Bendable Locking Mechanism for Coded Drug Reservoirs
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Solution Overview
Problem
Existing medicament reservoir systems lack mechanisms to prevent incorrect cartridge loading and tampering, posing risks for users, especially those with limited dexterity or vision, and allowing potential misuse or counterfeiting.
Innovation Solution
A locking mechanism with a cylindrically shaped main body and a bendable feature that snaps into place to securely attach a reservoir to a holder, preventing removal and ensuring correct cartridge usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism with bendable features is added to prevent incorrect cartridge loading and tampering, then user safety and reliability are improved, but device complexity increases
Solution Approach 1:
The locking mechanism employs bendable features that can dynamically change position between engaged and disengaged states. These features flex outward during cartridge insertion to allow engagement, then spring back to lock the cartridge in place, providing adaptive security without complex fixed structures.
Solution Approach 2:
The locking mechanism is divided into multiple independent bendable features distributed around the cartridge perimeter. Each feature operates independently to provide multiple locking points, enhancing reliability while keeping individual feature complexity low and allowing modular manufacturing.
2Reliability
If a locking mechanism is implemented to secure the reservoir, then tampering prevention is improved, but ease of operation deteriorates
Solution Approach 1:
The bendable features automatically flex outward when force is applied during cartridge insertion, requiring minimal user effort. Once the cartridge is in place, the features spring back to engage and lock, providing secure attachment without requiring complex manual manipulation or additional tools.
Solution Approach 2:
The locking mechanism is self-actuating through the natural flexing and springing action of the bendable features. The user simply needs to insert or remove the cartridge; the locking features automatically engage or disengage based on the mechanical interaction, eliminating the need for separate locking or unlocking actions.
3Ease of manufacture
If bendable features are used in the locking mechanism, then manufacturing cost is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The bendable features utilize material property changes through controlled elasticity. By selecting appropriate materials with specific elastic moduli and thickness parameters, the features can be manufactured with standard tolerances while still achieving the required snap-action locking force, balancing precision requirements with manufacturing feasibility.
Solution Approach 2:
The locking mechanism appears designed for single-use or limited-use applications where the cartridge and locking mechanism are disposed of together. This allows use of simpler, less durable materials and manufacturing processes that would be unsuitable for permanent or reusable components, reducing overall manufacturing cost while meeting precision needs for the product lifecycle.
Data Source
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AI summary
A locking mechanism (200) is provided for use with a reservoir (500) and a reservoir holder so as to prevent unwanted tampering with the reservoir. The mechanism comprises a main body that is coupled to the reservoir. A first bendable feature (230) is provided on the main body. The first bendable feature snaps from a first position to a second position. In the second position, at least a portion of the bendable feature retains the reservoir within the locking mechanism.