Wireless Implantable Mandarin Chinese Speech Neuroprosthesis Evaluation

Inclusion Criteria: * Age 18 to 80 years (inclusive), any gender. * Clinically diagnosed with speech disorders, including locked-in syndrome, severe dysarthria, aphasia with preserved auditory comprehension, or late-stage ALS-related language dysfunction, secondary to stroke, traumatic brain injury, amyotrophic lateral sclerosis (ALS), or other motor neuron diseases. * The subject, or the subject with the assistance of their legal representative, is willing to follow the investigator's instructions, adhere to all protocol-specified procedures, and complete all required follow-up. * The subject and their legal representative fully understand the purpose and significance of the trial; the subject voluntarily agrees to participate and signs the informed consent form Exclusion Criteria: * Subjects with any previously implanted metallic objects or devices (e.g., pacemakers, defibrillators, neurostimulators, cochlear implants), except for dental metal implants or implants assessed to have no impact on the trial. * Subjects who have been on long-term anticoagulant or antiplatelet therapy prior to screening, with antiplatelet drugs discontinued for less than 2 weeks before surgery; or subjects with hematological or autoimmune disorders (e.g., aplastic anemia, systemic lupus erythematosus); or subjects with clinically significant coagulation test abnormalities during the screening period. * Subjects assessed by an anesthesiologist to be unable to tolerate anesthesia and surgery. * Subjects assessed by the investigator to have nervous system diseases (e.g., cerebrovascular lesions, intracranial infections, neurodegenerative diseases, epilepsy) or a history of craniocerebral trauma, resulting in severe brain function impairment or marked EEG abnormalities. * Subjects with physiological or pathological conditions that may lead to poor healing of scalp wounds. * Subjects in the acute infection phase or suffering from other severe infections. * Subjects with cognitive impairment or psychotic symptoms. * Subjects with severe dysfunction of vital organs (heart, lung, liver, kidney, etc.), malignant tumors or autoimmune diseases, who are deemed ineligible for this clinical trial by investigators. * Subjects judged by investigators to have an expected survival time of less than 1 year. * Subjects with drug abuse or alcohol dependence. * Pregnant or breastfeeding women, or subjects planning to become pregnant during the trial period. * Subjects currently participating in clinical trials of drugs or other medical devices. * Subjects unable to understand or read Chinese. * Other circumstances under which investigators consider the subject unsuitable to participate in this clinical trial