AffiliationPolytechnic Institute of Brooklyn
Long College Hospital
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RightsCopyright © International Foundation for Telemetering
Collection InformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
AbstractDuring various pathological states, it is important for the neurosurgeon to know the magnitude of intracranial pressure. It is desirable to have a device small enough to be implanted and left in a trephine hole on a chronic basis, with associated circuitry that would lie beneath the skin surface. An appropriate device is described. The heart of the device is a strain gage bridge that is used to sense differential pressure. The bridge is driven by a 5kHz astable multivibrator, and bridge unbalance frequency-modulates a 100kIlz oscillator. The latter signal is telemetered through the skin via a double-tuned transformer. Power to drive the implant is fed in through a second transformer at 2MHz.
SponsorsInternational Foundation for Telemetering