Oblique Egg Positioning for Precise Allantoic Fluid Sampling
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Solution Overview
Problem
Existing egg testing devices are imprecise due to eggs not being rotationally fixed, leading to inconsistent liquid extraction locations and potential damage during sampling.
Innovation Solution
The device positions eggs at an oblique angle relative to gravity, using a lifting device to rotate and position eggs for precise liquid extraction, employing multiple cannulas with controlled vacuum aspiration and light barriers for accurate volume measurement, and simultaneous sampling with multiple devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If eggs are placed horizontally in a grid-like arrangement without rotational fixation, then the device structure is simpler, but the liquid extraction location becomes inconsistent and sampling precision deteriorates
Solution Approach 1:
The egg is rotated to a predetermined oblique angle (20°-80°) before sampling occurs. This preliminary positioning ensures that the allantoic fluid collects at a specific location within the egg, enabling consistent and precise extraction by the cannula without requiring complex rotational fixation during the sampling process itself
2Device complexity
If eggs are pierced perpendicular to the horizontal direction, then the sampling device structure is simpler, but the liquid extraction amount becomes inconsistent and sampling precision deteriorates
Solution Approach 1:
The egg orientation angle is changed from horizontal (0°) to an oblique angle (20°-80°). This parameter change in the egg's spatial orientation causes the allantoic fluid to redistribute and collect at a predictable location, enabling precise and reproducible liquid extraction with the cannula while maintaining a relatively simple sampling device structure
3Manufacturing precision
If eggs are rotated to an oblique angle for precise sampling, then liquid extraction precision improves, but the device complexity increases due to lifting and rotation mechanisms
Solution Approach 1:
The lifting device utilizes the egg's own weight and gravity to facilitate rotation and positioning. By lifting the egg vertically and allowing it to rotate under controlled conditions, the system uses the egg's inherent properties rather than requiring complex external rotation mechanisms, thereby reducing overall device complexity while maintaining sampling precision
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
Ensures reproducible extraction of predetermined fluid volumes with minimal shell damage, allowing for rapid and precise determination of embryonic sex by analyzing estrone sulfate concentration in allantoic fluid.
Implementation Method 1
The feeding device is designed such that it feeds the tray at an oblique angle of between 20° and 80° to a plane perpendicular to the direction of gravity to the sampling device
Implementation Method 2
employing multiple cannulas with controlled vacuum aspiration
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
The present invention relates to an egg inspection device comprising an egg tray (13) and a feeding device (1). The object of the invention is to provide a more precise method of egg sampling. For this purpose, the feeding device (1) is designed such that it feeds the egg tray (13) at an oblique angle of between 20° and 80° to a plane perpendicular to the direction of gravity to a device by means of which a hole is generated in the respective egg, through which a quantity of liquid can be extracted. The hole in the egg is formed in such a position that the angle between an axis of rotation of the respective egg and the direction of gravity by which the device generates the hole in the respective egg is between 30° and 60°.