Lateral Mask Size Gauge for Discomfort-Free Measurement
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Solution Overview
Problem
Existing methods for measuring medical mask sizes, such as using a ruler placed in front of the face, often cause discomfort to the wearer, leading to difficulties in selecting an adequate mask size.
Innovation Solution
A mask size gauge with a trapezoidal shape, featuring a reference position indicating portion placed on the outer lateral side of the eye and a size indicating portion closer to the middle of the face, allowing for mask size selection based on the distance between upper and lower facial reference points without covering the face or eyes, thereby reducing discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a ruler is placed close to the front of the face of a wearer to measure mask size, then the measurement can be performed, but it causes a feeling of discomfort in the wearer
Solution Approach 1:
The measurement approach is shifted from a frontal placement (causing discomfort) to a lateral placement alongside the face. The gauge is positioned at the ear level, measuring vertical distances between facial landmarks (eye, nose, mouth) from the side, thereby eliminating the discomfort of having an object directly in front of the face while maintaining measurement accuracy.
2Measurement precision
If a ruler is placed close to the front of the face of a wearer, then mask size can be measured, but medical personnel hesitate to perform such measurement
Solution Approach 1:
The measurement is performed from the lateral side rather than the front, making the procedure more acceptable to both wearer and medical personnel. The gauge measures vertical distances between facial landmarks (eye, nose, mouth) from the side view, eliminating the awkwardness of frontal placement while preserving measurement capability.
3Measurement precision
If a mask size gauge covers the face or eyes for measurement, then size can be determined, but it causes unnecessary attachment and detachment
Solution Approach 1:
The gauge is positioned laterally at ear level rather than centrally on the face, allowing measurement of vertical distances between facial landmarks without obscuring the face or eyes. This eliminates the need for attachment and detachment operations, saving time while maintaining measurement accuracy.
Data Source
AI summary
A mask size gauge for selecting a size of a mask in accordance with a distance in a height direction between an upper reference part in an upper portion of a face of a wearer, and a lower reference part in a lower portion, includes: a reference position indicating portion indicating that the reference position indicating portion is to be placed at a height position of the upper reference part on an outer lateral side of an eye of the wearer; and a size indicating portion that is located at a position which is closer to a middle of the face than the reference position indicating portion, and that indicates the size of the mask according to a height position of the lower reference part.