Dosing Attachment Stop Body Limits Piston Stroke
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dosing devices, such as dosing pipettes, often lead to incorrect dosing, particularly for individuals with physical and mental disorders who struggle to measure precise volumes of liquid medicines.
Innovation Solution
A dosing attachment with a stop body that limits the piston's suction stroke, allowing for adjustable and fixed dosing volumes, preventing overdosing by ensuring the piston can only be pulled out to a predetermined height, which corresponds to a specific dosing volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dosing pipette without a stop mechanism is used, then the device structure remains simple, but incorrect dosing occurs due to inability to limit piston stroke
Solution Approach 1:
The dosing device is divided into two functional parts: the dosing pipette for liquid handling and the separate dosing attachment containing the stop mechanism. This segmentation allows the stop function to be added without complicating the main dosing mechanism, as the attachment can be detached or adjusted independently.
Solution Approach 2:
The dosing attachment acts as an intermediary component between the user and the dosing pipette. It provides the stop mechanism that limits piston stroke, serving as a mediating structure that prevents incorrect dosing without requiring modifications to the core dosing pipette design.
2Adaptability or versatility
If the stop body is made adjustable, then dosing volume can be customized, but the adjustment mechanism increases device complexity
Solution Approach 1:
The stop body is designed with adjustable positioning capability, allowing it to be moved along the dosing attachment to different locations. This dynamic adjustment enables customization of dosing volume while maintaining a relatively simple overall structure, as the adjustment involves basic mechanical movement rather than complex mechanisms.
Data Source
Figure 1~2
Figure 3~4
AI summary
An improved dosing device comprises a dosing pipette (1) and a dosing attachment (2). The dosing pipette (1) comprises a dosing body (3) and a piston (4) which is guided longitudinally within the dosing body (3). The dosing attachment (2) is connected or connectable to the dosing pipette (1). It comprises a stop body (16) with a stop (17) for the piston (4) (Fig. 2).