Paper Info
Title
Analysis of biotelemetric interrogation of chronically implantable intracranial capacitive pressure sensor
Abstract
Intractranial pressure (ICP) may increase due to an illness or an injury. Increased ICP causes severe brain damages and leads to life-threatening situations. Therefore, the ICP of patients with possibly high ICP must be monitored continuously. In this paper, we study the design of a subdural ICP sensor consisting of a MEMS capacitive pressure sensor connected to an inductive loop forming an LC circuit. An external LC circuit, whose loop antenna is inductively coupled to the sensor side loop antenna, can detect the resonance frequency of the implanted sensor LC circuit. We analyze for the first time different design aspects and factors affecting the sensitivity of the system to the changes of the capacitance of a pressure sensor implanted inside human head. In simulations, we used anatomical ANSYS Human Body Model. By considering different loss factors and optimizing the system for best sensitivity, we achieved a system with the sensitivity of 5.1 MHz/pF.
Year
DOI
Venue
2014
10.1109/RFID-TA.2014.6934217
RFID Technology and Applications Conference
Keywords
Field
DocType
lc circuits,biomems,biomedical telemetry,body sensor networks,brain,capacitive sensors,loop antennas,microsensors,pressure sensors,telemedicine,mems capacitive pressure sensor,anatomical ansys human body model,biotelemetric interrogation analysis,chronically implantable intracranial capacitive pressure sensor,illness,implanted sensor lc circuit,injury,loop antenna,resonance frequency detection,severe brain damages,subdural icp sensor design,icp sensor,lc tank,biotelemetry
LC circuit,Human-body model,Capacitance,Loop antenna,Microelectromechanical systems,Electronic engineering,Pressure sensor,Engineering,Human head,Induction loop
Conference
Citations 
PageRank 
References 
0
0.34
1
Authors
4
Name
Order
Citations
PageRank
Moradi, E.100.34
Toni Björninen29714.77
Sydanheimo, L.301.35
Ukkonen, L.400.34