Design and manufacturing data for an infant upper body physical model for bench testing of assistive devices

Pediatric assistive devices require rigorous preliminary testing for safety and effectiveness before conducting trials with pediatric populations. Existing upper-body physical models for infants are often prohibitively expensive; meanwhile, more affordable alternatives frequently lack anthropometric accuracy or adequate joint mobility. This paper presents design and manufacturing data for a high-fidelity model that closely mirrors the physical properties of a six-month-old infant's upper body. A comprehensive guide to the design process, manufacturing, and assembly is also included. The model consists of the torso, upper arms, forearms, and hands, connected with articulated joints. Validation of the model's segments confirms close alignment with target metrics for size, mass distribution, and joint mobility. By adjusting the design parameters, the infant model can be scaled to represent older pediatric populations. This work offers a scalable framework for researchers to develop physical models for pediatric device testing.