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Telemetry of intracranial pressureA completely implantable epidural pressure telemetry system designed for accurate measurement of intracranial pressure (ICP) is described. The implant device is batteryless, providing unlimited operating life. The described system uses a capacitive pressure transducer with excellent long-term stability. Once detected with the transducer and converted to a frequency with the oscillator electronics, the pressure signal is digitized. It is then telemetered without the possibility of further degradation. After detection with the small external module, the data can be retransmitted by a radio link for complete patient mobility or the energizer signal pickup module can be wired to a bedside readout unit. Continuous data are available from the system so that the dynamic ICP changes reflecting arterial blood pressure can be observed and used for diagnosis.
Document ID
19790057387
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fryer, T. B.
(NASA Ames Research Center Moffett Field, CA, United States)
Corbin, S. D.
(NASA Ames Research Center Moffett Field, CA, United States)
Silverberg, G. D.
(NASA Ames Research Center Moffett Field, CA, United States)
Schmidt, E. V.
(NASA Ames Research Center Moffett Field, CA, United States)
Ream, A. K.
(NASA Ames Research Center Moffett Field; Stanford University, Stanford, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Publication Information
Publication: Biotelemetry and Patient Monitoring
Volume: 5
Issue: 2, 19
Subject Category
Man/System Technology And Life Support
Accession Number
79A41400
Funding Number(s)
CONTRACT_GRANT: NGR-05-020-634
Distribution Limits
Public
Copyright
Other

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