Haptoglobin Dry Stick Lateral Flow Assay
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Solution Overview
Problem
Current methods for monitoring cow health in dairy farms lack a reliable and easy-to-use tool for early detection of diseases such as mastitis, metritis, lameness, and ketosis, which are critical for timely intervention and improving animal welfare and milk yield.
Innovation Solution
A dry stick configured as a competitive lateral flow stick that measures haptoglobin levels in raw milk samples, featuring a base pad with a labelled-control conjugate and immobilized target analyte, allowing for the formation of a complex with haptoglobin, and including a control line to ensure the stick's functionality, enabling quantitative haptoglobin measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reliable system for quantitatively measuring haptoglobin is developed, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical laboratory measurement systems with a lateral flow stick that uses capillary action and immunological reactions. The stick contains labelled-conjugate (antibody-haptoglobin complex) that binds to haptoglobin in the milk sample, forming a visible complex that can be detected without complex mechanical equipment. This substitution of mechanical/chemical laboratory methods with a simpler immunological lateral flow system resolves the contradiction by achieving quantitative measurement precision through a less complex device.
Solution Approach 2:
The patent changes the physical state and concentration parameters of the labelled-conjugate within the stick to optimize measurement. By controlling the concentration of labelled-conjugate (0.1-10 µg/ml) and its diffusion properties in the base pad, the system achieves reliable quantitative measurement. The parameter changes in the immunological reaction conditions allow precise measurement while maintaining relatively simple device structure.
2Reliability
If early detection of diseases is implemented through haptoglobin measurement, then reliability of disease detection is improved, but loss of time for treatment increases
Solution Approach 1:
The patent implements preliminary action by enabling farmers to measure haptoglobin levels in milk at the farm level before diseases become severe. The lateral flow stick allows detection of haptoglobin (which appears 24-48 hours after infection) on-site, enabling early intervention before the cow's condition deteriorates. This preliminary detection at the source (farm) rather than waiting for laboratory results resolves the contradiction by providing reliable disease detection while minimizing treatment delay.
Solution Approach 2:
The patent enables self-service disease monitoring by allowing farmers to perform haptoglobin measurements themselves using the lateral flow stick, without requiring external laboratory services. The stick is designed for easy on-site use with raw milk samples, empowering farmers to conduct reliable disease detection and take immediate treatment actions independently, thus reducing both time loss and improving reliability of early detection.
3Ease of operation
If on-site measurement of haptoglobin is enabled, then ease of operation is improved, but measurement precision may worsen
Solution Approach 1:
The patent uses an intermediary labelled-conjugate (antibody-haptoglobin complex with visible label) that mediates between the simple on-site operation and precise measurement requirements. The labelled-conjugate diffuses from the base pad and binds to haptoglobin in the sample, creating a visible complex that provides quantitative information. This intermediary allows farmers to simply apply milk to the stick (easy operation) while the labelled-conjugate system ensures precise measurement through its specific binding and visible signal, resolving the contradiction between ease of operation and measurement 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
Enables quick, reliable, and quantitative measurement of haptoglobin levels in raw milk, facilitating early detection of potential diseases and improving cow health monitoring, allowing for timely interventions and enhanced milk yield.
Implementation Method 1
a labelled-conjugate binds haptoglobin, and wherein a complex is formed between said labelled-conjugate and said haptoglobin
Implementation Method 2
a test line comprising immobilised target analyte, wherein said immobilised target analyte binds to said labelled-conjugate when not in said complex
Implementation Method 3
a control line, which is spaced from said test line, and which comprises control analyte capable of binding to said labelled-control conjugate
Implementation Method 4
a base pad capable of allowing lateral flow of fluid there through
Data Source
AI summary
A dry stick being a competitive lateral flow stick configured to measure haptoglobin in a raw milk sample, the dry stick having a base pad that allows lateral flow of fluid therethrough, with a labelled-control conjugate and a labelled-conjugate diffusibly arranged herein, the labelled-conjugate binding haptoglobin, a complex forming between the labelled-conjugate and the haptoglobin. The base pad also includes a test line with immobilised target analyte, the immobilised target analyte binding to the labelled-conjugate when not in the complex; and a control line, which is spaced from the test line, and which includes control analyte that binds to the labelled-control conjugate.