The spinal cord is the signal highway from brain to limb; when it is badly injured, commands stop and paralysis follows. A 12-year-old Russian girl traveled to Hangzhou, received a fully Chinese-developed closed-loop spinal cord neural interface , and took voluntary steps three months later — a real window into China’s BCI clinics.
Photo: Tide News, via Global Times (Sep 4, 2026). Please confirm licensing before launch.
How It Works: Amplifying the Surviving Sparks
After a severe spinal injury, motor commands from the brain cannot travel downward and the limbs are paralyzed. Yet the motor neurons and muscles below the injury often remain alive, preserving faint surviving signals.
Surgeons implant multi-contact electrodes at the relevant spinal segment and place an implanted pulse generator (IPG) in the body. An external programmer directs the device over Bluetooth to deliver precise electrical pulses that amplify the weak descending signals , helping them cross the damaged segment and reactivate the leg muscles. The system does not replace the brain — the intention to step still comes from the patient.
It is closed-loop : wireless electromyography (EMG) sensors on the legs report muscle activity in real time, and the software fine-tunes stimulation so it keeps matching the patient’s movement intention, with AI optimizing parameters during rehabilitation. In this case the electrodes were placed through a minimally invasive thoracolumbar incision on the dorsal spinal cord, outside the dura mater — epidural electrical stimulation (EES).
A more advanced version is the brain–spinal interface: a brain-computer interface decodes movement intention directly from the motor cortex and drives the spinal stimulator, enabling thought-controlled movement.
Closed-loop spinal cord neural interface: amplified descending signals plus real-time EMG feedback (Joyful Medical illustration)
Treatment Process: From Assessment to Voluntary Steps
1 Neurological assessment
Multi-dimensional stimulation and EMG testing check whether residual nerve pathways survive and whether the injury is incomplete — the key surgical indication.
2 Multidisciplinary review and admission
Neurosurgery, rehabilitation and biomedical engineering teams review the case remotely, including long-haul flight risk, before agreeing to treat.
3 Minimally invasive implantation
Through a small thoracolumbar incision, multi-contact electrodes are placed epidurally on the dorsal spinal cord with a rechargeable pulse generator; for a child, room is left for growth.
4 Structured rehabilitation
From hip flexion and leg raises in bed to seated leg control, standing weight shifts and step practice, AI and therapists adjust parameters to match intention.
5 Functional conversion
Passive stimulation-driven movement gradually becomes voluntary movement, with the goal of moving from a walker to crutches and greater independence.
A Patient’s Journey: Learning to Step Again in Hangzhou
Vera (a pseudonym), from Moscow, was in a car accident in June 2025 that severely injured her thoracic spinal cord. She lost motor function in her legs and most bodily sensation and relied on a wheelchair. After about eight months of rehabilitation at several Russian centers with little improvement, local doctors saw no hope that she would walk again.
With coordination from the Russian Embassy, her family contacted the International Medical Services Department of the Second Affiliated Hospital, Zhejiang University School of Medicine (SAHZU) . After remote review and a flight-risk assessment, Vera arrived in Hangzhou in April 2026, where Professor Zhu Junming’s neurosurgery team performed the operation. The closed-loop interface is fully Chinese-owned; its core technology comes from Hangzhou-based Jialiang Brain Science, with Professor Xu Kedi of Zhejiang University among the contributors, and more than ten patents have been filed.
Recovery came in stages: signs of leg movement at two weeks; stable standing and returning foot sensation at one month; and by three months she could take voluntary steps with a walker, walking more than ten meters — movement driven by her own intention. In September 2026 she returned to Russia with a home rehabilitation program. She is the first overseas patient with a severe spinal cord injury in China to achieve assisted walking after this implant.
Vera during rehabilitation training, September 2026. Photo: China News Service.
China’s BCI Clinical Landscape
Vera’s case is not isolated. SAHZU reports that more than 20 spinal-cord-injury patients have received the implant, most gaining varying degrees of lower-limb function; in April 2026 it opened Zhejiang’s first integrated ward for epidural stimulation and rehabilitation. In an earlier case, a 61-year-old patient walked more than 100 meters without a walker two months after implantation (Ta Kung Pao).
The NEO system , from Tsinghua University’s Hong Bo team and NeuraMatrix, was approved on March 13, 2026 and granted a national insurance code — described as the world’s first semi-invasive BCI device in clinical use. In 2025, 32 multicenter implants at 11 hospitals all achieved brain-controlled grip for patients with tetraplegia; 22 showed significant hand-score gains after six months.
Xuanwu Hospital’s North Brain One in May 2025 carried out the world’s first linked implant of an invasive BCI, spinal stimulation and an exoskeleton; one year later the patient walked with brace support and regained bladder and bowel control. In August 2026, Wuhan Tongji Hospital completed central China’s first fully invasive ultra-high-throughput cortical implant.
Vera training between parallel bars with a therapist. Photo: Zhang Yuhuan, China News Service (please confirm licensing).
Safety and Real-World Limits
The technology is not for everyone with paralysis. The core requirement is surviving residual pathways and a brain that can still issue motor commands — meaning it is mainly for incomplete spinal cord injury ; patients whose pathways are fully severed can mostly use BCI only to control external devices.
Outcomes vary widely, and walking at this stage is usually achieved with assistive devices or an exoskeleton rather than fully independent walking. A single Chinese team has treated only 20–40 patients, with no large randomized trials or multi-year data, and implantation still carries infection, bleeding and long-term electrode-stability risks. Apart from NEO, most systems remain at the clinical-research stage.
• Established: incomplete spinal cord injury; hand-function restoration in cervical injury (NEO)
• Expanding: post-stroke hemiplegia and ALS communication, mostly in registered or exploratory studies
• Still needed: long-term safety, standardized programming and rehab, and affordable access
Realistic expectations A 2026 Frontiers in Medicine review concludes that EES offers recovery potential, but outcomes depend on surviving pathways, injury level, stimulation parameters and rehabilitation intensity, and multicenter randomized trials and long-term safety evaluation are still needed.
China’s closed-loop spinal interface vs other global approaches
Conditions It Can Treat
• Spinal cord injury paralysis
• Tetraplegia from cervical injury
• Post-stroke hemiplegia
• ALS communication aids
• Motor-function disorders
• Speech-function disorders
Want to know if this technology is right for you? Joyful Medical can help organize your medical records, connect you with the Chinese hospitals and specialist teams using this technology, and assess a treatment plan in China. After you submit your case, our coordinator will contact you. Free Case Evaluation