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A multichannel implantable telemetry system for flow, pressure, and ECG measurementsThe design, principles of operation, and performance of an implantable miniaturized (48 cu cm in volume) multiplex telemetry system for simultaneous measurement of up to eight physiological parameters (including cardiovascular data) are described. Integrated circuits are used to reduce the size, complexity, and cost of fabrication. Power consumption is reduced using recently developed complementary MOS devices. PWM technique is selected as it is relatively easy to implement, lends itself to ICs, and provides an accurate means of transmitting data. The system is totally implantable within the chest of a test animal, with no wire penetrating through the skin. It is shown that the described system permits repeated measurement of the physiological effects of a variety of interventions in awake unanesthetized animals.
Document ID
19750058695
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fryer, T. B.
Sandler, H.
Freund, W.
Mccutcheon, E. P.
Carlson, E. L.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
August 1, 1975
Publication Information
Publication: Journal of Applied Physiology
Volume: 39
Subject Category
Man/System Technology And Life Support
Accession Number
75A42767
Distribution Limits
Public
Copyright
Other

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