BEAR-H Series Lower Limb Rehabilitation Robot
The BEAR-H Series represents MileBot’s flagship lower limb rehabilitation exoskeleton, distinguished by its compliant actuator propulsion system that enables both active and passive training modes. The system targets adult patients undergoing gait rehabilitation following neurological injury or disease.
Product Overview
Marketed as the world’s first rehabilitation exoskeleton to incorporate compliant actuators as primary power units, the BEAR-H Series replaces rigid servo motors with elastic-element transmissions. This design choice addresses a fundamental challenge in rehabilitation robotics: balancing powered assistance with the ability to detect and encourage voluntary patient movement.
The H-series designation indicates “hybrid” training capability—the ability to switch between passive mode (robot-guided movement for early-stage patients) and active mode (patient-initiated movement with robotic assistance). This flexibility supports progressive rehabilitation protocols where assistance is gradually reduced as patients recover motor function.
Key Features
Compliant Actuator Drive System: Proprietary elastic-element actuators provide backdrivable, force-controllable joint motion. The system can sense patient-applied torque and adjust assistance levels in real-time.
6-Axis Powered Movement: Bilateral hip, knee, and ankle joints are independently powered, with additional passive hip rotation joints to enable natural gait patterns.
Integrated Safety Frame: A standing support structure with harness system prevents falls while allowing weight-bearing through the exoskeleton.
Multi-Mode Training: Intelligent mode (AI-adjusted assistance), continuous walking mode, single-step mode, and leg swing mode address different rehabilitation stages.
Real-Time Monitoring: Touchscreen interface displays joint angles, applied torques, step counts, and training duration. Data logging supports longitudinal progress tracking.
Technical Specifications
Designed for adult gait rehabilitation in stroke and spinal cord injury, MileBot’s BEAR-H Series powers 6 bilateral joints for patients 150–190 cm and up to 85 kg in active, passive, intelligent, and single-step training modes.
| Parameter | Specification |
|---|---|
| Powered Joints | 6 (bilateral hip, knee, ankle) |
| Patient Height Range | 150-190 cm |
| Maximum Patient Weight | 85 kg |
| Training Modes | Active, Passive, Intelligent, Single-step |
| Control Interface | Touchscreen tablet |
| Safety Features | Standing frame, harness, emergency stop |
Clinical Applications
The BEAR-H Series is indicated for gait rehabilitation in patients with lower limb motor dysfunction resulting from:
- Stroke (CVA): Post-acute and chronic phase hemiparetic gait training
- Spinal Cord Injury: Incomplete SCI with preserved voluntary motor function
- Traumatic Brain Injury: Motor recovery following acquired brain injury
- Multiple Sclerosis: Gait dysfunction management during stable disease phases
- Parkinson’s Disease: Gait freezing and festination intervention
Clinical protocols typically involve 3-5 sessions per week, with session duration adapted to patient tolerance. The active training mode specifically targets neuroplasticity by requiring voluntary patient effort, which research suggests enhances motor relearning compared to passive movement alone.
Regulatory Status
| Region | Status | Notes |
|---|---|---|
| China (NMPA) | Class II Medical Device | Guangdong FDA |
| CE Mark | Compliant | Per manufacturer claim |
| FDA | Compliant | Per manufacturer claim |
The BEAR-H1 model entered Guangdong Province’s Innovative Medical Device Special Approval Procedure, indicating regulatory recognition as a novel device category within China’s medical device framework.
Frequently Asked Questions
What is the difference between BEAR-H and BEAR-A series?
BEAR-H supports both active and passive training modes, making it suitable for patients across different recovery stages. BEAR-A operates only in passive mode and is designed for early-stage patients who cannot yet contribute voluntary movement.
How long is a typical training session?
Session duration varies based on patient condition and fatigue tolerance. Initial sessions may be 15-20 minutes, progressing to 30-45 minutes as endurance improves. Most rehabilitation protocols recommend 3-5 sessions weekly.
Does the patient need to be able to stand independently?
No. The BEAR-H Series includes an integrated standing frame with harness support. Patients who cannot stand independently can still use the system with full weight support through the frame.
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Sources
Publicly available references used for the data on this page. See data methodology for verification standards.