Design and Prototype Development of a Reconfigurable Wheelchair With Stand-Sit-Sleep Configurations

Abstract

Many lower limb disabled, elderly subjects prefer wheelchairs as mobility devices. Transferring such subjects from the wheelchair to and from the bed/toilet seat is one everyday challenge. Caregivers provide manual transfer support to such subjects which increase their caregiver dependence. Lower back pains of caregivers, injury incidences during transfer support are related issues regarding manual caregiver transfer support. Long-time wheelchair users are generally exposed to many health problems associated with idle seated posture in a wheelchair for a long time. The wheelchair with a standing facility allows the user to be able to adjust him to different heights giving enhanced navigations in different situations. Thus, reconfigurable wheelchair built-in with sit-to-stand and sit-to-sleep capabilities can be a handy assistive device for a long time wheelchair users. Thus, the paper presents the design and development of a reconfigurable wheelchair with stand-sit-sleep configurations. Key areas focused on maximizing safety, optimizing the size with minimizing the cost and weight of the wheelchair. The developed model will help in improving the functional capabilities of wheelchair users allowing enhanced independence and quality of life (QoL).