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采用超声波技术改善涂层功能 - China Medical Device Manufacturer
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Wed, January 17th, 2018

2010年3月CMDM电子快讯 » 技术新知
采用超声波技术改善涂层功能

超声喷嘴将高频声振与精密的空气定型技术相结合,形成微米级液滴喷雾。
位于美国纽约州米尔顿市的 Sono-Tek公司(www.sono-tek.com)将其超声波技术进一步扩展应用到超薄膜功能涂层系统,这种涂层可用于各种医疗器械,例如导管、气囊、整形植入物、内镜仪器、起搏器、心脏瓣膜及相关产品。随着功能涂层配方的不断改进、仪器尺寸日益缩小,对于各种能够有效形成表面覆盖良好、材料均匀、粘附均衡和耐磨损涂层的设备也是需求猛增。据Sono-Tek公司介绍,与压力喷嘴系统及其它传统涂层方法相比,超声喷嘴系统的涂层均质性及粘附性更为出色。

Sono-Tek超声喷嘴过去一直用来喷涂药物洗脱支架,现在还可用于喷涂THF、甲苯、PTFE、氯仿、碳纳米管、凝血酶、肝素、硝酸银、IPD、硅酮、帕利灵、酶和EDTA溶液或悬浮液至其它材料,用作定向持久或缓慢释放产品。

超声喷嘴将高频声振与精密的空气定型技术相结合,形成柔软密集的微米级液滴喷雾。根据喷洒频率不同,液滴大小介于18-49微米之间。

该公司列举的超声涂层系统优点包括:大大节约了涂层材料、精确控制喷雾形状和流速、最大程度地减少喷涂过量现象、可靠的非堵塞性能、紧密的液滴分布,且无需编织结构便可穿透并粘附于复杂的几何形状。

本文最初发表于European Medical Device Technology 2010年2月刊英文版上。

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