Abstract
Background: Hydrocephalus patients are commonly treated by insertion of ventriculoperitoneal shunts, but these have high complication rates. Monitoring of shunt and patient condition can be achieved through measuring intracranial pressure (ICP). Significant zero drift has limited previous developments towards a long-term implantable ICP monitor. We present a new implantable solid-state pressure sensor system appropriate for chronic (lifetime) monitoring of ICP.
Materials and Methods: Initial designs of the proposed ICP system were realised and the pressure sensor catheter underwent bench-top tests to analyse its characteristics. A drift rig was constructed for the long-term analysis of the sensor’s zero drift. The pressure sensor catheter was used to continuously monitor blood pressure in rats.
Results: Three potential design solutions were realised: a standalone sensor, the sensor unit in line with a shunt system, and the sensor unit fully integrated into the shunt valve housing. Initial stability results across 46 days show a maximum drift of less than 2 mmHg and a minimum drift of less than 0.2 mmHg.
Conclusion: Initial experience with the new implantable solid-state pressure sensor system confirms its suitability for chronic pressure monitoring. The device is promising for providing vital information on shunt and patient condition.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Drake JM, Kestle JRW, Tuli S (2000) CSF shunts 50 years on – past, present and future. Childs Nerv Syst 16(10):800–804
Kestle J et al (2000) Long-term follow-up data from the Shunt Design Trial. Pediatr Neurosurg 33(5):230–236
Nulsen F et al (1980) Chronic intracranial pressure monitoring by telemetry: clinical experience. Ann Biomed Eng 8(4):505–513
Czosnyka M, Pickard JD (2004) Monitoring and interpretation of intracranial pressure. J Neurol Neurosurg Psychiatry 75(6):813–821
Fouyas IP et al (1996) Use of intracranial pressure monitoring in the management of childhood hydrocephalus and shunt-related problems. Neurosurgery 38(4):726–732
Lehman LB (1990) Intracranial pressure monitoring and treatment: a contemporary view. Ann Emerg Med 19(3):295–303
Sood S, Ham SD, Canady AI (2001) Current treatment of hydrocephalus. Neurosurg Q 11(1):36–44
Atkinson JR, Shurtleff DB, Foltz EL (1967) Radio telemetry for the measurement of intracranial pressure. J Neurosurg Pediatr 27(5):428–432
Kroin JS et al (2000) Long-term testing of an intracranial pressure monitoring device. J Neurosurg 93(5):852–858
Czosnyka MPD, Czosnyka ZMS, Pickard JD (1996) Laboratory testing of three intracranial pressure microtransducers: technical report. Neurosurgery 38(1):219–224
Miyake H et al (1997) A new ventriculoperitoneal shunt with a telemetric intracranial pressure sensor: clinical experience in 94 patients with hydrocephalus. Neurosurgery 40(5):931–935
Citerio G et al (2004) Bench test assessment of the new Raumedic Neurovent-P ICP sensor: a technical report by the BrainIT group. Acta Neurochir 146(11):1221–1226
Conflict of interest statement
David Budgett, Patrick Hu, and Simon Malpas have a financial interest in Telemetry Research. We declare that no other authors have a conflict of interest.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer-Verlag/Wien
About this chapter
Cite this chapter
Stehlin, E., Malpas, S., Heppner, P., Hu, P., Lim, M., Budgett, D. (2012). Implantable ICP Monitor for Improved Hydrocephalus Management. In: Schuhmann, M., Czosnyka, M. (eds) Intracranial Pressure and Brain Monitoring XIV. Acta Neurochirurgica Supplementum, vol 114. Springer, Vienna. https://doi.org/10.1007/978-3-7091-0956-4_18
Download citation
DOI: https://doi.org/10.1007/978-3-7091-0956-4_18
Published:
Publisher Name: Springer, Vienna
Print ISBN: 978-3-7091-0955-7
Online ISBN: 978-3-7091-0956-4
eBook Packages: MedicineMedicine (R0)