Approach 1:
The patent employs color markings on device components to provide visual cues about correct assembly and component identification. These color indicators work alongside mechanical coding to guide users through the assembly process without requiring complex mechanical features, reducing the likelihood of excessive force application and improving overall understandability.
Data Source
AI summary
A set of members for a drug delivery device comprises at least two components for the device, wherein both components are provided with a marking, the markings being substantially equivalent or identical. Furthermore, a drug delivery device and a set of drug delivery devices are provided.