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Battery powered BION FES network.

J H Schulman1, J P Mobley, J Wolfe

  • 1Alfred Mann Foundation, Santa Clarita, CA, USA.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 3, 2007
PubMed
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The Alfred Mann Foundation developed a BION microstimulator/sensor network with a master control unit (MCU) and multiple implants. This system offers advanced stimulation, sensing, and communication, optimizing battery life for extended operation.

Area of Science:

  • Biomedical Engineering
  • Implantable Devices
  • Sensor Technology

Background:

  • The need for advanced implantable devices with versatile capabilities is growing.
  • Existing technologies often face limitations in power efficiency and communication range.

Purpose of the Study:

  • To develop a coordinated network of BION microstimulator/sensor implants.
  • To create a system with broad stimulating, sensing, and communication capabilities.
  • To enhance battery life and operational efficiency of implantable devices.

Main Methods:

  • Development of a master control unit (MCU) and a network of BION implants.
  • Integration of custom lithium-ion rechargeable batteries (10 mW-hr).
  • Design of highly efficient circuits for charging, discharging, stimulation, sensing, and communication.

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Main Results:

  • The BION implant network features programmable stimulation parameters (5 µA–20 mA, 7 µs–2000 µs pulse width, 1–4000 Hz frequency).
  • Integrated sensors measure voltage (10 µV–1.0 V), pressure, temperature, DC magnetic field, and distance (up to 20 cm).
  • The MCU can command and interrogate over 800 BION implants 100 times per second (every 10 ms).

Conclusions:

  • The developed BION network offers a robust platform for advanced biomedical applications.
  • High efficiency in power management and communication maximizes implant longevity and utility.
  • The system's capacity to manage a large number of implants enables complex, coordinated functionalities.