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2026-09-12 00:00 China Clinical Recruitment & Enrollment Translated from EN

StairMed Plans 4-Patient Trial of Wireless Implant for Mandarin Speech

Summary Shanghai-based StairMed has taken its wireless implantable brain-computer interface system into human evaluation for people with speech impairments. The prospective, single-arm trial (NCT07647315) actually began on September 1, 2026, is now recruiting, and plans to enroll 4 participants. Subjects will undergo surgical implantation and brain-control training, followed by an expected 12 months of follow-up recording adverse events, serious adverse events and device deficiencies, along with efficacy data on brain-controlled interaction and communication. Primary completion is expected on August 30, 2028, and the study as a whole on December 30, 2028. The registry record does not disclose the implant site, decoding method or detailed eligibility criteria, and no interim results have been posted, so conclusions on safety and efficacy will have to wait for follow-up data.
Why it matters Most speech neuroprosthesis results so far are built on English-language data, but Mandarin relies on tone to carry meaning, so decoding approaches cannot simply be carried over. StairMed is now testing a wireless implant aimed directly at Mandarin in humans. A planned enrollment of 4 is early-feasibility scale, and there are no decoding accuracy or safety data yet.

BCIwiki (bciwiki.com) — A wireless implantable brain-computer interface system developed by Shanghai StairMed Technology Co., Ltd. has entered human evaluation, testing whether people with speech disorders can achieve brain-controlled interaction and communication. The trial, registered as NCT07647315, was first posted on the US clinical trials registry on June 15, 2026, actually began on September 1, 2026, and currently carries a status of recruiting.

The study uses a prospective, single-arm design with a planned enrollment of 4 participants in China, and the intervention is listed under the code WRS. Enrolled subjects undergo surgical implantation of the device followed by brain-control training, with an expected follow-up period of 12 months. During follow-up the investigators record adverse events, serious adverse events and device deficiencies, and collect efficacy data on brain-controlled interaction and communication. Primary completion is estimated for August 30, 2028, with overall completion estimated for December 30, 2028.

The stated goal is an initial assessment of the safety and effectiveness of the investigational device in achieving brain-controlled effects in the target population, which places it at early-feasibility scale. The enrollment of 4 is an estimated figure rather than a completed actual count.

The registry record does not disclose the implant site, the number of recording channels or the decoding approach, and it does not spell out detailed eligibility criteria. No interim results have been posted, so how the system performs at decoding Mandarin remains unknown.

Compiled by BCIwiki from public sources

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StairMed timeline

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