不完全脊髓损伤 (SCI) 后的脑控脊髓刺激步行疗法

Participants will receive brain-computer interface (BCI)-triggered transcutaneous spinal cord stimulation (tSCS) combined with activity-based training 3 to 4 times per week. The BCI system detects movement attempts and triggers stimulation delivered through the Neostim 5 spinal cord stimulator. Participants will participate in the therapy for up to 12 months.

Participants will receive brain-computer interface (BCI)-triggered transcutaneous spinal cord stimulation (tSCS) using the Neostim 5 spinal cord stimulator during activity-based training sessions. The BCI system detects movement attempts and triggers delivery of transcutaneous spinal cord stimulation. Intervention sessions will occur 3 to 4 times per week throughout the study intervention period.

• Neostim 5 Spinal Cord Stimulator

Lower Extremity Motor Score (LEMS) to assess lower limb muscle function following the American Spinal Injury Association Impairment Scale (ASIA) guidelines. The LEMS evaluates motor function on a scale of 0 (no motor function) to 5 (full motor function).

Safety will be reported as the incidence of treatment related AEs as assessed by the study doctor

Safety will be determined by number of subjects that complete the study, as designed.

This is a test of short-distance walking function. The subject will be asked to walk at a comfortable walking speed (CWS) and maximum walking speed (MWS) on a ten-meter straight walkway. Time is measured in meters per seconds.

The object of the test is to walk as far as possible for 6 minutes. The subject will walk at a normal pace around a marked course for 6 minutes. The subject may stop to rest and begin again at will. The distance covered indicates aerobic fitness. The further a subject walks, the better their cardiovascular condition. Units are measured in meters.

The Timed Up and Go test or TUG test is used to help evaluate mobility. It measures, in seconds, how long it takes subjects to stand up, walk 10 feet, turn around, walk back, and sit down.

BBS is an assessment to determine balance. The BBS consists of 14 items scored on a 5-point ordinal scale, ranging from 0 to 4 (0 indicates lowest level of function; 4 indicates highest level of function), with a maximum total score of 56.

The Modified Ashworth Scale is a 6-point scale. Scores range from 0 to 4, where lower scores represent normal muscle tone and higher scores represent spasticity.

The Pendulum Test will be used to measure muscular spasticity. During the pendulum test, the participant will be lying on a therapy mat with the lower leg hanging off the edge of the mat. A member of the study staff will support the participant's extended lower leg and then release the leg allowing it to swing freely. This test will be video recorded and the movement of the knee joint will be measured using software on the computer. Muscular spasticity will be calculated by the number of the Relaxation index (R1 and R2) and compared to norms.

WISCI II is an ordinal scale using a rank ordering along a dimension of impairment, from the level of most severe impairment (0) to least severe impairment (20) based on the use of devices, braces and physical assistance of one or more persons. The order of the levels suggests each successive level is a less impaired level than the former.

SCIM III assesses performance in activities of daily living Scores range from 0-100, where a score of 0 defines total dependence and a score of 100 is indicative of complete independence.

ISCI-QOL consists of three single items on satisfaction with life as a whole, physical health and psychological health using a 0-10 scale where 0=complete dissatisfaction; 10=complete satisfaction.

RNL is a self-report questionnaire that assesses a person's satisfaction with performance in life activities. The RNL index assesses mobility, self-care, daily activity, recreational activity, and family roles.

The RNL includes 11 declarative statements and a composite score will be calculated. Minimum Score = 0; Maximum Score = 100. Higher scores indicate greater reintegration.