Biocompatible Material Fits Medical Design Requirements

用于医疗应用的产品面临着针对确保对患者无害的特定限制。一个约束是时间；设备访问或市场问题迫使原型的设计和测试更快。对于一家医疗保健产品制造商的工程师，对灭菌设备的使用有限可能会影响他们需要制作的设计原型迭代次数。但是，制造商使用SL机器来更好地管理可用的设计时间。SL的使用使它们在短短几天内就可以制作数百个零件，并进行各种改动。

But the engineers had to deal with another issue: in medical applications, the stereolithography material must meet several requirements. It must enable the designed part to mimic the final product as closely as possible, in every way. For specific designs, a clear SL material is required either for medical device housings or fluid flow analysis. Lastly, a new requirement emerging for some products is that of biocompatibility.

最近,工程师需要创建一个夹具to hold two products for Gamma sterilization. The task had to be finished within a 10-day window, all the time they had in which to use the Gamma sterilization machine. The fixtures did not need to be sterilized; only the end products held by the fixture needed to be clean. It was important, however, that between the fixtures and the products that there not be any part-to-part contamination, so the engineers needed a biocompatible SL material.

工程师被用来研究DSM SOMOS的SL材料数据表，以在对新产品进行内部测试并转向原型设计之前找到相同的材料当量。在他们的研究中，他们发现了来自Somos的新材料，分水岭XC11122。最近，该材料通过了美国药房（USP）测试最严重的生物学测试，以作为USP VI类材料资格，表明它是生物相容性的。

The classification allows WaterShed XC to be used in applications that range from medical devices to devices that contact skin, such as hearing aids and dental devices. Tests show it produces dimensionally stable parts that are resistant to water and moisture, making it attractive for applications where skin and moisture contact with the part is required. It looked like a good choice for this particular project.

在分水岭XC的情况下，工程师在10天内创建了三局。第一次运行涉及创建60个迭代零件。第二次运行涉及3个接近最终设计的部分。最后，他们为最终设计做了70次。

使用SL和正确的材料，工程师能够在分配的时间内创建各种准确的固定装置并满足兼容性要求。注射成型，工具或其他过程将花费太长时间，并且不允许在成本约束中进行多次迭代。

DSM Somos
www.dsm.com

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提交以下：医疗的，，，，数字制造，，，，材料•高级

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