Ginggen Alec, Tardy Yanik, Crivelli Rocco, Bork Toralf, Renaud Philippe
Research and Development Department of Codman and Shurtleff, Inc., Raynham, MA 02767, USA.
IEEE Trans Biomed Eng. 2008 Apr;55(4):1374-81. doi: 10.1109/TBME.2007.913908.
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.
本文介绍了一种用于长期监测颅内压的新型可植入压力传感器。该传感器由遥测供电，可进行无线查询。一种电容式压力传感器，其电容通过专用集成电路（ASIC）转换为频率编码信号，用于感测绝对压力。压力编码信号、ASIC输入电压和板载校准参数被传输到外部读取单元。所提出的新型封装解决方案旨在确保传感器的长期稳定性和可靠性。该传感器在体温下，在600 - 1200毫巴的压力范围内，精度优于2毫巴。该传感器直径为13毫米，高度为4.5毫米。
