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Bed Sensor System with Multiple Weight Sensor Units for Urine Accumulation Measurement in Bladder.

Shuhei Noyori, Hiroshi Noguchi, Gojiro Nakagami

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
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    A new bed sensor system non-invasively measures bladder urine accumulation by detecting subtle weight changes in five body areas. This technology could help estimate optimal urination timing for individuals with dementia and urinary incontinence.

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    Area of Science:

    • Biomedical Engineering
    • Gerontology
    • Urology

    Background:

    • Urinary incontinence is a common issue in the elderly, particularly those with dementia.
    • Difficulty sensing or expressing the urge to urinate complicates continence care for dementia patients.

    Purpose of the Study:

    • To develop a non-invasive, unconstrained system for measuring bladder urine accumulation.
    • To estimate the proper timing for urination in elderly individuals, especially those with dementia.

    Main Methods:

    • A novel bed sensor system with five units (head, torso, buttock, thigh, lower limb) was developed.
    • The system measures minute weight changes caused by body posture shifts due to mattress compression.
    • Weight changes were monitored during bladder voiding and urine accumulation in a human subject.

    Main Results:

    • The sensor system detected gradual weight increases in the head and buttock regions as urine accumulated in the bladder.
    • These observed weight changes suggest a correlation with increasing bladder volume.

    Conclusions:

    • The developed bed sensor system shows potential for non-invasively monitoring urine accumulation.
    • This technology may aid in determining appropriate urination times, improving continence care for the elderly, particularly those with dementia.