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New TPU grades introduced for medical devices

Medical plastics compounder and processor Biomerics used this week's Medical Device & Manufacturing show in New York, June 7-9 to announce the launch of its Quadrathane family of polycarbonate-based thermoplastic polyurethane for the medical device market. The materials are foreseen especially for use in implantable devices. 

Medical plastics compounder and processor Biomerics used this week's Medical Device & Manufacturing show in New York, June 7-9 to announce the launch of its Quadrathane family of polycarbonate-based thermoplastic polyurethane for the medical device market. The materials are foreseen especially for use in implantable devices. 

Biomerics is based in Salt Lake City, UT and from there offers design assistance, injection molding, machining, material compounding and medical device fabrication. The company also recently added a new quality laboratory, two new twin-screw compounders, and equipment for extrusion of polyimide tubing and coated wire.

The new product family, Quadrathane, includes polycarbonate-based thermoplastic polyurethanes (TPUs) available in aliphatic and aromatic formulations. The Quadrathane ALC (aliphatic polycarbonate) grades are non-yellowing and could see use in applications where softening and biodurability are required, such as hemodialysis, drainage, vascular access and pacemaker leads. The ALC grades are available in eight standard body-softening grades and eight standard high-resiliency grades, ranging in durometers from 75A-72D.

The Quadrathane ARC (aromatic polycarbonate) grades are said to be chemically resistant and durable, making them suitable for applications where solvent resistance, resiliency and biodurability are required, such as vascular access and orthopedic devices. All grades are clear, and are offered for extrusion, injection molding and solution processes. Standard grades may be customized with radiopacifiers, colors, antimicrobials or other additives.

The Quadrathane materials are biocompatible and, claims the company, improve on the mechanical properties, chemical resistance and oxidative stability offered by other similar TPUs. All of the grades have passed ISO 10993 and USP Class VI biological testing, including hemocompatibility, cytotoxicity, irritation and sensitization testing.

PlasticsToday's parent company, UBM Canon, organizes and runs the MD&M show.

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