Syringe Centering Collar and Area for Dosing Precision
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Solution Overview
Problem
Existing syringe and dosing device systems face challenges in achieving precise dosages due to misalignment, tilting, and non-round syringe barrels, which lead to dosing errors and reduced accuracy.
Innovation Solution
A syringe system with a centering collar and centering area that allows for precise axial insertion into a dosing device, using radially adjustable gripping devices for secure fixation, and a centering element that corrects non-round shapes to ensure accurate alignment and prevent tilting, thereby enhancing dosing precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional syringe fixation mechanism is used, then the syringe can be securely held in the dosing device, but the syringe must be manually handled for insertion and coupling, increasing operation complexity and time
Solution Approach 1:
The syringe automatically centers itself in the dosing device through the interaction between the centering element and centering area, eliminating the need for manual alignment. The radially adjustable gripping devices automatically engage with the syringe barrel during insertion, providing secure fixation without requiring manual coupling operations.
2Measurement precision
If manual alignment of the syringe is attempted, then positioning may be achieved, but misalignment and tilting occur due to non-round syringe barrels, reducing dosing precision
Solution Approach 1:
The centering element and centering area are designed to perform preliminary centering action before the dosing operation begins. The centering area with its specific contour (circular, polygonal, or oval) pre-aligns the syringe barrel with the dosing device axis, compensating for any non-roundness in the syringe barrel and preventing tilting during operation.
3Ease of operation
If the syringe is inserted without a centering mechanism, then insertion is simple, but misalignment and tilting occur leading to dosing errors
Solution Approach 1:
The centering element and centering area act as intermediary components between the syringe and the dosing device. These components mediate the alignment process by providing a geometric interface that guides the syringe into the correct position, ensuring both simple insertion and high dosing accuracy without requiring complex manual alignment procedures.
Data Source
Figure 1(a)~1(f)
Figure 1g
Figure 1h
AI summary
Syringe for use with a dosing device comprising a syringe cylinder and a syringe plunger, wherein the syringe cylinder has an outlet at the bottom, a centering collar at the top of the outer circumference, a piston bore area connected to the outlet in which the syringe plunger is guided in a sealing manner, and a centering area further up, the syringe plunger has a coupling piece at its upper end, the inner diameter in the centering area is at least 16.2 mm and at most 17.7 mm, the syringe cylinder has the piston bore area and the outlet on a lower part and the centering collar and the centering area on an upper part, and the upper part is connected to the lower part and is an adapter.