Electronic Detection Means for Injection Device Dose Accuracy
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Solution Overview
Problem
Existing injection devices lack accuracy in detecting set and injected doses, and they often increase in size when attempting to store and log injection data, while also being cumbersome for users with low dexterity or impaired finger strength.
Innovation Solution
An injection device with a dose setting mechanism that stores energy in a spring member, featuring electronic detection means for precise dose measurement and display, allowing for accurate tracking of set and injected doses without mechanical components, and an intuitive, pen-like design for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mechanical means (dose indicator barrel) are used for detecting and displaying dose amount, then the device structure is simple, but the measurement precision is insufficient
Solution Approach 1:
The patent replaces mechanical detection means (dose indicator barrel) with electronic detection means comprising sensors, processors, and electronic displays. This substitution enables more precise electronic measurement of dose amounts while eliminating the limitations of mechanical detection systems.
2Loss of information
If electronic display and data storage are added to the injection device, then information display capability is improved, but the device size increases
Solution Approach 1:
The patent integrates multiple functions into a single compact device: the injection mechanism, electronic detection system, data storage capability, and display function all work together in one unit. This multi-functionality allows the device to store and display injection data without requiring separate external equipment, thereby managing size efficiently while providing comprehensive information capabilities.
3Ease of operation
If spring member is used to store energy for driving injection, then user effort is reduced, but the control precision over injection speed may be compromised
Solution Approach 1:
The patent incorporates electronic detection means that continuously monitor the injection process parameters. This feedback system allows the device to track and record injection speed and dose delivery in real-time, providing precise control and documentation of the injection process even while the spring member provides the driving force.
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 device ensures uniform drug delivery, reduces user effort and pain during injection, and provides precise dose tracking, enhancing user safety and convenience, particularly for repetitive self-injections like insulin or growth hormone administration.
Implementation Method 1
operation of the dose setting mechanism causing energy to be stored in a spring member
Data Source
AI summary
An injection device (1) for injecting a dose of drug, e.g. insulin for diabetes treatment, in which energy is stored in a spring member (9, 24) during dose setting. The stored energy is released and used for driving an injection mechanism during injection of a previously set dose. The injection device (1) further comprises means for electronically detecting the amount of a set dose and/or means for electronically detecting the amount of an injected dose. The electronic detecting means allows storage and/or logging of data relating to injections performed using the injection device (1).