Abstract
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.
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References
Cosman ER, Zervas NT, Chapman PH, Cosman BJ, Arnold MA (1979) A telemetric pressure sensor for ventricular shunt systems. Surg Neurol 11: 287–294
Zervas NT, Cosman ER, Cosman BJ (1977) A pressure-balanced radio-telemetry system for the measurement of intracranial pressure. J Neurosurg 47:899–911
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© 1980 Springer-Verlag Berlin Heidelberg
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Zervas, N.T., Chapman, P.H., Cosman, E.R. (1980). Clinical Application of Telemetric Intracranial Pressure Monitoring. In: Shulman, K., Marmarou, A., Miller, J.D., Becker, D.P., Hochwald, G.M., Brock, M. (eds) Intracranial Pressure IV. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-67543-0_97
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DOI: https://doi.org/10.1007/978-3-642-67543-0_97
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