The war led to the emergence of a large number of people with disabilities, which to some extent promoted the development of wheelchairs. After the First World War, folding wheelchairs in the modern sense were born. And to help disabled veterans of World War II travel, Canadian George Klein invented the electric wheelchair.
 
Founded in 1919, Ottobock began by making prosthetic limbs for veterans of the First World War, and later won many honors such as the Red Dot Award, the iF Award, and the German Design Award. It was also the first manufacturer of wheelchairs in the world and has been supplying wheelchair equipment for the Paralympic Games since 1988. Although the performance of his wheelchair is not as dazzling as that of prosthetics, it is remarkable.
 
The use of wheelchairs can be roughly divided into four categories: the elderly, people with lower limb disabilities, those whose walking is unfavorable to their general condition (heart disease, systemic failure, etc.), and those who are at risk of walking independently (dementia, cerebral palsy, etc.). Relatively speaking, ordinary manual wheelchairs have the widest range of applications, including self-propelled and caregiver-pushed. The rear wheels of the self-propelled model are often more than 20 inches, with a hand push ring, and the brake is placed on the rear tire, which is convenient for the user to directly control, but it is not suitable for the elderly with poor arm strength. The wheelchair pushed by the caregiver will be equipped with a linkage brake device at the rear push handlebar to facilitate the caregiver to control.
 
Ottobock's brand positioning is for people with disabilities, and the design of manual wheelchairs and electric wheelchairs is naturally considered from the perspective of people with disabilities, focusing on basic performance, with relatively single functions and few styles. Due to the large dependence of the disabled on the wheelchair and the long use time, Otto Bock pushes the wheelchair for the caregiver, which is mainly rigid structure, no welding, strong and durable, and also avoids the energy loss caused by the folding place, and is more labor-saving to use.
 
In order to ensure flexibility, Ottobock has set the rear wheels of the manual wheelchair to be removable to reduce the footprint and make it easy to carry. The frame not only supports adjustment, but also installs a reflector to remind the rear to pay attention to the car, and the price is about 3,000 yuan. Its electric wheelchair adopts rear-wheel drive, which is more stable than the flexibility of the front drive wheel, but it can only be purchased offline, and the price is not less than 40,000 yuan. Unfortunately, like Zhongjin, Ottobock did not disclose the details and indicators of motors, controllers, etc.