Mechanical Dose Setting Drum with Integrated Indicator
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Solution Overview
Problem
Existing self-administration medical devices for medicaments face challenges in user-friendliness and accuracy when setting and ensuring the correct dose, particularly for devices with complex or bulky dose setting mechanisms.
Innovation Solution
A dose information device with mechanical dose setting and information means, featuring a rotating dose setting drum and locking mechanism, which indicates the correct dose visually and prevents over-rotation, allowing users to easily set and verify the prescribed dose without remembering it for subsequent deliveries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical dose setting limiter is added to prevent exceeding prescribed dose, then dosing safety is improved, but device complexity increases
Solution Approach 1:
The patent combines the dose setting function and dose indication function into a single integrated mechanical system. The dose setting drum and indicator are merged into one component that performs both functions, eliminating the need for separate limiter mechanisms while maintaining dosing safety.
Solution Approach 2:
The dose setting drum serves multiple functions: it sets the dose, displays the set dose, and prevents over-dosing through its mechanical design. This multi-functional component replaces what would traditionally require separate specialized components for each function.
2Measurement precision
If a dose setting limiter with projection and indicator is used, then dosing accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The dose setting drum automatically indicates the set dose through its integrated indicator mechanism. The system serves itself by providing visual feedback without requiring additional user actions or interpretations, making operation simpler while maintaining accuracy.
3Measurement precision
If separate dose setting and indication mechanisms are used, then dosing precision is improved, but device complexity increases
Solution Approach 1:
The patent merges the dose setting mechanism and indication mechanism into a single integrated dose setting drum assembly. This consolidation maintains precise dose control while reducing the number of separate components and simplifying the overall device structure.
Data Source
AI summary
A device to be used with a medical administration device includes administration driver for administrating a prescribed dose of medicament; and a mechanical dose setter for setting a prescribed dose of medicament to be administered, including a mechanical indicating member fixedly connected to the administration driver for indicating the prescribed set dose. The device includes a mechanical dose information device for registering the prescribed dose of medicament to be administered including a mechanical information member adjustable to display that the prescribed dose to be administered is correct and inter-connected to said mechanical indicating member such that when the prescribed dose is set, this is indicated positively by indications on the mechanical information member.