Clinical Application of Telemetric Intracranial Pressure Monitoring

  • N. T. Zervas
  • P. H. Chapman
  • E. R. Cosman
Conference paper


An implantable intracranial pressure (ICP) sensor for long-term monitoring of epi- or subdural pressures would be very useful. Others have proposed sensor designs, summarized by ZERVAS et al (2). Their major problems have been: drift of calibration; no calibration check in vivo, and non-standardized calibrations. We first proposed a sensor which overcomes these problems by incorporating an internal stop within the sensor, so that the zero-point can be confirmed in vivo (2). We also proposed a pressure-balancing method to determine the pressure calibration of the device in vivo (2). A single-diaphragm version of this sensor is suited for ventricular fluid ICP monitoring (1), and a two-diaphragm version is designed for epidural measurements. Updated clinical results on the latter are described here.


Intracranial Pressure Pressure Calibration Calibration Check Diaphragm Sense Passive Resonant Circuit 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Cosman ER, Zervas NT, Chapman PH, Cosman BJ, Arnold MA (1979) A telemetric pressure sensor for ventricular shunt systems. Surg Neurol 11: 287–294PubMedGoogle Scholar
  2. 2.
    Zervas NT, Cosman ER, Cosman BJ (1977) A pressure-balanced radio-telemetry system for the measurement of intracranial pressure. J Neurosurg 47:899–911PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1980

Authors and Affiliations

  • N. T. Zervas
  • P. H. Chapman
  • E. R. Cosman

There are no affiliations available

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