Antibody-Based Tapeworm Coproantigen Detection Kit

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Solution Overview

Problem

Current methods for diagnosing parasitic worm infections, particularly tapeworms, are time-consuming, require specialized equipment, and are highly dependent on operator skill, often leading to missed diagnoses due to intermittent egg excretion and the need for complex stool handling.

Innovation Solution

Development of antibodies that specifically bind to tapeworm coproantigens, allowing for the detection and differentiation of tapeworm species through immunoassays, which can be used in devices and kits to identify tapeworms in fecal samples before egg or proglottid appearance, and distinguish between different worm types.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If microscopic examination of fecal samples is used for tapeworm diagnosis, then detection capability is provided, but the method is time-consuming and requires specialized equipment and operator skill

Engineering Contradiction:
Improvedetection capabilityVSAvoidspecialized equipment and operator skill requirement
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical microscopic examination system with an immunoassay system using antibodies that specifically bind to tapeworm coproantigens. This substitution eliminates the need for specialized microscopy equipment and extensive operator training, while maintaining or improving detection reliability through antibody-specific recognition of tapeworm antigens in fecal samples

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces antibodies as intermediary molecules that mediate between the tapeworm coproantigens in the sample and the detection system. These antibodies specifically bind to tapeworm antigens, enabling detection without direct microscopic visualization, thereby simplifying the diagnostic process while preserving detection capability

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If microscopic methods are used to detect tapeworm eggs or proglottids, then detection is possible, but accuracy is highly dependent on operator skill and expertise

Engineering Contradiction:
Improvedetection accuracyVSAvoidoperator skill dependency
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces operator-dependent microscopic examination with an antibody-based immunoassay system. The antibodies automatically recognize and bind to tapeworm coproantigens, eliminating the need for operator interpretation skills while maintaining high detection accuracy through specific antigen-antibody interactions

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The immunoassay system performs self-detection through the inherent specificity of antibody-antigen binding. The antibodies automatically identify and bind to tapeworm antigens without requiring operator intervention or interpretation, making the test easy to perform while maintaining high accuracy

Inventive Principle:
Principle #25Self-service

3Reliability

If complex stool handling procedures are used for fecal testing, then processing completeness is improved, but the number of steps increases and contact between operator and test material increases

Engineering Contradiction:
Improveprocessing completenessVSAvoidnumber of processing steps
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent extracts and detects tapeworm coproantigens directly from fecal samples using antibodies, eliminating the need for complex processing steps such as concentration, differentiation, and identification. The immunoassay directly detects antigen presence without requiring complete stool processing, reducing both time and operator exposure

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The immunoassay method skips intermediate processing steps required by traditional microscopy, such as stool concentration, smear preparation, and microscopic examination. The antibody-based detection rapidly identifies tapeworm antigens in the original sample, significantly reducing processing time and steps

Inventive Principle:
Principle #21Skipping (Rushing through)

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

Provides a simple, reliable, and efficient method for detecting tapeworm infections with high specificity, enabling early intervention and reducing the risk of spread, while distinguishing between various worm species.

Implementation Method 1

an isolated antibody that can specifically bind to a tapeworm coproantigen

Methodology Applied
Scientific EffectAntigen-antibody binding:

Data Source

PatentEP4671759A2Methods, devices, kits and compositions for detecting tapeworm
Publication Date: 2025.12.31 IDEXX LABORATORIES INC
  • EP4671759A2 patent drawingFigure 1
  • EP4671759A2 patent drawingFigure 2
  • EP4671759A2 patent drawingFigure 3

AI summary

Methods, devices, kits and compositions for detecting the presence or absence of one or more tapeworm coproantigens in a sample are disclosed herein. The methods, devices, kits and compositions of the present invention may be used to confirm the presence or absence of tapeworm in a fecal sample from a mammal and may also be able to distinguish between different tapeworm species and in the presence of one or more infections with helminths (such as roundworm, hookworm, whipworm and heartworm), Giardia and parvovirus. Confirmation of the presence or absence of tapeworm in the mammal may be made, for example, for the purpose of selecting an optimal course of treating the mammal and/or for the purpose of determining whether the mammal has been rid of the infection after treatment has been initiated.