Medicament Delivery Module Switch Using Actuation-Driven Battery Contact
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Solution Overview
Problem
Existing medicament delivery devices lack efficient and space-saving electronic modules with integrated monitoring and communication features, requiring additional components and occupying unnecessary space.
Innovation Solution
An electronic module for medicament delivery devices that includes a printed circuit board, battery, and a switch element with a battery contact extension biased towards an activation contact, allowing for a compact design and activation through the device's actuation mechanism without additional switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate switch is added to activate the electronic module, then the electronic module can be activated, but the device complexity increases and space is consumed
Solution Approach 1:
The patent combines the switch function with the existing actuation mechanism of the medicament delivery device. The actuation element that normally drives the mechanical injection mechanism is also used to activate the electronic module by closing the electrical circuit, eliminating the need for a separate switch component.
Solution Approach 2:
The actuation element is given a dual function: it serves both as the mechanical driver for medicament delivery and as the activation switch for the electronic module. This multi-functionality reduces the overall component count while maintaining reliable activation control.
2Reliability
If additional components are added for electronic module activation, then activation functionality is achieved, but the battery capacity space is reduced
Solution Approach 1:
The switch contacts are integrated into the existing actuation mechanism structure, eliminating the need for separate switch housing and mounting components. This integration frees up valuable space within the device, allowing for a larger battery capacity while maintaining full activation functionality.
3Reliability
If a separate switch is positioned on the PCB, then the electronic module can be activated, but the monitoring unit length increases
Solution Approach 1:
The switch contacts are formed as integral parts of the existing actuation mechanism components rather than as separate elements mounted on the PCB. This integration eliminates the need for additional space on the PCB for switch mounting, keeping the monitoring unit compact and maintaining its original length.
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
The solution provides a robust and reliable electronic module that requires fewer components, saving space for a larger battery capacity and enabling efficient monitoring and communication functions.
Implementation Method 1
The battery contact extension is biased towards the electric activation contact for closing a switching gap between the battery contact extension and the electric activation contact
Data Source
AI summary
An electronic module configured for releasable attachment to a medicament delivery device (20) includes a printed circuit board (16c) with an electronic circuit (29), a battery (16b), and a switch for activating the electronic module (16). The switch includes an electric activation contact (28) providing a connection with the electronic circuit (29) and a battery contact extension (27) extending from a terminal (16d, 16e) of the battery (16b). The battery contact extension (27) is biased towards the electric contact (28) for closing a switching or air gap (30) between the battery contact extension (27) and the electric activation contact (28), and the battery contact extension (27) is configured to engage an actuation element (11, 6) of the medicament delivery device (20) such that the actuation element (11, 6) pushes the battery contact extension (27) against the bias thereby creating the switching or air gap (30).