Visuomotor Prosthetic for Paralysis
Richard A. Andersen, PhD
2 participants
Oct 1, 2013
INTERVENTIONAL
Conditions
Summary
The investigators objective is to run human clinical trials in which brain activity recorded through a "brain-chip" implanted in the human brain can be used to provide novel communication capabilities to severely paralyzed individuals by allowing direct brain-control of a computer interface. A prospective, longitudinal, single-arm early feasibility study will be used to examine the safety and effectiveness of using a neural communication system to control a simple computer interface and a tablet computer. Initial brain control training will occur in simplified computer environments, however, the ultimate objective of the clinical trial is to allow the human patient autonomous control over the Google Android tablet operating system. Tablet computers offer a balance of ease of use and functionality that should facilitate fusion with the BMI. The tablet interface could potentially allow the patient population to make a phone call, manage personal finances, watch movies, paint pictures, play videogames, program applications, and interact with a variety of "smart" devices such as televisions, kitchen appliances, and perhaps in time, devices such as robotic limbs and smart cars. Brain control of tablet computers has the potential to greatly improve the quality of life of severely paralyzed individuals. Five subjects will be enrolled, each implanted with the NCS for a period of at least 53 weeks and up to 313 weeks. The study is expected to take at least one year and up to six years in total.
Eligibility
Inclusion Criteria11
- Pathology resulting in paralysis
- Age 22-65 years
- Able to provide informed consent
- Understand and comply with instructions, if necessary, with the aid of a translator
- Able to communicate via speech
- Surgical clearance
- Life expectancy greater than 12 months
- Live within 60 miles of study location and willing to travel up to 5 days per week
- A regular caregiver to monitor the surgical site
- Psychosocial support system
- Stable ventilator status
Exclusion Criteria21
- Intellectual impairment
- Psychotic illness or chronic psychiatric disorder, including major depression if untreated
- Poor visual acuity
- Pregnancy
- Active infection or unexplained fever
- Scalp lesions or skin breakdown
- HIV or AIDS infection
- Active cancer or chemotherapy
- Medically uncontrolled diabetes
- Autonomic dysreflexia
- History of seizure
- Implanted hydrocephalus shunt
- History of supratentorial brain injury or neurosurgery
- Medical conditions contraindicating surgery and chronic implantation of a medical device
- Unable to undergo MRI or anticipated need for MRI during study
- Nursing an infant or unwilling to bottle-feed infant
- Chronic oral or intravenous use of steroids or immunosuppressive therapy
- Suicidal ideation
- Drug or alcohol dependence
- Planning to become pregnant, or unwilling to use adequate birth control
- Implanted Cardiac Defibrillator, Pacemaker, vagal nerve stimulator, or spinal cord stimulator.
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Interventions
NeuroPort Arrays allow for the local recording of cerebral cortex. The Neural Communication system is primarily composed of two NeuroPort Arrays. The two arrays of one MultiPort device will be placed in the primary motor cortex for recording (Platinum-tipped electrodes); and the two arrays of the additional MultiPort device be placed in the superior parietal lobule for recording (Platinum-tipped electrodes). Each MultiPort device consists of two arrays, each with 100 electrodes in a 10 x 10 configuration, with dimensions 4 mm x 4 mm x 1.5 mm (W x H x D) or 4 mm x 4 mm x 1.0 mm, and a titanium percutaneous connector, 19 mm diameter at the base. Each MultiPort can have a total of 128 active channels (capable of transmitting neural signals to the percutaneous connector) across the two arrays. In our design, we will split active channels evenly between the two arrays resulting in 64 active channels per array.
Locations(3)
View Full Details on ClinicalTrials.gov
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NCT01958086