title: A telemetric pressure sensor system for biomedical applications.
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.
authors.affiliation: Research and Development Department of Codman and Shurtleff, Inc., Raynham, MA 02767, USA. agingge2@dpyus.jnj.com
authors.forename: Alec
authors.initials: A
authors.lastname: Ginggen
authors.forename: Yanik
authors.initials: Y
authors.lastname: Tardy
authors.forename: Rocco
authors.initials: R
authors.lastname: Crivelli
authors.forename: Toralf
authors.initials: T
authors.lastname: Bork
authors.forename: Philippe
authors.initials: P
authors.lastname: Renaud
mesh_terms: 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