Biocidal Filter Facemask With Adjustable Fit and Airflow Venting
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Solution Overview
Problem
Conventional masks suffer from poor fit, discomfort, and inefficiency in filtering airborne pathogens and allergens, with issues such as non-adjustable straps causing skin pinching, inadequate sealing, and restricted airflow, and lack of biocidal protection.
Innovation Solution
A facemask design featuring a continuous strap system with tri-directional force adjustment, a replaceable biocidal filter, and airflow channels directing exhalations backward, combined with additive manufacturing for customization and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional masks use non-adjustable straps, then manufacturing is simple, but comfort deteriorates due to skin pinching and poor fit
Solution Approach 1:
The mask incorporates an adjustable strap system that allows dynamic modification of fit and tension to accommodate different face shapes and sizes, transforming the static conventional strap into a dynamic, adaptable component that maintains comfort across diverse users
Solution Approach 2:
The invention modifies the strap system parameters including length, tension, and attachment points to optimize comfort while maintaining secure fit, allowing continuous adjustment of physical parameters to match individual wearer requirements
2Reliability
If conventional masks use simple filtration, then device complexity is low, but filtration efficiency deteriorates in capturing airborne pathogens
Solution Approach 1:
The filtration system is divided into multiple functional layers including pre-filtration, main filtration, and biocidal treatment layers, with each segment performing a specific function to progressively enhance pathogen capture while managing overall system complexity through modular design
Solution Approach 2:
The mask employs composite filtration materials combining physical barrier properties with biocidal agents, creating a multi-functional filter structure that achieves superior pathogen capture efficiency through the synergistic combination of different material properties
3Reliability
If conventional masks restrict airflow, then filtration is improved, but breathing comfort deteriorates
Solution Approach 1:
The mask design applies different properties to different regions: high-filtration areas are positioned where airflow is concentrated, while more breathable regions are located in areas requiring less filtration, creating a spatially differentiated structure that simultaneously optimizes both filtration and breathing comfort
4Reliability
If conventional masks lack biocidal protection, then device simplicity is maintained, but protection against pathogens deteriorates
Solution Approach 1:
The invention merges the physical filtration function with biocidal protection by integrating antimicrobial coatings and biocidal agents directly into the filter structure, combining multiple protection mechanisms into a unified system that enhances pathogen protection without proportionally increasing complexity
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 facemask provides a snug, comfortable fit with enhanced filtration and airflow management, effectively capturing pathogens and allergens while allowing exhaled air to vent safely, thus protecting both the wearer and others.
Implementation Method 1
at least one airflow intake in a lower front section thereof, the at least one airflow intake capable of directing inward airflow to strike an interior air filter at an oblique angle
Implementation Method 2
The air filter can be replaceable and/or biocidal
Implementation Method 3
a facemask that includes a filter insert designed to protect the wearer, the patient and others in the vicinity of the wearer, from airborne pathogens
Data Source
AI summary
A facemask assembly can include an interior air filter that is replaceable and/or contains biocidal elements. The filter can capture exhaled H2O to activate silver ions creating a biocidal environment. In some embodiments, at least part of the facemask is made via additive manufacturing. A facemask frame assembly can create a pleated filter to increase surface area and bring the filter material closer to the mouth and nose. The facemask can include a facial skirt customized to the facial geometry of the wearer. The facemask can have a permanently sealed filter than can withstand boiling and autoclaving temperatures so the mask system can be sterilized without disassembly. In some embodiments, the facemask has a visible display of how many times the facemask has been sterilized. In some embodiments, the mask includes a RFID device that can transmit how many times the facemask has been sterilized.