A telemetric pressure sensor system for biomedical applications.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 18390328.
- Also identified by DOI 10.1109/TBME.2007.913908.
- No licence information is recorded for this record.
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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.
Medical subject headings
- Biomedical Engineering
- Intracranial Pressure
- Manometry
- Signal Processing, Computer-Assisted
- Telemetry