Drug Delivery Cap Window Aperture for Information Visibility
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Solution Overview
Problem
Drug delivery devices lack efficient information retrieval mechanisms, leading to user confusion and potential misuse, especially when handling multiple medicinal products, due to obstructive cap designs and cluttered information presentation.
Innovation Solution
A drug delivery device with a cap that is rotationally fixed to the housing, featuring a window aperture allowing clear display of crucial information from the cartridge holder without obstruction, enabling users to view medicinal product details and fill status without removing the cap, and incorporating orientation features to ensure correct assembly and reduce confusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the cap is made opaque and fully covering the distal end, then protection against contamination is improved, but information visibility is worsened
Solution Approach 1:
The cap is segmented into opaque and transparent portions, allowing different functions in different regions. The transparent portion allows information to be seen while the opaque portions provide contamination protection, resolving the contradiction between protection and visibility.
Solution Approach 2:
Different portions of the cap have different optical properties (opaque vs transparent). The transparent portion is specifically positioned to allow viewing of information on the cartridge holder, while other portions remain opaque for protection, applying local quality differentiation to resolve the contradiction.
2Quantity of substance
If multiple information elements are displayed on the cartridge holder, then information completeness is improved, but information clarity is worsened
Solution Approach 1:
The window aperture extracts and isolates specific critical information from the complete set of information on the cartridge holder. By creating a focused viewing area, it separates the most important information (medicinal product details, fill status) from other less critical information, maintaining clarity while preserving completeness.
Solution Approach 2:
The window aperture creates a localized viewing region with enhanced visual quality. Information within the window aperture area is displayed with higher clarity and prominence compared to information outside the window, allowing users to quickly identify critical information without being overwhelmed by all information elements.
3Adaptability or versatility
If the cap is made rotatable, then adaptability is improved, but information display reliability is worsened
Solution Approach 1:
Instead of making the cap rotatable to achieve adaptability, the invention inverts the approach by making the cap rotationally fixed. This ensures that the window aperture always aligns with the information on the cartridge holder, guaranteeing reliable information display while maintaining adaptability through the fixed alignment design.
Solution Approach 2:
The cap and cartridge holder are designed with asymmetric features that ensure a specific rotational alignment when assembled. This asymmetric design provides adaptability in assembly while simultaneously ensuring that the window aperture reliably displays information, as the asymmetric features prevent incorrect rotation.
Data Source
AI summary
The present invention relates to a drug delivery (5) comprising a housing (10) with a proximal end (28) and a distal end (22), a cartridge holder (14) adapted to retain a cartridge, the cartridge holder (14) being secured to the housing (10) and having an at least partially transparent side wall, and a cap (40) being capable of covering the distal end (22) of the drug delivery device, being rotationally fixed with respect to the housing (10) and comprising a window aperture (44), the window aperture (44) being capable of displaying information revealed by the cartridge holder (14). Furthermore, using a cap (40) for covering the distal end (22) of the drug delivery device (5) is disclosed.