Electronic Add-On Module for Injection Device Impact Damping
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Solution Overview
Problem
Existing add-on modules for medical injection devices increase the inert mass and stress components upon impact, potentially causing damage that is not visually apparent and may impair the device's functionality.
Innovation Solution
An add-on module with a two-part design, where the first part is axially fixed to the injection device and the second part can move relative to it, featuring a damping element to decelerate and distribute the impact force, and a holding mechanism to ensure secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an add-on module is mounted on the injection device, then monitoring and control functionality is improved, but the inert mass of the device increases
Solution Approach 1:
The add-on module is divided into two separate parts: a first part that is axially fixed to the injection device, and a second part that can move relative to the first part. This segmentation allows the monitoring functionality to be distributed, with sensors in the first part detecting position of the second part, thereby maintaining functionality while managing mass distribution to reduce impact stress.
2Reliability
If the add-on module is securely attached to the injection device, then reliability of connection is improved, but stress on interface components during impact increases
Solution Approach 1:
The second part of the add-on module is designed to move relative to the first part during impact events. This dynamic design allows the second part to decelerate independently upon impact, distributing the impact force over time and space, thereby reducing the peak stress transmitted to the interface components while maintaining secure attachment during normal operation.
3Stability of the object's composition
If the add-on module is rigidly connected to the injection device, then structural stability is improved, but damage to components upon impact increases
Solution Approach 1:
The system incorporates sensors in the first part that detect the position of the second part, enabling the system to anticipate and respond to impact events. The relative movement capability of the second part acts as a pre-designed cushioning mechanism, allowing controlled deceleration during impact to reduce transmitted forces and prevent damage to vulnerable components.
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
Minimizes mechanical stress on the injection device components by distributing impact forces, preventing damage and ensuring functional integrity post-impact.
Implementation Method 1
featuring a damping element to decelerate and distribute the impact force
Data Source
AI summary
Implementations relate to an electronic add-on module releasably attachable to an injection device prior to injection, a sensor element for detecting a state or process in the injection device, a processor element for evaluating and/or processing a signal of the sensor element, and an energy store for supplying the processor element with energy. The add-on module has a first module part, which is connectable along its longitudinal axis to the injection device in an axially fixed manner by means of a holding mechanism. A second module part is movable for a damped relative movement, such as a deceleration or braking movement, by a delay stoke with respect to the first module part connected to the injection device. By damping a relative movement between two module parts, the force transmission between the add-on module and the injection device is controlled and a maximum force surge is limited to the injection device.