"iCAN'2011" 4-7 Jun 2011 @Beijing,China
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"iCAN'2011" 4-7 Jun 2011 @Beijing,China

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"iCAN'2011" 4-7 Jun 2011 @Beijing,China "iCAN'2011" 4-7 Jun 2011 @Beijing,China Presentation Transcript

  • Capacitive Touch Sensor forFoot Drop Paralysis StimulatorApivan Trungtrakul, Jirawat Jitprasutwit, Ratikorn Chaivattanatham Advisor: Zeng Lertmanorat, Ph.D. THAILAND, Mahidol University iCAN 2011 Beijing China
  • Foot drop@Faculty of Physical Therapy, Mahidol University
  • Cause of foot drop Stroke 20% of survivors They have foot drop. Every year 15 million people suffer a stroke 5 million are left permanently disable1 million Foot Drop per year
  • In ThailandAt less 400,000 Foot Drop
  • Treatments• Tendon transfer (surgery)• Ankle foot orthotic (joint support) Tendon transfer Ankle foot orthotic
  • Electrotherapy: Foot drop stimulator (FDS) Sensor part Control partElectrical stimulator part Nerve & Muscle Contraction!!!
  • FDS in commercial Force sensor Tilt sensorOdstock Bioness L300 WalkAide XFT ElectronicEurope USA USA China1,700 $ 6,500 $ 4,495 $ 1,380 $
  • Our sensor
  • Capacitive technique
  • Simple calculation
  • Sensor benchmark Tilt sensor Force sensor Cap. sensor Power consumption Durability Cost ReliabilityExtra electronic circuit SCORE -1 -1 3
  • FDS system & accessory Controller Capacitive & sensor stimulator Set parameter via software Electrode FDS system
  • Commercial FDS WalkUp FDS 1 adjustable knob 2 interface buttons 3 stimulation modes 300 – 400 USD (Thailand only)
  • Clinical Trial
  • SummaryNew Sensing TechniqueCapacitive touch sensorLow Power Consumption 2.75 nA High durability PCB-based Sensor