Designing a Robotic Hand Prototype for Children with Limb Differences: Integrating User-Centric Approaches

Designing a Robotic Hand Prototype for Children with Limb Differences: Integrating User-Centric Approaches

Code: G-1264

Authors: Meisam Mataji Amirroud © ℗, Mohammadali Ghasemieh

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Abstract:

Introduction

Global statistics highlight the prevalence of limb differences among children aged 0 to 14, emphasizing the need for artificial limb solutions. The challenges encompassing the high costs and technical complexities of active prosthetic limbs, especially for children, hinder widespread adoption and innovation in this domain.

Methods and Materials / Case Report

The project adopted a holistic approach, integrating engineering design, participatory design, and ergonomic-based approaches. In the participatory phase, inputs were gathered from children with limb differences, their parents, and occupational therapists focusing on concerns like accessibility, cost, outdated designs, routine tasks, and social integration barriers. Occupational therapists highlighted the importance of neural activation, reasonable weight, and adaptability with growing children.

Results

Engineering challenges centered on miniaturizing actuators for children's hands and obtaining electromyography (EMG) data from the affected hand. A design was developed with minimal actuators, conductive gel-embedded electrodes for EMG, and 3D-printable parts for adaptability and mass production feasibility. The hand was tailored for interaction with toys, fostering social engagement and imaginative play. However, limitations persisted in intricate finger movement and achieving therapist-directed functionalities.

Conclusion

Three initial designs were formulated, incorporating feedback from therapists and children, ultimately leading to the manufacturing of a confirmed prototype. The finalized design, although meeting several criteria, had limitations in intricate finger movements. The development showcased the potential of user-centric approaches in addressing concerns but also highlighted persistent challenges in realizing precise functionalities as desired by therapists.

Key Words

Robotic hand, Limb differences, Participatory design, Engineering design, Pediatric prosthetics, Occupational therapy, User feedback, 3D printing, Social integration

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