A telemetric pressure sensor system for biomedical applications.
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.
Ginggen
Alec
A
Research and Development Department of Codman and Shurtleff, Inc., Raynham, MA 02767, USA. agingge2@dpyus.jnj.com
Tardy
Yanik
Y
Crivelli
Rocco
R
Bork
Toralf
T
Renaud
Philippe
P
D001698:Biomedical Engineering / Q000295:instrumentation* / Q000379:methods; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D007427:Intracranial Pressure / Q000502:physiology*; D008365:Manometry / Q000295:instrumentation*; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013686:Telemetry / Q000295:instrumentation* / Q000379:methods; D014159:Transducers