title: Inductive passive sensor for intraparenchymal and intraventricular monitoring of intracranial pressure.
abstract: Accurate measurement of intracranial hypertension is crucial for the management of elevated intracranial pressure (ICP). Catheter-based intraventricular ICP measurement is regarded as the gold standard for accurate ICP monitoring. However, this method is invasive, time-limited, and associated with complications. In this paper, we propose an implantable passive sensor that could be used for continuous intraparenchymal and intraventricular ICP monitoring. Moreover, the sensor can be placed simultaneously along with a cerebrospinal fluid shunt system in order to monitor its function. The sensor consists of a flexible coil which is connected to a miniature pressure sensor via an 8-cm long, ultra-thin coaxial cable. An external orthogonal-coil RF probe communicates with the sensor to detect pressure variation. The performance of the sensor was evaluated in an in vitro model for intraparenchymal and intraventricular ICP monitoring. The findings from this study demonstrate proof-of-concept of intraparenchymal and intraventricular ICP measurement using inductive passive pressure sensors.
authors.forename: Mohammad H
authors.initials: MH
authors.lastname: Behfar
authors.forename: Emily
authors.initials: E
authors.lastname: Abada
authors.forename: Lauri
authors.initials: L
authors.lastname: Sydanheimo
authors.forename: Ken
authors.initials: K
authors.lastname: Goldman
authors.forename: Aaron J
authors.initials: AJ
authors.lastname: Fleischman
authors.forename: Nalin
authors.initials: N
authors.lastname: Gupta
authors.forename: Leena
authors.initials: L
authors.lastname: Ukkonen
authors.forename: Shuvo
authors.initials: S
authors.lastname: Roy
mesh_terms: D002557:Cerebrospinal Fluid Shunts; D004864:Equipment and Supplies; D006801:Humans; D019586:Intracranial Hypertension / Q000175:diagnosis / Q000503:physiopathology; D007427:Intracranial Pressure; D008991:Monitoring, Physiologic / Q000295:instrumentation*