Egg Allantoic Fluid Sampling Without Shell Piercing
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Solution Overview
Problem
Existing methods for determining the gender of chicken embryos in eggs are too slow, impractical, and unreliable, and often result in pollution and loss of the embryo due to needle insertion.
Innovation Solution
A method involving fluid coupling the egg's interior to a source of pressure to expel allantoic fluid without piercing the shell, using overpressure or underpressure to collect the fluid externally, and creating a sample passage for controlled fluid communication to minimize pollution and ensure accurate sampling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a needle is inserted into the egg to sample allantoic fluid, then the fluid can be obtained for gender determination, but the risk of polluting the interior of the egg and losing the embryo increases
Solution Approach 1:
The patent uses the eggshell's natural porous structure as an intermediary medium to transfer allantoic fluid from the interior to the exterior without direct needle penetration. The porous shell acts as a natural filter and transfer pathway, eliminating the need for invasive sampling while still obtaining sufficient fluid for analysis.
Solution Approach 2:
The patent replaces the mechanical needle insertion system with a pressure-based fluid dynamics system. By applying controlled pressure differentials across the eggshell, the allantoic fluid is naturally expelled through the porous structure without mechanical penetration, substituting a non-invasive physical field approach for a mechanical intrusion approach.
2Reliability
If known methods are used to determine gender in ovo, then gender determination can be performed, but the process is too slow and impractical for industrial purposes
Solution Approach 1:
The patent utilizes the eggshell's inherent porosity and the natural pressure gradients within the egg as self-service mechanisms. The system leverages the egg's own physical properties to perform the sampling function without requiring complex external equipment or time-consuming procedures, enabling rapid processing suitable for industrial automation.
Solution Approach 2:
The patent changes the pressure parameter within the egg to control fluid expulsion. By dynamically adjusting the pressure differential between the interior and exterior of the egg, the system can rapidly extract allantoic fluid on demand, transforming a static sampling process into a dynamic, controllable, and high-speed operation.
3Object-affected harmful factors
If pressure is applied to expel allantoic fluid through the porous shell, then sampling can be performed without piercing the shell, but precise control of fluid expulsion is required
Solution Approach 1:
The patent incorporates feedback mechanisms to monitor and adjust the pressure applied to the egg. By sensing the rate and amount of fluid expulsion in real-time, the system can dynamically adjust pressure levels to maintain optimal sampling conditions, preventing both insufficient sampling and excessive pressure that could damage the embryo.
Solution Approach 2:
The patent employs dynamic pressure control rather than static pressure application. The pressure system can rapidly adjust its output in response to changing conditions, allowing precise control over the fluid expulsion process while maintaining the protective benefit of non-piercing sampling.
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
This method reduces the risk of pollution and improves the reliability of gender determination by efficiently expelling and collecting allantoic fluid without damaging the egg, facilitating precise analysis while maintaining egg integrity.
Implementation Method 1
fluid coupling an interior of the egg to a source of pressure, controlling the pressure in the interior of the egg by the source of pressure, expelling an amount of fluid, in particular allantoic fluid, from the interior of the egg to the exterior of the egg as a result of the pressure in the interior of the egg
Implementation Method 2
The egg shell adjacent the air cell has a porosity that enables to apply an overpressure to the interior of the egg through the air cell
Data Source
AI summary
The present invention relates to a method for sampling an egg, the method comprising;a) fluid coupling an interior of the egg to a source of pressure,b) controlling the pressure in the interior of the egg by the source of pressure,c) expelling an amount of fluid, in particular allantoic fluid, from the interior of the egg to the exterior of the egg as a result of the pressure in the interior of the egg, andd) collecting at least a portion of the amount of fluid at the exterior surface of the egg.