Wheels of wheelchairs should have brakes on each wheel. Of course, if hemiplegia can only use one hand, they have to use one-handed brakes, but they can also be equipped with extension rods to control the brakes on both sides. There are two types of brakes: (1) Notched brakes. This brake is safe and reliable, but more laborious. 

After the adjustment, it can be braked on the slope. If it is adjusted to level 1, it cannot be braked on the flat ground, which is invalid. ⑵ Toggle brake. Using the principle of levers to brake through several joints, the mechanical advantages are stronger than notched brakes, but the failure is faster. In order to increase the patient's braking force, an extension rod is often added to the brake, but this rod is easy to be damaged, and infrequent inspection will affect safety.