Brush Biopsy Device for Mucosal Antibody Detection
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Solution Overview
Problem
Current methods for collecting local IgE in the nose, such as nasal lavage and surgical biopsy, are invasive, impractical for office settings, and unsuitable for pediatric patients, while existing methods for brush biopsy have not been used for antibody testing.
Innovation Solution
A method and device for obtaining a brush biopsy sample from the mucosal surface of the inferior turbinate, allowing for the detection of total IgE or antigen-specific IgE using standard methods, which is non-invasive and suitable for both adult and pediatric patients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If nasal lavage is used to collect local IgE, then IgE in mucus can be detected, but the procedure is difficult to perform, uncomfortable for patients, and has high technical variability
Solution Approach 1:
The invention extracts only the essential function of collecting mucosal material for antibody detection, removing the complex lavage procedure. A simple brush biopsy device is used to directly collect epithelial cells and mucus from the nasal mucosa, eliminating the need for fluid instillation and complex washing procedures while maintaining detection capability
Solution Approach 2:
The brush biopsy device is designed as a disposable, single-use instrument that is simple, inexpensive, and easy to handle. This eliminates the need for complex reusable equipment requiring sterilization and maintenance, making the procedure easy to perform in office settings while ensuring sample integrity for IgE detection
2Measurement precision
If surgical biopsy is used to detect epithelial IgE, then comprehensive antibody detection is achieved, but the procedure is invasive and not practical for office settings
Solution Approach 1:
The invention applies local quality by targeting only the specific region of the inferior turbinate epithelium where IgE is present, rather than performing extensive surgical biopsy of large tissue samples. The brush selectively collects material from this localized area, achieving diagnostic accuracy with minimal intervention
Solution Approach 2:
The invention replaces the mechanical surgical biopsy system with a gentle brush biopsy mechanism. Instead of using scalpels, forceps, and complex surgical instruments that cause trauma, a soft brush gently sweeps the mucosal surface to collect cells and mucus, eliminating surgical invasiveness while maintaining sample quality for IgE detection
3Ease of operation
If conventional brush biopsy is used for ciliary study, then mucosal surface sampling is achieved, but the method has not been validated for antibody testing
Solution Approach 1:
The invention performs preliminary action by validating the brush biopsy method specifically for antibody detection before clinical application. The device and procedure are optimized and tested to ensure adequate collection of epithelial cells and mucus containing IgE, establishing protocol standards that guarantee reliable antibody detection results
Solution Approach 2:
The invention extends the utility of brush biopsy from solely ciliary ultrastructure study to multiple functions including viral culture, mucosal cell collection, and antibody detection. The same simple device serves multiple diagnostic purposes, making it a universal tool for nasal mucosal analysis while maintaining ease of operation
Data Source
AI summary
A method to detect local antibodies such as antigen-specific IgE via a brush biopsy specimen of a mucosal surface of a subject is disclosed. The method is easily performed in an office setting on both adult and pediatric patients. Also disclosed is a brush device specially designed for harvesting materials from a mucosal surface such as the medial surface of the inferior turbinate.