title: A personalized sensor-controlled microstimulator system for arm rehabilitation poststroke. Part 1: System architecture.
abstract: OBJECTIVE
  For rehabilitation of the poststroke upper limb in seven subjects, an external sensor-based system controls the timing of five to seven microstimulators implanted near radial nerve branches or their motor points to sequentially extend the elbow, wrist, and fingers with thumb extension and abduction, enabled at the subject's own pace. We hypothesize this system will support sequential activation of affected upper limb muscles intended to improve functional recovery.
  
  
  METHODS
  Presented here is a personalized sensor-controlled stimulation system, including its architecture, sensor design, and testing of equipment specific to this study, including coils and sensors.
  
  
  RESULTS
  All electrical and magnetic tests, and safety tests per International Electrotechnical Commission 60601-1 passed. One sensor type displayed a vulnerability to drop.
  
  
  CONCLUSIONS
  The new control system tested safe, met requirements, and allowed each subject to activate the system at their own pace, making the rehabilitation process more acceptable and efficient.
authors: Alfred Mann Foundation, Santa Clarita, CA 91355, USA. danm@aemf.org
authors: Daniel R
authors: DR
authors: Merrill
authors: Ross
authors: R
authors: Davis
authors: Ruth
authors: R
authors: Turk
authors: Jane H
authors: JH
authors: Burridge
mesh_terms: D001132:Arm / Q000502:physiology / Q000503:physiopathology*; D004599:Electric Stimulation Therapy / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D008839:Microelectrodes; D019736:Prostheses and Implants; D020127:Recovery of Function; D020521:Stroke / Q000503:physiopathology; D000071939:Stroke Rehabilitation