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超声系统解决非破坏性镍钛诺测量难题 - China Medical Device Manufacturer
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Wed, January 17th, 2018

2009年2月CMDM电子快讯 » 技术新知
超声系统解决非破坏性镍钛诺测量难题

By: Bob Michaels

搭配激光扫描测微仪,UltraGauge+可以提供医用导管的内径、外径以及壁厚数据。

镍钛诺对于制造医用导管的作用日益显著。但由于其独特的晶体结构,一直难以准确测量。现在,LaserLinc Inc.公司(美国俄亥俄州州,Fairborn;www.laserlinc.com)凭借其UltraGauge+超声系统有望解决这一难题。该公司宣称这一超声系统是第一款能对镍钛诺导管进行非破坏性超声测量的实用在线巡检测量方法。

LaserLinc公司联络部主管Robert Wexler表示,测量材料厚度的传统方法是通过测定材料内外壁反射信号的时间差。但是,镍钛诺的晶体结构会“使传统超声壁厚测量出现不一致、不可靠的结果”。

为解决这一难题,LaserLinc找到一种与镍钛诺厚度直接相关的可测量特征,以此获得可靠、一致的测量结果。UltraGauge+超声系统采用On Line Controls公司研发出的上一代超声测量工具为基础,配备最多可连接8枚超声传感器的数字信号处理器,从而对导管、软管及其他产品连续进行在线巡检。搭配激光扫描测微仪,UltraGauge+可以获得医用导管的内径、外径以及壁厚数据。

Wexler表示医疗产品必须遵循严格的规格进行生产,他说:“这些规格出现任何微小偏差都有可能导致整个生产流程失败。通过在生产过程中测量(导管的)内径、外径和壁厚,制造商就能监测加工流程并及时发现问题,从而尽量减少废品数量和停工时间”。除UltraGauge+测量系统外,该公司同时提供UltraLock超声波分析程序,以此简化超声测量系统的设置。作为该公司Total Vu软件的功能组件之一,UltraLock将超声测量流程简化为一个步骤,并且可自动设置软件参数,即使生产过程中产品尺寸有所变化,也能确保测量准确,同时还可对系统进行配置,从而测量多层产品的各个层面。

Wexler介绍说,以塑料、玻璃或者镍钛诺等金属为材料生产医用导管的制造商均可受益于这种超声测量技术。具体应用包括导丝、支架和导管等。


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