Upper and Lower Limb Active-Passive Training System

Ruihan Medical’s Upper and Lower Limb Active-Passive Training System extends the company’s brain-computer interface technology platform to full limb rehabilitation. The system integrates BCI-triggered control with motorized limb movement apparatus, enabling coordinated upper and lower extremity training for patients recovering from stroke and other neurological conditions.

Product Overview

Designed as part of Ruihan Medical’s closed-loop neural rehabilitation ecosystem, this system addresses the need for coordinated limb training in stroke recovery. The active-passive training paradigm allows patients at different recovery stages to benefit from appropriate levels of assistance, from fully passive movement for early-stage patients to active resistance training for those further along in rehabilitation.

The system can operate independently or integrate with Ruihan’s BCI headset to enable brain-controlled movement initiation, creating a neural feedback loop that promotes motor learning and cortical reorganization.

Key Features

Designed for stroke and spinal cord injury rehabilitation, Ruihan Medical’s active-passive limb system responds to BCI commands and generates intelligent personalized training prescriptions.

• BCI Integration: Responds to brain-computer interface commands for active movement initiation when used with compatible EEG headset
• Dual Training Modes: Supports both active and passive training protocols for upper and lower limbs
• Intelligent Prescription System: Automatically generates personalized training protocols based on patient assessment data
• Real-time Monitoring: Displays exercise prescription, physiological data, and training progress during sessions
• Safety Management: Analyzes patient fatigue and spasm levels with automatic alerts for abnormal conditions
• Third-party Compatibility: Integrates with external upper limb robots for fine motor tasks including writing exercises

Technical Specifications

With active, passive, and combined training modes across upper and lower extremities, this NMPA Class II system integrates BCI input and real-time fatigue detection.

Clinical Applications

The system is indicated for motor rehabilitation in patients with:

• Subacute and chronic phase stroke affecting limb function
• Spinal cord injury with lower motor neuron preservation
• Central nervous system diseases causing motor impairment
• Traumatic brain injury with limb dysfunction
• Peripheral nerve injury affecting extremity movement

Clinical deployment supports the “assessment-training-monitoring-reassessment” rehabilitation cycle, with standardized protocols that can be customized based on individual patient needs and progress.

Regulatory Status

The product received NMPA Class II medical device registration as part of Ruihan Medical’s expanding portfolio of BCI-enabled rehabilitation systems.

Frequently Asked Questions

How does the active-passive system differ from traditional rehabilitation equipment?

Traditional motorized rehabilitation devices typically operate in fixed patterns regardless of patient input. Ruihan’s system can respond to brain-computer interface signals, meaning patients who attempt to initiate movement mentally can trigger the mechanical assistance. This active engagement promotes neural plasticity more effectively than purely passive movement.

Can the system be used for both arms and legs simultaneously?

The system supports coordinated upper and lower limb training protocols. Training prescriptions can be configured for simultaneous or sequential limb exercises depending on the rehabilitation goals and patient tolerance. The intelligent prescription system helps clinicians design appropriate protocols.

What patient populations are suitable for this device?

The system is designed for patients with motor dysfunction from central nervous system conditions, primarily stroke survivors in subacute and chronic recovery phases. Patients should have sufficient cognitive function to participate in training protocols, though the passive mode can benefit patients with limited active movement capability.