Peristaltic pumps used in medtech and life-science applications expose plastic tubing to some harsh, continuous treatment. Repeated compression and release of the tubing during pump operation can cause shedding of particles, or spallation, from the inner surface. A new series of medical-grade thermoplastic elastomers (TPEs) from Teknor Apex Co. (Pawtucket, RI) for peristaltic pump tubing provides elasticity over a broad temperature range and withstands the stresses of pump action over time, according to the company.
The new series of Medalist compounds includes clear, translucent and opaque grades for the biotech and pharmaceutical industries, medical infusion systems and dialysis machines. Compared with other TPEs, Medalist compounds exhibit lower levels of spallation, according to Teknor Apex. Their elasticity allows tubing to keep pace with rapid pump action, and the material's durability ensures shape retention over time.
In addition to exhibiting a low level of extractables, Medalist compounds are compatible with a broad range of chemicals, and can be sterilized by E-beam, gamma and ethylene oxide. Specialty grades are available for biopharmaceutical applications with extreme low-temperature requirements.
“The new Medalist compounds for peristaltic pump applications are extremely durable and provide reliable performance over a wide range of service temperatures,” said Ross van Royen, Senior Market Manager of Regulated Products. “They are based on proven technology developed in cooperation with device OEMs and processors and exhibit excellent extrusion rates.”
Teknor Apex produces Medalist compounds in ISO 13485–certified facilities in the United States and Singapore. The new materials are made with FDA-listed ingredients, are certified to ISO 10993-5 for biocompatibility and are REACH SVHC compliant. They are free of DEHP and other phthalates, BPA and latex. Standard grades are ADM-free.