Restoring Motor and Sensory Hand Function in Tetraplegia Using a Neural Bypass System
|The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details.|
|ClinicalTrials.gov Identifier: NCT03680872|
Recruitment Status : Recruiting
First Posted : September 21, 2018
Last Update Posted : November 23, 2021
|Condition or disease||Intervention/treatment||Phase|
|Spinal Cord Injuries Spinal Cord Injury Cervical||Device: Bidirectional Neural Bypass System||Not Applicable|
This study consists of the following three phases: baseline visit, surgical procedure, and restoration sessions.
At the baseline visit, participants will undergo a medical history review, physical and neurological examination, functional assessment of motor and sensory capabilities, a functional magnetic resonance image (fMRI), diffusion tensor image (DTI), and a transcutaneous neuromuscular and transcutaneous spinal cord stimulation test.
Participants deemed eligible for continued participation will then undergo a craniotomy under anesthetic sedation to implant the investigational device. The surgeon will implant microelectrode arrays into the primary motor cortex to record neural activity associated with desired movements and into the primary somatosensory cortex to deliver stimulation in order to provide sensory perception.
While in surgical recovery, participants will have their vital signs monitored, be provided pain medication and antibiotics, and undergo a computed tomography (CT). The participants may also undergo electromyography and microneurography while in recovery. After being evaluated by a physician, the participants will be discharged from the hospital to continue their recovery.
After fully recovering, participants will attend restoration sessions at the Feinstein Institute for Medical Research's Center for Bioelectronic Medicine. Participants will attend up to 3 study sessions a week for approximately 12 months, with each session lasting up to 4 hours. The sessions will progressively focus on identifying neural activity related to desired movements, restoring volitional control of the hand and wrist, restoring tactile perception, and then restoring volitional control and tactile perception of the hand and wrist simultaneously.
During the sessions, participants will have brain signals recorded from electrodes implanted in the brain, receive transcutaneous electrical stimulation to the arm and/or spinal cord, and receive a small amount of electrical current to the electrodes implanted in the brain. The participants may also undergo electromyography and microneurography during some of the sessions.
The study will be considered complete after completion of enrollment (up to 3 participants), completion of study procedures by all participants, and the completion of analysis of identifiable study data.
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||3 participants|
|Intervention Model:||Single Group Assignment|
|Intervention Model Description:||This is a single-cohort early feasibility trial to determine whether an investigational device called the Bidirectional Neural Bypass System can lead to the restoration of movement and sensation in the hand and wrist of up to three individuals with tetraplegia.|
|Masking:||None (Open Label)|
|Official Title:||Restoring Motor and Sensory Hand Function in Tetraplegia Using a Neural Bypass System|
|Actual Study Start Date :||September 30, 2019|
|Estimated Primary Completion Date :||December 2024|
|Estimated Study Completion Date :||June 2025|
Experimental: Spinal Cord Injury Participants
This group consists of individuals with tetraplegia receiving an investigational device called the Bidirectional Neural Bypass System.
Device: Bidirectional Neural Bypass System
These participants will receive the investigational device called the Bidirectional Neural Bypass System. The study intends to use this device to restore volitional movement and sensation to the hand and wrist of an individual during its use in the laboratory.
- Restoration of Movement [ Time Frame: The primary outcome will be assessed over the course of 12 months during the study's restoration sessions. ]
The primary outcome of restoring movement will be evaluated through Graded Redefined Assessment of Strength, Sensibility & Prehension. The performance will be graded on a numeric scale from 0-92, where a higher number indicates a better outcome.
Participants will complete 10 distinct arm, wrist, and finger movements. The movements will be evaluated on a 5-point scale ranging from no movement to normal movement for a total of 0-50.
Participants will be asked to perform a cylindrical grasp, key pinch, and a thumb-index pinch. The movements will be evaluated on a 4-point scale ranging from an inability to position wrist and fingers to able to perform movement with normal force for a total of 0-12.
Participants will be asked to pour water, unscrew lids, place pegs on a board, open a lock, drop coins in a slot, and screw nuts. The movements will be evaluated on a 5-point scale ranging from 0% completed to 100% completed with expected grasp and no difficulties for a total of 0-30.
- Restoration of Sensation [ Time Frame: The primary outcome will be assessed over the course of 12 months during the study's restoration sessions. ]The primary outcome of restoring the perception of tactile sensation of the hand will be evaluated through the 5-Point Likert Scale. Participants will be asked whether they perceive sensation in response to objects being placed against the hand and fingertips. Participants will indicate whether they feel the object by selecting either strongly disagree (1), disagree (2), neutral (3), agree (4), or strongly agree (5). A higher total response score indicates an improvement in outcome.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03680872
|Contact: Richard D Ramdeoemail@example.com|
|United States, New York|
|Northwell Health's The Feinstein Institute for Medical Research||Recruiting|
|Manhasset, New York, United States, 11030|
|Contact: Richard D Ramdeo 516-562-3634 firstname.lastname@example.org|
|Principal Investigator: Chad E Bouton|
|Principal Investigator:||Chad E Bouton, MS||Northwell Health|