TeleHealth Module

The 10usd TeleHealth Module

• This low cost, multifunction peripheral will provide a means through which the XO can relay valuable medical diagnostic data from the field to doctors many kilometers away.
• It will compose of a three lead EKG providing valuable information about the heart's electrical status, enabling diagnosis of congenital defects and various arrhythmias.
• It will also contain a multipurpose NIR diagnosis tool whose primary function is that of a pulse oximeter, providing information about the oxygen saturation of the blood.
  • See nirdiagnositics.com for other NIR functions

3 Lead EKG

• Multiple Op-Amps pick up, amplify, and filter electrical impulses picked up by near-heart electrodes.
• DyD/DyDisMe has schematics for an EKG using 714 style op-amps.

NIR Diagnosis Aid

• Based on the principles of the differences in absorption of oxygenated and non oxygenated hemoglobin
• 800-1000nm light from LEDs are often used in NIR tools
• Red light is generated from similar LEDs.
  • 5-15c ea
• Light is picked up by photodiodes, converted to current.
• This current is amplified and converted to voltage by a MAX4006 or equivalent chip
  • 1.275 usd

ADC/DAC

• C8051F321 or equivalent chip
  • A/D 5x10b minimum
  • This specific chip provides A/D 13x10b
• alternatively a USB micro-controller may communicate with dedicated ADC/DAC chips via PWM, to lower cost.