Spinal Cord Injuries
Conditions
Keywords
spinal cord injury, functional electrical stimulation, hand function
Brief summary
The objective of this study is to advance personalized, portable, and non-invasive hand-grasp neuro-orthoses that restore naturalistic grasp functions for those with tetraplegia due to spinal cord injury (SCI), designed around their needs and preferences.
Detailed description
Battelle has developed a novel wearable sleeve that can reanimate a paralyzed limb via Functional Electrical Stimulation (FES) that is controlled non-invasively by the user. Previous work has shown the ability of this sleeve and FES technology to significantly enhance independence and quality of life when controlled by an implanted brain-computer interface, thus now investigators plan to trial use of the high-definition FES system with simpler, non-invasive control mechanisms to expedite translation of this technology into real-world settings. Each participant will complete up to 10 research sessions (\ 1.5hrs each) in their residence or at an alternative location. The study location is restricted to Columbus Ohio and surrounding areas. Participants will be compensated for their time. In Aim 1, investigators will evaluate the ability of a non-invasive, user-controlled FES system to increase functional hand use in the homes of individuals with SCI. The research team will train participants to use the FES system for different functional hand movements and activities they identify as important to them, then measure FES system effectiveness using standardized assessments. In Aim 2, investigators will assess the viability of using the sleeve technology to non-invasively record muscle activity as the participant attempts different functional movements. In Aim 3, human-centric design methodology and contextual inquiry interviews will be employed to understand study participants' needs and preferences for a FES assistive device. This information will determine actions to improve usability and optimize the system for unsupervised home use.
Interventions
DEVICEUser-controlled FES system
Wearable FES sleeve with non-invasive user controls
Sponsors
Ohio State University
Battelle Memorial Institute
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DEVICE_FEASIBILITY
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* ≥ 18 years old * ≥ 12 months post-SCI and medically/neurologically stable * Cervical spinal cord injury (C1-C8); any etiology except neurodegenerative conditions * Unable to grasp objects independently with both hands (tetraplegia) * Manual muscle testing (MMT) scores ≥4/5 for elbow flexion and ≥2/5 for wrist extension * Willing to participate in sessions at home or able to travel to alternate site for study sessions
Exclusion criteria
* Ventilator-dependent (dependent upon mechanical life support due to inability to breathe effectively) * Poorly controlled autonomic dysreflexia (more than one episode in 3 months prior to enrollment) * Moderate to severe spasticity (Modified Ashworth Scale (MAS) \>1+) in the hand, wrist, or forearm * Received a localized injection (e.g. Botox) to hand, wrist, or forearm muscles within past 12 months * Currently participating in physical rehabilitation for upper extremity impairments * Individuals having or requiring any of the following: implanted pacemaker, life supporting/sustaining equipment, or critical non-removable implantable electronic devices such as an insulin pump or neurostimulator. * Presence of any other clinically significant medical comorbidity and/or neurological condition for which participation in the study may pose a safety risk and/or influence results * Presence of the following medical conditions: uncontrolled seizure disorder, active malignancy in the upper extremities, or open wounds/infections in the upper extremities * Individuals whose forearm is determined to be too small or too large to fit the electrode sleeve being investigated * Individuals who are pregnant or plan to get pregnant during the course of the study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Feasibility of FES sleeve as a functional orthosis for activities of daily living | 10 weeks | Semi structured interviews will involve gaining participants opinions on the strengths and weaknesses of the system |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Quadriplegia Index of Function (QIF) | At study completion, 10 weeks | Self-report tool assessing 37 activities of daily living with each task scored from 0 to 4 in order of increasing independence. |
| Change in Graded Redefined Assessment of Strength, Sensibility, and Prehension (GRASSP) after 10 weeks | 10 weeks | Standardized test will assess participant's ability to perform complex grasp tasks: pouring a bottle; opening lids on two sizes of jars; inserting/turning key in lock; manipulating pegs in a pegboard; inserting four sizes of coins into slots; and screwing four sizes of nuts onto bolts |
| Psychosocial Impact of Assistive Devices Scale (PIADS) | At study completion, 10 weeks | Assesses user opinions of assistive devices across 26 items, describing likelihood of device adoption for regular use and psychosocial effects of use on function independence, well-being, and quality of life. Each item is scored on a 7 point Likert Scale from -3 to 3 with higher scores indicating more positive impact. |
| Change in Electromyography (EMG) signal metrics | 10 weeks | Metrics derived from noninvasively recorded electromyography activity as the user attempts functional hand movements |
| Number of serious adverse events | 10 weeks | Assessed by number of incidences |
Other
| Measure | Time frame | Description |
|---|---|---|
| Setup time (minutes) | 10 Weeks | The time it takes to physically don, connect, and calibrate system components |
| Canadian Occupational Performance Measure (COPM) | Week 1, First session | A 9 item assessment to measure perceived occupational performance of self-care, productivity and leisure. COPM uses semi-structured interview questions to identify activities that the individuals wants, needs or is expected to perform. |
Countries
United States
Outcome results
None listed