材料选择如何影响IV泵故障



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在检查设备故障的原因时,了解在清洁过程中接触消毒剂和其他刺激性化学品时会发生什么至关重要。持续接触许多这些化学物质会损坏设备的结构 - 导致裂纹、银纹、变色和发粘 - 并导致设备性能、寿命和安全性受损。
 

Improving medical device cleanability and durability



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Working together to solve medical device challenges


Molders and brand owners come to us for many different reasons during the developmental journey of a medical device.
•  You may have a totally new device and want the best-fit polymer to optimize its performance advantages.
•  Your current material may not have the chemical resistance and toughness to meet changing hospital disinfectant protocols and more powerful drugs and carrier solvents.
•  Recent regulations may be driving the need for more compliant materials. 
 
Whatever the challenge, working with Eastman lets you access technical expertise and support every step of the way—to help position your device for end-state success.
 
By collaborating early and often during product development and manufacturing, we can help you work with product engineers, toolmakers, and downstream assembly partners to bring your project to market efficiently and profitably.  

Here are a few of the benefits of working together with Eastman:

An innovative solution to medical device housing failure


As healthcare facilities ramp up the use of aggressive disinfectants, traditional plastics are feeling the strain. It's all too common to see device housings become sticky; wear thin in high-touch areas; or crack, crumble, or shatter after only a few months of service. The issue? Devices that were designed just a few years ago are typically made with materials that lack the right combination of impact strength and chemical compatibility with today's stringent cleaning protocols.
 
Eastman Tritan copolyester is an excellent choice for medical housings due to its superior toughness and high chemical resistance. Using Tritan in your device can also help prevent costly repairs and replacements, keeping patients safe and customers happy.
 

Why should you choose Eastman medical grade polymers?

You want to create medical devices and packaging that ensure patient safety and provide long-lasting reliability. To accomplish that, you have to choose high performance medical grade materials. Manufacturers who specify medical grades of Eastman Tritan copolyester not only get access to advanced, high-quality raw materials but also to a strong level of support throughout the regulatory journey to commercialization of a new product.
 
By specifying Eastman medical grade polymers, you get help with:
  • Biocompatibility
  • Sterilization
  • Quality systems
  • Dedicated regulatory support

Overmolding with Tritan

Using overmolded soft-touch materials can provide many functional and decorative benefits to items made from rigid thermoplastics. Eastman Tritan copolyester demonstrates exceptional adhesion with commercial grades of TPE. When selecting the TPE you want to use, make sure it is formulated for use with a copolyester substrate.
Consider these factors for part design:                 
  • Optimize part and TPE thickness for adhesion and dimensional stability. If the TPE thickness is in excess of the Tritan part thickness, you could see warpage when you remove it from the mold. Use a substrate thickness twice that of the TPE.
  • Incorporate mechanical interlocks to improve TPE adhesion and promote part durability. Mechanical interlocks are important for thin TPE layers and very demanding fitness-for-use requirements.

Which medical grade polymer is right for you?


We know that material choice is a crucial component of any medical device or device housing. When you're deciding what medical grade polymer you need for your next project, consider these criteria:
  • Does it make the grade?
  • Will it match the application?
Selecting the right medical grade polymers helps ensure your device complies with quality and biocompatibility standards-and that you have reliable support for regulatory approvals. Different polymers offer different combinations of strengths that help ensure performance in specific medical applications.
 

使用Tritan进行模具设计的技巧


 
Eastman Tritan™共聚聚酯的有效成型有哪些特征?在流程的早期审视设计的所有方面——从概念到二次加工——对于最终的成功至关重要。
 
模具设计审查是该过程中的一个重要步骤,它将有助于确定哪种类型的浇口系统适合您的设备。以下是使用Tritan进行注塑的四个快速模具设计技巧:
 
  • 适当的浇口选择
    为所选树脂选择兼容的浇口样式。大多数传统的冷浇口样式都适用于Tritan共聚聚酯,包括潜伏式浇口、针点浇口、扇形浇口、边缘浇口、射料浇口和隔膜浇口。
 
  • 设计具有良好冷却/热控制的模具
    共聚聚酯需要在整个腔体中进行良好的热控制,以实现最佳加工。
 
  • 在设计模具时考虑排气计划

探索肿瘤药物相容性的复杂难题


降低感染风险和提高患者安全性和舒适度的需求显着增加了对具有更高耐化学性的高性能塑料的需求。许多通常用于给药装置的聚合物根本无法适应现代肿瘤化学疗法。在医疗环境中接触化学品后,由这些聚合物制成的设备可能会在施加或残余应力的情况下出现环境应力开裂或过早出现故障。
 
损坏的设备使患者处于危险之中。此外,当设备性能或生命周期受到影响时,监管机构可能会告诉制造商停止使用某些材料。
 

Eastman Tritan™共聚聚酯 - 对医疗器械的优越属性


Eastman Tritan™共聚聚酯提高了医疗器械和外壳的耐用性和可清洁性标准。不含BPA的Tritan属性包括卓越的透明度、韧性、改进的耐热性和耐化学性等。由于其相对于传统热塑性塑料具有独特的化学成分,因此也易于加工。与其他常用聚合物相比,这种加工和性能特性的组合提供了更大的优势。Tritan有透明和不透明两种配方可供选择,为增强创新设备设计提供了许多益处:
 
Tritan的透明配方
  • 更高的韧性、耐热性、加工性能和设计自由度

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