Spring-Loaded Fluid Dosing Device with Nested Drive Element
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices for administering fluid products, such as medicaments, often face challenges in maintaining dosing accuracy, especially when dealing with high viscosity fluids or large doses, which can lead to inconsistencies in delivery.
Innovation Solution
A device with a preloaded spring mechanism that axially moves a stopper in a carpule, featuring a distribution stop and a holding element to ensure precise dosing, where the spring's force is harnessed to dispense a fixed dose without compromising accuracy, even with high viscosity fluids or large volumes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a spring mechanism is used to administer fluid products, then the dosing accuracy is improved, but the device cannot handle high viscosity fluids or large doses effectively
Solution Approach 1:
The drive element is designed as a sleeve-shaped structure that can at least partially accommodate the pre-tensioned spring within its hollow interior. This nested configuration allows the spring mechanism to generate sufficient force for large doses and high viscosity fluids while maintaining the precision engineering needed for accurate dosing, as the spring is contained within the drive element's hollow space
2Force
If a spring with large force is incorporated into the device, then high viscosity fluids can be administered, but the dosing accuracy may be impaired
Solution Approach 1:
The spring is nested within the hollow drive element, allowing a high-force spring to be incorporated without increasing the overall device footprint. The spring force is transmitted through the drive element's structured wall, which maintains dosing precision through its engineered geometry and connection to the plug positioning mechanism
Solution Approach 2:
The drive element acts as an intermediary component between the spring and the plug. It receives the spring force through its hollow structure and translates it into controlled axial movement of the plug, ensuring that the high force is converted into precise dosing action rather than uncontrolled movement
3Force
If the drive element is made deformable to accommodate the spring, then the spring force can be utilized, but the dosing precision may be compromised
Solution Approach 1:
The drive element is designed as a hollow sleeve that accommodates the spring within its interior space. The hollow structure provides the necessary flexibility to contain the spring while the engineered wall thickness and material properties ensure sufficient rigidity to maintain dosing precision during actuation
Solution Approach 2:
The drive element employs a hollow shell structure that provides controlled flexibility to accommodate the spring's presence and force generation, while the shell's engineered geometry and material properties maintain the structural integrity needed for precise dosing delivery
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 accurate and reliable dispensing of fluid products by utilizing a spring-loaded mechanism that maintains dosing precision, preventing deformation and ensuring consistent delivery of both high viscosity fluids and large doses without compromising accuracy.
Implementation Method 1
The device comprises a pre-tensioned spring (3), which is at least partially accommodated by a drive element (2). The spring (3) is supported at its distal end on the drive element (2) and at its proximal end on the retaining element (4).
Data Source
Figure 1
Figure 2a~2c
Figure 2d~3b
AI summary
The invention relates to a device for administering a dose of a fluid product, wherein, in a starting state of the device, a holding element (4) of the device is spaced apart in the proximal direction from a proximal end or portion of the housing (1b, 1k) and, moreover, a discharge stop of a drive member (2) of the device is provided, wherein the discharge stop (2b) of the drive member (2) can come into abutting contact with a discharge stop (1d) of the housing (1), and the discharge stop (2b) of the drive member (2) is arranged on the drive member (2) in a position axially offset in the proximal direction with respect to an engagement element (2a) of the drive member (2).