Saliva Biosensor with Anti-Mucin Pre-Treatment for Drug Detection
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Solution Overview
Problem
Current diagnostic tests for detecting drugs in saliva are unsatisfactory due to low sensitivity and interference from saliva components like mucins, requiring complex and expensive equipment and skilled technicians, and often result in false positives.
Innovation Solution
Integration of a pre-treatment region and detection region in a single device for saliva samples, using magnetizable particles and anti-mucin antibodies to remove interfering components, allowing for rapid, sensitive, and robust analyte detection without extensive equipment or trained personnel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional diagnostic tests are used for detecting drugs in saliva, then the testing can be performed, but the sensitivity is low and false positives occur due to interference from saliva components like mucins
Solution Approach 1:
The patent extracts and removes interfering components (mucins and other saliva components) from the sample before detection. This is achieved through pre-treatment steps that selectively eliminate substances that would otherwise interfere with the detection process, thereby improving measurement precision without sacrificing the ability to detect analytes in saliva.
Solution Approach 2:
The patent applies preliminary action by performing pre-treatment of the saliva sample before the actual detection process. This includes removing interfering components and preparing the sample in advance, which eliminates sources of interference before they can affect the detection sensitivity and cause false positives.
2Measurement precision
If complex extraction and detection methods are used to improve sensitivity, then detection accuracy improves, but the device complexity and cost increase
Solution Approach 1:
The patent merges multiple functions (extraction, pre-treatment, and detection) into a single integrated device. This combination eliminates the need for separate complex equipment for each step, reducing overall device complexity while maintaining high detection accuracy through the coordinated execution of all necessary functions within one system.
Solution Approach 2:
The patent creates a universal device that performs multiple functions: removing interfering components, concentrating analytes, and detecting target substances. This multi-functional approach replaces several specialized pieces of equipment with a single device that handles all processing steps, thereby reducing complexity while preserving detection accuracy.
3Reliability
If multiple pre-treatment steps are performed to remove interfering components, then false positives are reduced, but the time required for testing increases
Solution Approach 1:
The patent performs preliminary removal of interfering components in a single pre-treatment step before detection, which prevents false positives from occurring in the first place. This approach is more time-efficient than performing multiple sequential treatment steps after detection begins, as it addresses interference issues upfront in one operation.
Solution Approach 2:
The patent efficiently extracts and removes interfering components (particularly mucins) in a single pre-treatment operation using specific binding agents. This one-step extraction process achieves the same reliability benefits as multiple treatment steps would provide, but in significantly less time, thereby reducing false positives without excessive time loss.
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
The solution enables accurate and sensitive detection of analytes in saliva with minimal user intervention, reduced sample loss, and minimal contamination risk, suitable for point-of-care testing outside laboratory environments, improving sensitivity and reducing false positives.
Implementation Method 1
contacting the saliva sample with magnetizable particles coated with a molecule capable of specifically or non-specifically binding to components in the saliva sample interfering with detection of the one or more analytes
Implementation Method 2
molecules capable of specifically binding the one or more analytes
Data Source
AI summary
The invention provides a device for detecting drugs of abuse or other compounds in saliva. The invention thus provides a device for detecting the presence of one or more analytes in a saliva sample, comprising: (a) One or more pre-treatment regions for specifically or non-specifically removing at least a part of the fraction of the saliva sample interfering with detection of the one or more analytes; and (b) A detection region comprising a biosensor surface, the surface comprising: molecules capable of specifically binding the one or more analytes; or the one or more analytes and/or analyte analogues.