Augmented Face Sketches for CPAP Mask Selection
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Solution Overview
Problem
The current methods for selecting CPAP masks are costly, time-consuming, and abusive, as they require expensive fittings and limited trials due to the inability of existing sizing gauges to accurately discern complex 3D cushion geometries, leading to inefficient selection processes.
Innovation Solution
The method involves generating and associating augmented faces, which are exaggerated facial depictions, with respective CPAP masks to assist in selecting the appropriate mask by displaying these faces on packaging or charts, allowing patients and providers to visually match their facial features with the best-fitting masks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional sizing gauges are used for mask selection, then the selection process is simple and inexpensive, but the measurement precision is insufficient to accurately discern complex 3D cushion geometries
Solution Approach 1:
The patent creates simplified 2D caricature representations that copy and exaggerate the essential 3D facial geometry features. These caricatures serve as visual copies that capture the key distinguishing characteristics of different face types without requiring complex 3D measurement devices, thus achieving accurate mask selection through simplified visual comparison
Solution Approach 2:
The patent transforms complex 3D facial measurement data into 2D visual parameters by creating caricatures with exaggerated features. This parameter transformation allows the essential geometric information to be conveyed in a simpler visual format that can be easily compared against patient faces without requiring sophisticated measurement equipment
2Measurement precision
If multiple mask fittings are performed to ensure proper selection, then the measurement precision improves, but the loss of time and increased cost increase significantly
Solution Approach 1:
The patent performs preliminary facial assessment by creating caricatures that pre-identify the most suitable mask type based on facial geometry. This preliminary visual classification allows providers to narrow down mask options before actual fitting, reducing the number of trial masks needed and accelerating the selection process while maintaining accuracy
3Reliability
If multiple mask fittings are performed to ensure proper selection, then the reliability of mask selection improves, but the object-affected harmful factors increase due to patient discomfort and abuse
Solution Approach 1:
The caricature-based assessment performs preliminary screening to identify the most compatible mask type before actual fitting. This pre-assessment reduces the need for multiple trial fittings that would otherwise expose patients to repeated discomfort from ill-fitting masks, thereby improving reliability while minimizing harm
4Measurement precision
If detailed 3D cushion geometry information is incorporated into sizing gauges, then the measurement precision improves, but the device complexity and cost increase significantly
Solution Approach 1:
Instead of incorporating complex 3D cushion geometries directly into physical gauges, the patent creates 2D caricature copies that represent the essential facial geometry characteristics. These simplified visual representations maintain the ability to discriminate between different mask types while avoiding the complexity and cost of 3D physical models
Data Source
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AI summary
A method of assisting in selection of a particular mask from among a plurality of masks, the method comprising: generating a plurality of augmented faces, each augmented face corresponding to a respective mask of the plurality of masks; and associating each augmented face with a respective mask of the plurality of masks.