Implant for Walking After Stroke
Customizable Cooperative Multi-joint Control to Enhance Walking Mobility After Stroke
MetroHealth Medical Center
6 participants
May 16, 2023
INTERVENTIONAL
Conditions
Summary
This is a device study that will evaluate the effect of an implanted stimulator on improving walking in stroke survivors. 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 installing the device and setting the individual up for home use, creating advanced controllers for walking and evaluating the effect of the device over several months.
Eligibility
Inclusion Criteria12
- At least 6-months post stroke
- Age 21 to 75 years old
- Able to ambulate, but does not require the assistance of more than one person
- Walk slower than 0.8m/s during a 10m walk test
- Lower extremity Fugl-Meyer Motor Assessment (FMA) \<= 20
- Reduced peak hip, knee and/or ankle range of motion during stance or swing phases
- Modified Ashworth Scale (MAS) \<= 2 at the above joints during passive flexion and extension
- Innervated and excitable lower extremity and trunk musculature
- Appropriate body habitus (height and weight within acceptable limits as determined by study physician)
- Adequate social support and stability
- Willingness to comply with follow-up procedures
- Neurologically stable as determined by a physician
Exclusion Criteria13
- Non-English speaking
- Significant range of motion limitations (lacking hip extension, etc.)
- History of spontaneous fractures or other evidence of excessively low bone density
- Acute orthopedic problems (severe scoliosis, joint dislocations, etc.)
- Medical complications (cardiac abnormalities, skin breakdowns, uncontrolled seizures, immunological/pulmonary/renal/circulatory compromise, additional neurologic conditions etc.)
- Cardiovascular or pulmonary disease
- Uncontrolled diabetes or hypertension
- Presence of a demand pacemaker or cardiac defibrillator
- Pregnancy
- Complications of stroke that result in an increased risk of falls (apraxia, uncompensated hemineglect, hemianopsia etc.)
- Significant history of repeated falls
- Severely impaired cognition and communication
- Any other medical or psychological condition that would be a contraindication
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Interventions
Implanted Receiver Stimulator (IRS) delivering 8 channels of stimulation. Appropriate for muscle-based (intramuscular or epimysial) electrodes only
Implantable Stimulator Telemeter (IST) that provides 12 independent channels of stimulation with the option of 2 channels of bipolar myoelectric signal recording, or 16 independent stimulus channels. Suitable for muscle-based or nerve cuff electrodes such as the CWRU Spiral, Flat Interface Nerve Electrode (FINE) or Composite-Flat Interface Nerve Electrode (C-FINE).
Locations(2)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT05740540