ISSN : 1796-2021
Volume : 2    Issue : 3    Date : May 2007

Stimulating and Sensing Network Inside the Human Body
J. H. Schulman
Page(s): 73-78
Full Text:
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The Alfred Mann Foundation is developing a network of up to 850 injectable devices that have
stimulating, sensing and communication capabilities. Each of the devices is coordinated via radio
signals a hundred times a second by an external small module. All the devices are powered by
lithium-ion rechargeable batteries. The stimulating, sensing, and communication circuits are
designed to be highly power efficient to maximize battery life. The stimulator can be programmed to
deliver pulses in the range: 5 µA to 20 mA, 7 µs to 2000 µs, and frequencies up to 4000 Hz.
Bursting, ramping, and other stimulation features are included. The voltage sensor covers the range
10 µV to 1.0 V with bandpass filtering and data analysis. The implant also contains sensors for
pressure, temperature, DC magnetic field, and distances between implants.

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