Medical Adhesives

Epoxy Technology, Billerica, MA, has completed ISO 10993 testing of its previously Class VI adhesives, as well as the addition of 12 new medical-device-grade adhesives, extending its MED line of biocompatible products to 23. To date, 14 products have undergone ISO 10993-5 cytotoxicity testing, and nine additional products have undergone even more screening, passing all ISO 10993-4, 5, 6, 10, and 11 testing. Included in testing for EPO-TEK® MED-301 was an extended implantation test, from the normal 2 weeks to 12 weeks, which it passed. This specific optically clear epoxy adhesive is often used for molding header systems on many types of devices including pacemakers, ICDs, and neurostimulators.

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PPSU Material

Solvay, Alpharetta, GA, offers polyphenylsulfone (PPSU) for use in medical equipment. The company's Radel® PPSU was recently chosen by Legacy Medical Solutions to optimize a large-format sterilization tray for surgical instruments. The resin's strength-to-weight ratio and ability to withstand high pH cleaners during repeated sterilization cycles and high-temperature autoclaves were key factors in the decision to utilize the material to improve the design, manufacture, and use of the tray. The tray, which measures (59.7 × 38.1 × 14.2 cm), is comprised of a thermoformed transparent lid and an opaque base tray made from Radel® PPSU resin that secures with a metal clamping system.

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Braze Alloys

Morgan Advanced Materials, Windsor, UK, has improved its braze alloys service to support U.S. customers requiring mission-critical components. The braze alloys are manufactured in configurations specific to customers’ requirements. Many applications of braze alloys are used in research and development projects, and information and data is needed quickly for small-run orders. The company has created a dedicated resource to handle inquiries from contract braze houses, while reducing lead times on commonly used alloys. The company can provide precious and nonprecious braze alloys, presintered preforms, and braze inhibitors like Stopyt, which prevents the unwanted flow of molten brazing filler metals.

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Coating Systems

Vapor Technologies, Inc. (VaporTech), Longmont, CO, has launched a new line of coating machines. The VT-i Series PVD coating machines are designed to meet needs for efficiency, cost-control, product quality, and differentiation. These new systems include the VT-500i™, VT-1000i™, and VT-1500i™ (and 3000i ™) systems. The VT-500i is the most compact machine for small-batch manufacturing operations. The VT-1000i system is a compact, higher capacity system for medium-size operations. The VT-1000i machine, which offers 6x capacity, is a PVD and DLC system for medium-volume applications. The VT-1500i system is designed for high-volume, larger manufacturing operations, while the VT-3000i is an updated version of the VT-3000, with a smaller footprint.

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Integrated Circuits

California Eastern Laboratories (CEL), Santa Clara, CA, now offers Tokyo-based THine Electronics integrated circuits (ICs) through CEL's distribution partners. CEL will continue to provide technical support as well as evaluation tools to aid customers’ design-ins of THine products. Products include serializer and deserializer ICs deploying LVDS and V-by-One® HS industry standards. The THine product line includes image signal processor ICs and repeater ICs, which reform a high-speed signal to improve its signal quality and enable gigabit serial signal transmission, such as USB3.1 Gen2, PCI Express Gen2, and SATA Gen2, over longer cables. Applications include wearable devices and medical equipment.

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Automated Surface Analysis

An automated solution for evaluating material surfaces is available from BTG Labs, Cincinnati, OH. The Surface Analyst XA is designed to reduce waste, rework, and recalls when poorly prepared substrate surfaces lead to bonding, coating, sealing, painting, or printing failure. The XA delivers real-time surface condition feedback to manufacturers to ensure that adhesion processes will be successful. The unit deposits a highly purified drop of water on a surface and then measures the contact angle. Automating increases the speed and efficiency by completing inspections on multiple surface points on a material surface at rates of up to 5,000 inspections per hour. As a result, it maps a surface across multiple points, ensuring the consistency and uniformity of surface quality.

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Medical Design Briefs Magazine

This article first appeared in the May, 2019 issue of Medical Design Briefs Magazine.

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