Removable Injection Pen Module With Adaptive Bore Mounting
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Solution Overview
Problem
Existing injection monitoring modules for pen injection systems are bulky, unwieldy, and often manufacturer-specific, leading to user difficulties, electromagnetic interference, and inaccurate readings due to miniaturization and sensor separation.
Innovation Solution
A removably attachable injection monitoring module with a hollow main body and inner sleeve that co-rotates with the dose setting wheel, featuring magnetic sensors and a distal body portion with diameter altering means to ensure secure mounting and prevent axial movement, using a rotatable outer component and deformable inner component for frictional engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic components are integrated into the pen injection system body, then monitoring functionality is achieved, but the device becomes bulky and unwieldy
Solution Approach 1:
The monitoring system is segmented into a separate removable module that attaches to the pen injection system rather than integrating electronics directly into the pen body. This allows the monitoring functionality to be added without permanently increasing the pen's volume, as the module can be detached when not needed.
Solution Approach 2:
A magnetic coupling mechanism acts as an intermediary between the removable monitoring module and the pen injection system. The magnetic field production means and magnetic sensors enable wireless or contactless communication, eliminating the need for physical electronic integration while maintaining functional connectivity.
2Volume of moving object
If electronic components are miniaturized to reduce bulk, then device size is reduced, but electromagnetic interference increases
Solution Approach 1:
The magnetic sensors are extracted from proximity to the magnetic field production means by placing them in a separate removable module. This spatial separation eliminates electromagnetic interference while avoiding the need to miniaturize components, as the sensors can be positioned at an optimal distance from the magnetic source.
Solution Approach 2:
The magnetic coupling mechanism serves as an intermediary that transmits information between the pen injection system and the monitoring module without requiring close physical proximity. This allows the sensors to be positioned where they can detect magnetic field changes accurately while remaining far enough away to avoid interference from other electronic components.
3Object-affected harmful factors
If sensors are moved away from electronic components to reduce interference, then electromagnetic interference is reduced, but measurement precision decreases
Solution Approach 1:
The magnetic coupling mechanism acts as a mediator that enables accurate measurement of magnetic field changes despite the physical separation between sensors and the magnetic field source. The system is designed to detect the specific magnetic signature of the dose setting wheel's position, allowing precise measurement even at a distance.
Solution Approach 2:
The monitoring module is designed with specific magnetic field detection capabilities tailored to the local magnetic environment created by the dose setting wheel. The sensors are configured to detect changes in magnetic field strength and direction that correspond to specific wheel positions, ensuring measurement precision despite the distance from the magnetic source.
4Adaptability or versatility
If the monitoring system is made removable and adaptable, then versatility across different pen systems is improved, but device complexity increases
Solution Approach 1:
The monitoring module is designed with a universal mounting mechanism that can attach to various pen injection system brands and models. The magnetic coupling and friction engagement system provides a standardized interface that works across different pen types, eliminating the need for custom integration for each manufacturer.
Solution Approach 2:
The mounting mechanism is designed to be self-aligning and self-securing through magnetic attraction and friction engagement. The module automatically finds its correct position on the pen and secures itself without requiring complex alignment procedures or additional fastening steps, reducing operational complexity despite the removable design.
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 user-friendly, reliable, and manufacturer-independent monitoring system that minimizes electromagnetic interference and ensures accurate dose monitoring, suitable for various pen injection systems.
Implementation Method 1
a magnetic field production means, located on or within the hollow main body, at the proximal extremity of the central longitudinal bore
Implementation Method 2
an inner sleeve located within the central longitudinal bore, and configured to frictionally engage with an outer surface of the dose setting wheel to co-rotate around the central longitudinal axis, without axial translation along said central longitudinal axis
Implementation Method 3
said distal body portion comprising diameter altering means configured to dynamically alter an inner diameter of said central longitudinal bore
Data Source
AI summary
An injection monitoring module is adapted and configured to be removably mounted to an end of an injection pen having a body, a dose setting wheel connected thereto, and an injection activator. The dose setting wheel is rotatable about a central longitudinal axis of the pen injection system during dose setting and fixed against rotation during injection. The injection monitoring module comprises a hollow main body comprising a distal body portion, which extends around an outer surface of the injection pen body distally to the dose setting wheel, and the distal body portion comprises diameter altering means configured to dynamically alter an inner diameter of a central bore of the distal body portion from a first value to a second value different to the first value when mounting the injection monitoring module on the injection pen body.