Disposable Injector Traction Rod Blocking Mechanism
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Solution Overview
Problem
Current single-use injectors are complex, have many components, and do not ensure safe storage and simple handling, which complicates their design and functionality.
Innovation Solution
A modular single-use injector design featuring a pot-shaped housing with articulated or flexurally elastic blocking elements supported on an intermediate floor, secured by a trigger element that releases to allow the piston-actuating plunger to move under spring energy, ensuring safe storage and simple operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multiple tension rods are supported on rigid flat plates, then structural stability is improved, but device complexity increases
Solution Approach 1:
The injector is divided into modular components: a pot-shaped housing with an intermediate floor, a separate piston-actuating plunger with pull rod, and distinct blocking elements. This segmentation allows each component to be optimized independently while maintaining overall structural stability through their coordinated arrangement.
Solution Approach 2:
The blocking elements are designed to be movable rather than fixed, transitioning between a blocking position (secured by trigger element) and a released position. This dynamic design allows the system to maintain stability during storage while enabling simple operation during use, reducing the need for complex fixed structural supports.
2Ease of operation
If articulated or elastic blocking elements are used with trigger element, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The blocking elements are designed to be self-actuating through their elastic or articulated properties. When the trigger element is actuated, the blocking elements automatically transition from blocking to released position under their own elastic recovery or mechanical advantage, without requiring additional actuating mechanisms or complex control systems.
Solution Approach 2:
The injector is designed as a single-use disposable device. The blocking elements and trigger mechanism are optimized for simple, reliable operation during one use rather than long-term durability. This allows for simpler designs that prioritize ease of operation over complex reusable mechanisms.
3Productivity
If piston-actuating plunger is held by spring energy store, then productivity is improved, but device complexity increases
Solution Approach 1:
The spring energy store is pre-loaded during device assembly or storage, storing the energy needed for injection in advance. When the trigger element is actuated, the pre-compressed spring immediately releases energy to drive the piston-actuating plunger, enabling rapid injection without requiring complex power sources or energy management systems during operation.
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 design results in a compact, safe, and user-friendly injector with reduced components, ensuring reliable function and easy handling by releasing the piston-actuating plunger under spring energy, enhancing safety and usability.
Implementation Method 1
at least one spring-loaded energy storage device (50) is arranged in or on the housing (10), in each case at least in certain areas, with the spring-loaded energy storage device (50) comprises at least one prestressed spring element (50)
Implementation Method 2
Blocking elements (16) are supported on the housing (10) on the support surface or surfaces, the blocking elements being either angle elements which are articulated in the area of their kinks on the intermediate floor (32)
Implementation Method 3
or the blocking elements being flexurally elastic Elements are formed on the intermediate floor (32)
Data Source
Figure 1~4
Figure 5~6
Figure 7~10
AI summary
A disposable injector has a housing (10) in which are arranged at least one mechanical spring energy accumulator (50), at least one cylinder-piston unit (100) that can be filled at least in part with an active substance, at least one piston actuation plunger (60) and at least one triggering unit (80). The spring energy accumulator comprises at least one pre-loaded spring element. The spring-loaded piston actuation plunger has at least one traction rod (61) with at least one support surface (63) at the rear end thereof. Locking elements (16) supported on the housing lie on the support surface(s) and are secured in the locking position by a triggering element (82) placed in a locking position (8). The triggering element has a release position (9) that causes the locking element (16) to be unlocked.