A GENERIC PACKAGING TECHNIQUE USING FLUIDIC ISOLATION FOR LOW-DRIFT IMPLANTABLE PRESSURE SENSORS.
A GENERIC PACKAGING TECHNIQUE USING FLUIDIC ISOLATION FOR LOW-DRIFT IMPLANTABLE PRESSURE SENSORS.
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使用流体隔离的低漂移植入式压力传感器的通用封装技术。
DOI：
10.1109/transducers.2015.7180964
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Ziaie,B
中科院分区：
文献类型：
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作者：
Kim,A;Powell,CR;Ziaie,B
本文报道了一种通用的封装方法，以减少植入式压力传感器的漂移。所描述的技术通过将压力传感器封装在液体填充的医用级聚氨酯球囊中来使用流体隔离;因此，将其与作为基线漂移的主要来源的周围水性环境隔离。使用商业微机械压阻式压力传感器的体外测试显示，在盐水浸泡测试的100天内，平均基线漂移为0.006 cmH 2 O/天（0.13 mmHg/月），而浸泡18天的非流体隔离压力传感器的平均基线漂移为0.101 cmH 2 O/天（2.23 mmHg/月）。据我们所知，这是植入式压力传感器报告的最低漂移。
This paper reports on a generic packaging method for reducing drift in implantable pressure sensors. The described technique uses fluidic isolation by encasing the pressure sensor in a liquid-filled medical-grade polyurethane balloon; thus, isolating it from surrounding aqueous environment that is the major source of baseline drift. In-vitro tests using commercial micromachined piezoresistive pressure sensors show an average baseline drift of 0.006 cmH2O/day (0.13 mmHg/month) for over 100 days of saline soak test, as compared to 0.101 cmH2O/day (2.23 mmHg/month) for a non-fluidic-isolated one soaked for 18 days. To our knowledge, this is the lowest reported drift for an implantable pressure sensor.