Autoinjector Drive Chassis Merging Limbs for Compact Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current autoinjectors are complex, costly, and environmentally impactful due to their large size, high material usage, and complex assembly processes, which complicates manufacturing, storage, and transportation, especially when requiring low temperatures.
Innovation Solution
A compact autoinjector design featuring a drive chassis with parallel dispensing and trigger limbs, a trigger arm, and a drive spring, which reduces the number of components and simplifies the assembly process, allowing for a smaller form factor and lower material usage, while maintaining functionality for medicament delivery and needle protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional autoinjector designs are used, then reliable medicament delivery is achieved, but device complexity and material usage increase
Solution Approach 1:
The patent combines the trigger limb and dispensing limb into a single integrated drive chassis component, reducing the number of parts while maintaining the separate functional pathways needed for reliable medicament delivery. This merging eliminates the need for additional connecting components between trigger and dispensing mechanisms.
Solution Approach 2:
The drive chassis serves multiple functions: it acts as both the trigger mechanism support and the dispensing mechanism support, while also providing structural housing for the drive spring. This multi-functionality reduces overall device complexity without compromising medicament delivery reliability.
2Reliability
If traditional autoinjector designs are used, then functional requirements are met, but material usage and cost increase
Solution Approach 1:
By merging the trigger limb and dispensing limb into one piece, the patent reduces the total quantity of material required for manufacturing the drive chassis, directly addressing material usage and cost concerns while preserving all necessary functions.
Solution Approach 2:
The drive spring is nested within the hollow interior of the drive chassis, optimizing space utilization and reducing the overall device volume. This nesting arrangement allows efficient packing of components without requiring additional material for separate housing structures.
3Reliability
If traditional autoinjector designs are used, then medicament delivery is ensured, but device volume and storage requirements increase
Solution Approach 1:
The drive spring is positioned inside the hollow drive chassis, and the entire drive chassis is contained within the outer housing. This nested arrangement minimizes device volume while ensuring all components are properly positioned for reliable medicament delivery.
Solution Approach 2:
The trigger limb and dispensing limb are arranged in parallel dimensions within the drive chassis, allowing both functional pathways to coexist in a compact volume. This dimensional arrangement enables efficient space utilization without compromising medicament delivery functionality.
4Reliability
If traditional autoinjector designs are used, then complete functionality is achieved, but manufacturing and assembly complexity increase
Solution Approach 1:
The integration of trigger and dispensing limbs into a single molded part dramatically simplifies the assembly process, as fewer components need to be handled, positioned, and secured during manufacturing. This merging maintains complete functionality while improving ease of manufacture.
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 compact design minimizes material usage, reduces manufacturing and storage costs, and enhances environmental sustainability by reducing the volume required for transport and storage, while ensuring efficient medicament delivery and user feedback mechanisms.
Implementation Method 1
the autoinjector comprises a drive spring, wherein the drive spring is arranged within the housing of the autoinjector between a distal housing wall and the drive chassis
Data Source
AI summary
An autoinjector includes a housing and a drive chassis arranged linearly moveable within the housing, the drive chassis including a dispensing limb and a trigger limb, wherein the trigger limb and the dispensing limb are arranged in parallel to one another respectively at least essentially in parallel to one another and are connected to one another at a respective distal end of the dispensing limb and the trigger limb.