Lower limb rehabilitation robots can be grouped by training posture into standing, multi-body, and sitting or lying types. They can also be grouped by training principle into exoskeleton and end-effector traction types. Below are the main types.
Standing lower limb rehabilitation robots
These help patients train in a standing or walking position. They come in suspension and wearable forms.
Suspension systems can reduce weight and assist gait training. But the suspension straps must be tied to the body and carry body weight, which can cause compression injuries.
Wearable rehabilitation robots generally require the patient to have some standing ability. Many early and mid-stage patients cannot use them because of insufficient muscle strength.
Multi-body lower limb rehabilitation robots
These combine a standing lower limb rehabilitation robot with a standing bed. The patient can do gait training on different tilt platforms. They are mainly used for mid-stage lower limb rehabilitation. By combining lower limb training with a standing bed, they help the patient move from lying to standing. Early-stage patients with low muscle strength still need a high level of safety protection.
Sitting and lying lower limb rehabilitation robots
These are usually used in a sitting or lying position. They mainly serve early rehabilitation when the patient has low muscle strength. They also fall into end-effector and exoskeleton types.
End-effector robots have a simpler structure, are easier to operate, and cost less.
Exoskeleton sitting and lying robots are often more intelligent. They can support multi-joint coordinated training and custom training trajectory planning based on the patient's condition, which makes personalized rehabilitation plans easier. The downside is a more complex structure and higher development cost and difficulty.
Nurt bedside lower limb rehabilitation system
The Nurt system was independently developed by Estun Medical. It focuses on custom teaching trajectories in three-dimensional space. For early-stage severe patients with individual needs, therapists can design movement trajectories for the patient. This makes training more personalized and precise. Nurt is easy to operate. It has a central wheel locking device that quickly fixes the equipment, the patient, and the bed end position, which saves therapist time. Its interface is simple. The robotic arm supports one-button left and right side switching. Time, speed, and other parameters can be adjusted. After training, the system can return to the initial position or the packing position with one button.
For rehabilitation robot manufacturers, Hansheng Automation machines joint housings, arm links, and structural parts from customer drawings. Single-piece and small-batch orders are supported.
