Reusable Menstrual Pad with Embedded Lateral Flow Diagnostics
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Solution Overview
Problem
Current solutions for cervical cancer screening in developing regions are inaccessible, unaffordable, and invasive, often requiring laboratory infrastructure, trained personnel, and proper sanitation, which are lacking in these areas, leading to delayed detection and high mortality rates from cervical cancer.
Innovation Solution
A reusable menstrual pad with embedded lateral flow immunoassay diagnostics that processes menstrual blood to detect HPV markers, providing a cost-effective, user-friendly, and eco-friendly solution for at-home testing, eliminating the need for laboratory facilities and trained personnel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional pap smear testing is used for cervical cancer screening, then diagnostic accuracy is improved, but cost and accessibility deteriorate
Solution Approach 1:
The patent employs disposable test strips containing lateral flow immunoassay technology that can be easily manufactured at low cost and disposed of after single use. These strips detect HPV markers in menstrual blood without requiring expensive laboratory equipment or trained personnel, making the diagnostic tool affordable and accessible for use in resource-poor settings while maintaining adequate diagnostic accuracy
Solution Approach 2:
The patent enables self-service diagnostic testing by allowing individuals to perform HPV screening at home using the provided test strips and collection kits. Users can collect their own menstrual blood samples and process them without requiring laboratory infrastructure or trained personnel, thereby eliminating barriers related to cost, accessibility, and geographical location while maintaining diagnostic capability
2Measurement precision
If laboratory-based diagnostic testing is implemented, then measurement precision is improved, but device complexity and infrastructure requirements worsen
Solution Approach 1:
The patent extracts the diagnostic testing capability from complex laboratory infrastructure and relocates it to simple, portable test strips that can be operated individually. The lateral flow immunoassay technology is condensed into a handheld format that requires no external equipment, power sources, or trained personnel, thereby eliminating the need for laboratories while preserving diagnostic precision through optimized assay design
Solution Approach 2:
The patent replaces complex mechanical laboratory systems with a simplified immunological assay based on lateral flow technology. Instead of requiring sophisticated instrumentation for sample processing and analysis, the system uses antibody-antigen interactions and capillary action to achieve diagnostic results, substituting mechanical complexity with biochemical simplicity that can be performed manually
3Measurement precision
If invasive sampling methods are used for cervical cancer screening, then diagnostic accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The patent uses menstrual blood as an intermediary sample medium that naturally flows from the body without requiring invasive procedures. Instead of directly sampling cervical cells through painful and complex methods, the system detects HPV markers in menstrual blood, which serves as a convenient and non-invasive proxy that maintains diagnostic accuracy while dramatically improving ease of operation and user acceptance
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 routine, accurate, and affordable HPV screening, reducing the burden of cervical cancer by providing a low-cost, accessible, and sustainable diagnostic tool that can be used by menstruating individuals in resource-poor settings, thereby reducing mortality rates and promoting menstrual health.
Implementation Method 1
A reusable menstrual pad with embedded lateral flow immunoassay diagnostics that processes menstrual blood to detect HPV markers
Data Source
AI summary
Reusable garments and personal care products that have diagnostics embedded therein can be a 2-in-1 diagnostic and hygiene tool. In one example, a reusable menstrual pad with diagnostics embedded therein can serve as a low-cost detection tool for Human Papillomavirus (HPV) in developing regions. The pad, e.g., cloth-based sanitary napkin, can house a diagnostic mechanism so when menstrual blood hits the surface of the pad while in use, the mechanism—or testing strip—can process the blood to test it for HPV markers. The pad can address a complex problem by leveraging the monthly frequency of menstrual cycles to routinely test for HPV.