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Biocompatible stock shapes for medical device designers and manufacturers

14 July 2009

Quadrant Engineering Plastic Products has introduced additional standard colours to its Radel PPSU (polyphenylsulfone) Life Science Grade (LSG) portfolio. All Quadrant Radel PPSU LSG stock shapes are certified biocompatible according to ISO 10993, giving designers the confidence that their finished products will successfully past testing, whilst at the same time allowing for faster product development at reduced costs. In addition, Quadrant offers lot traceability of its LSG stock shapes while traceability is typically available only for raw materials and guarantees consistency in formulations.

Standard colours available now include black, natural (off-white), blue, green yellow, grey, brown, rust-coloured and red, whilst custom colours can be produced on request. Quadrant Radel PPSU LSG stock shapes are available globally as rods and sheets in various sizes, allowing manufacturers to optimize yield with minimized waste. Quadrant’s engineering and service capabilities also include design and production of finished parts.

Typical applications for coloured Radel PPSU include orthopaedic trial implants, instrument handles, ferrules for endoscopic instruments, radiation therapy and brachytherapy apparatus components, sterilisation trays, trays for trauma products, biotechnology and laboratory equipment, analytical and diagnostic equipment components.

Radel PPSU is an outstandingly tough thermoplastic with a heat deflection temperature of about 205°C. It offers superior resistance to common sterilisation techniques compared to other engineering plastics and is extremely resistant to repeated autoclaving sterilisation, withstanding more than 1.000 cycles without significant loss of properties.

Other material properties include: high resistance to gamma radiation, excellent dimensional stability and very high impact strength and excellent machinability.


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