Wheelchair seat cushion in the five elements in what industry

It belongs to the medical device industry. Medical devices are apparatus, equipment, instruments, materials or other articles, including their accessories, fittings and software, used for the prevention, diagnosis, treatment, or relief of disease or medical conditions. Wheelchair seat cushions are a type of medical device used to provide wheelchair users with seating support and comfort, and to alleviate discomfort and pain associated with prolonged sitting. The design and manufacture of wheelchair seat cushions requires consideration of many aspects of ergonomics, medicine, and materials science to ensure comfort, breathability, durability, and safety. Wheelchair seat cushions are usually composed of a variety of materials, such as foam, gel, and air cushion, etc. Different materials and structures can provide different support and cushioning effects.