Title :
A Telemetric Pressure Sensor System for Biomedical Applications
Author :
Ginggen, Alec ; Tardy, Yanik ; Crivelli, Rocco ; Bork, Toralf ; Renaud, Philippe
Author_Institution :
R&D, Raynham
fDate :
4/1/2008 12:00:00 AM
Abstract :
A new implantable pressure sensor for long-term monitoring of intracranial pressure is presented. The sensor is powered by telemetry and can be interrogated wirelessly. A capacitive pressure transducer, whose capacitance is converted to a frequency-encoded signal by an application-specific integrated circuit (ASIC), senses the absolute pressure. The pressure-encoded signal, the ASIC input voltage, and onboard calibration parameters are transmitted to an external reading unit. The proposed novel packaging solution is designed for long-term stability and reliability of the sensor. The accuracy of sensor at body temperature is better than 2 mbar across a pressure range of 600-1200 mbar. The sensor is 13 mm in diameter and 4.5 mm in height.
Keywords :
biomedical telemetry; pressure sensors; pressure transducers; ASIC input voltage; application-specific integrated circuit; biomedical applications; capacitive pressure transducer; frequency-encoded signal; intracranial pressure; onboard calibration parameters; size 13 mm to 4.5 mm; telemetric pressure sensor system; Application specific integrated circuits; Biomedical monitoring; Biomedical transducers; Biosensors; Capacitance; Cranial pressure; Intracranial pressure sensors; Sensor systems; Telemetry; Temperature sensors; Biomedical applications; biomedical applications; pressure sensors; sensor packaging; telemedicine; Biomedical Engineering; Diagnosis, Computer-Assisted; Equipment Design; Equipment Failure Analysis; Humans; Intracranial Pressure; Manometry; Sensitivity and Specificity; Signal Processing, Computer-Assisted; Telemetry; Transducers;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.2007.913908
