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工业检漏方法在血泵上的应用 - China Medical Device Manufacturer
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Wed, January 17th, 2018

2005 秋季刊 » 技术新知
工业检漏方法在血泵上的应用

一种通常用于制造业系统的检漏方法首次被用于医疗设备上。柏林Heart公司(www.berlinheart.de) 心脏支持植入物的专业生产商,现在将一种基于氢气法的检漏设备用于血泵的渗漏检测上。

Sensistor Technologies 公司 ( 瑞典, Link ping ; www.sensistor.se ) 开发的 氢气法检漏技术利用氢气快速扩散的性质来检测微小的破口和孔隙。氢是最轻的元素,具有最小的气体粘度。由于氢气的分子速率高,在一定的体积内,它比其他气体扩散得快,更易于通过漏孔。另外,氢原子比氦原子更不容易粘附在物体表面。

Sensistor 公司的氢气法检漏设备最低可以检测出 510-7 毫巴 / 秒的渗漏。作为除氦气检测法外的另一种方法, H2000 系统可以使用 5% 的氢气和 95% 的氮气配成的标准混合气体进行检测。据 Sensistor 公司介绍,检测结束后,检测人员可以方便地将示踪气体吹洗干净。该检测方法所用混合气体无毒、不可燃、无腐蚀性。

柏林 Heart 公司的质量管理与法规事务经理 Dietmar Ries 说 , H2000 的精度和操作简便特性是其入选的核心因素。他解释说:考虑到我们的心脏植入物,我们需要一种精确的、 100% 可信的 检漏设备。我们需要较高的检测准确度,而氢气法保证了这种准确度 ,对我们来说,另一个明显的优点是它操作简便。有了 H2000 ,我们不再依赖固定测量装置了。因此,无论从时间还是空间上都使我们变得更加灵活


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