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磁性传感器可装入19-内径活检针 - China Medical Device Manufacturer
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Fri, January 19th, 2018

2008年9月CMDM电子快讯 » 技术新知
磁性传感器可装入19-内径活检针

Ascension Technology公司(美国佛蒙特州,Burlington; www.ascension-tech.com)在不影响跟踪参数的情况下,成功将具有六自由度磁性传感器的直径缩小至0.90mm。该传感器的体积极小,可以完全装进 19-内径活检针的中空管内。

这款 3D Guidance medSAFE 磁性传感器以被动方式检测立体或平面发射器产生的脉冲直流磁场,医疗器械制造商可方便地将其集成到产品中,而且可制造性高。其首要作用是对软组织介入术中采用的针尖末端进行快速、精确、无障碍跟踪。 该传感器的重量不足 0.1 克,可迅速跟踪全部6个方向的活检针移动情况 。这款新型传感器除可以监测活检针和导线的位置外,配备的图像处理软件还可以为成功的介入术提供即时的反馈信息,而无需过度依赖X射线。

新款传感器的性能不受梗塞、复合材料、或不锈钢 (300系列 ) 、钛和铝等医院常见金属的影响。当与Ascension公司的平面发射器配合使用时, 还可解决手术台和轮床中含铁结构产生的失真效应。

过去,工程师们通常不得不以降低对仪器滚转角度的跟踪水平为代价,来缩小磁性传感器体积。据称,这款传感器可以克服这一不足,使内径极小的工具获得最佳导航效果。出于控制需要,该传感器可与其他medSAFE 传感器完全集成,从而确保在器官运动或呼吸循环过程中以适当时机放置活检针。


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