METHOD FOR HUMAN-ENGINEERED QUALIMETRY OF DEVICES OF INDIVIDUAL PROTECTION AGAINST AIR ACOUSTIC VIBRATION Russian patent published in 2014 - IPC A61B5/00 

FIELD: medicine.

SUBSTANCE: assessing objective and subjective characteristics is followed by calculating a human engineering coefficient of a device of individual protection against air acoustic vibration. The characteristics are assessed before and after a work shift in a group of respondents. Assessing the characteristics is ensured by examining the skin condition and vibrotactile sensitivity which provide the basis to determine the following values: vibrotactile desensitisation caused by using the devices of individual protection that is ensured by determining a portion of respondents showing no vibrotactile desensitisation after using the device of individual protection for one shift (x₁), the skin condition under the device of individual protection - a portion of respondents showing no skin redness after using the device of individual protection for one shift (x₂), skin humidity under the device of individual protection - a portion of respondents showing normal skin humidity (x₃). Assessing the subjective characteristics is ensured by determining the following values: mass and dimensions of the device of individual protection - a portion of respondents considering the mass and dimensions to be 'satisfactory' (x₄), fastening effectiveness of the device of individual protection - a portion of respondents considering the fastening effectiveness to be 'satisfactory' (x₅), ease of use (comfort) of the device of individual protection - a portion of respondents considering the ease of use (comfort) to be 'satisfactory' (x₆); ease of unused storage of the device of individual protection considering ease of unused storage to be 'satisfactory' (x₇), occupational non-interference in the device of individual protection - a portion of respondents considering the occupational non-interference with using the device of individual protection (x₈), safe use of the device of individual protection - a portion of respondents considering the safe use to be 'satisfactory' (x₉), combination of the device of individual protection with other equipment elements - a portion of respondents considering the combination of the device of individual protection with equipment samples to be 'satisfactory' (x₁₀), discomfort caused by using the device of individual protection - a portion of respondents noted no discomfort caused by using the device of individual protection (x₁₁), protective properties of the device of individual protection - a portion of respondents noted the high protective properties of the device of individual protection (x₁₂), putting on/off comfort of the device of individual protection - a portion of respondents noted putting on/off comfort of the device of individual protection to be 'satisfactory' (x₁₃). The derived values are used to calculate the human-engineering coefficient of the device of individual protection against air acoustic vibration (k): k=0.15x₁+0.13x₂+0.04x₃+0.07x₄+ +0.1x₅+0.1x₆+0.02x₇+0.12x₈+0.1x₉+0.03x₁₀+0.05x₁₁+0.04x₁₂+0.05x₁₃. The calculated value k provides the basis to assess an ergonomics of the devices of individual protection against air acoustic vibration as low at k<0.4; as satisfactory at 0.4≤k<0.7, good at 0.7≤k<0.9 or excellent at k≥0.9.

EFFECT: method provides the ergonomic analysis of various examples of the devices of individual protection against air acoustic vibration and combinations thereof.

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