• Journal of the Korean Society of Industry Convergence
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• v.26 no.6_3
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• pp.1315-1323
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• 2023

Rehabilitation assistive devices not only assist the rehabilitation therapy and daily life of the disabled and the elderly, but also assist the labor of their caregivers, so various functions are required to improve their quality of life. In this study, a design method considering its practicality is introduced for an active rehabilitation assistive device that can perform both standing and walking assistance by driving various actuators. For this purpose, the force required to assist standing was calculated using statics with the body segmentation method. Also, the overturning stability of the device was verified for various physical conditions and postures. The actuator in the active rehabilitation assistive device was operated by a patient using a graphical user interface in an embedded computer and a touch panel for easy usage. The detailed design was performed for implementation through the help of 3D-CAD and the finite element analysis, and a prototype was produced. Finally, it was proven that the design goal was satisfied by experimental validation.

• Korean Journal of Occupational Therapy
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• v.26 no.4
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• pp.73-84
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• 2018

Objective : The purpose of this study was to promote R&D of toilet design for the disabled by evaluating the Front-entry sitting toilet applied it to actual wheelchair users to examine the possibility of their application as a toilet that is low physical demanding and high satisfaction. Methods : Forty wheelchair users were asked to demonstrate using Front-entry sitting toilet after collecting the general characteristics and their current wheelchair usage information. Musculoskeletal disease risk assessment and user satisfaction were evaluated throughout Rapid Entire Body Assessment(REBA), Quebec Evaluation of Satisfaction with assistive Technology 2.0(QUEST) and subjective opinion questionnaire. Results : Statistical result showed that REBA scores($3.18{\pm}.38$) of Front-Entry Sitting Toilet were significantly lower(z=-5.930, p<.05) than the conventional toilet($6.53{\pm}1.15$). Overall, user satisfaction ratings were high with detailed scores were high in order of durability($4.48{\pm}.62$), safety($4.38{\pm}.63$), necessity($4.33{\pm}.73$) and universal ($4.6{\pm}.61$). Subjective opinion survey showed most were 'it was convenient to not have to rotate(30.8%).' Conclusion : This study found that Front-entry sitting toilet was highly likely to reduce the risk of musculoskeletal disorders and users' satisfactions were high. Through this study, we hope to expand the scope of occupational therapists and contribute to the physical, mental and social health in the daily activities of the people by applying various approaches.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.10
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• pp.415-424
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• 2019

In this paper, a minimum rotation radius was designed and fabricated to overcome the threshold so that elderly or disabled people who have difficulty moving can move and transfer safely and conveniently in a narrow room. In the indoor environment, where the sedentary culture develops, this study aimed to provide convenience for passengers with fracture diseases, geriatric diseases, and other knee and waist diseases. First, links, seats, armrests, covers, motors, batteries, chargers, controllers, etc. were attached to the frame so that they could be moved and lifted indoors. The product design and structure were designed considering the user's environment and physical characteristics, and IoT functions were added. A driving experiment was performed to confirm the operating performance of the manufactured indoor moving and lifting wheelchair. The performance tests, such as continuous running time, turning radius, maximum actuator load, maximum lift height, sound pressure level, minimum sensing distance of the driving aid sensor, interworking of server and app programs, device compatibility, and duty cycle error rate, were performed. As a result of the test, the built-in wheelchair could achieve the performance test target of each item and operate successfully.