Enhancing Walking and Independence After Incomplete SCI With a Fully Implanted Neuroprosthesis
Louis Stokes VA Medical Center
Summary
This is a device study that will evaluate the effect of an implanted stimulator on improving walking in people with incomplete spinal cord injury. There are two phases in the study: 1) Screening - this phase determines if the individual is a good candidate to receive an implanted system, 2) Implantation, controller development, and evaluation - this phase includes implanting the device and setting the individual up for system use, creating controllers for walking, and evaluating the effect of the device over a couple years.
Description
The purpose of this study is to evaluate the effects of neural stimulation for improving walking after incomplete spinal cord injury. Participants will conduct pre-surgical gait training and then undergo surgery to implant a stimulator and electrodes to sense from and activate muscles used during walking. The device delivers electrical pulses to the nerves causing the muscles to contract to perform functional movements. The system coordinates assistance based on implanted sensors. After receiving the implanted device, participants undergo training to use the device to assist walking. Evaluatio…
Eligibility
- Age range
- 18–75 years
- Sex
- All
- Healthy volunteers
- No
Inclusion Criteria: * Between the ages of 18-75 * Non-ventilator dependent paralysis resulting from injuries such as: cervical/thoracic spinal cord injuries affecting the trunk and/or lower limbs * Impairment classification of AIS B, C, or D (preservation of sensation and/or some motor function) with weakness in trunk and/or lower extremity muscles * Unable to walk faster than 0.8m/s during a 10m walk test * Gait deviation such as reduced peak hip, knee, and/or ankle range of motion during stance or swing phases due to motor impairment * Time post injury greater than six months * Innervated a…
Interventions
- DeviceNNP-LE
Networked NeuroProsthesis - Lower Extremity Configuration (NNP-LE) measuring physiologic command signals and delivering neural stimulation to intramuscular and nerve cuff electrodes for trunk and leg muscle assistance.
Location
- Louis Stokes Cleveland Veterans Affairs Medical CenterCleveland, Ohio