MATERIALS | MEDICAL COMPOUNDS
Right: Evonik’s Vestakeep i4 3DF biomate- rial filament based on PEEK was used in a 3D-printed spinal implant created by US-based technology company Curiteva
equipment. For example, a foot pedal switch in three different colours (blue, yellow, and grey) is made with Eurotec’s Tecomid 25% glass fibre reinforced polyamide (PA6) that contains a perma- nent antistat to dissipate static charge. The latest from Polyplastics (part of Daicel
Corporation) is the Duracon POM (polyoxymethyl- ene or acetal) PM Series for medical applications. The company has supplied TOPAS cyclic olefin copolymer (COC) for medical and healthcare uses for decades and, as a POM supplier for other markets, has now added POM to its polymers available for medical applications. One product is a standard viscosity grade (PM09S01N) and a second, high-flow grade (PM27S01N) will enable wall-thinning, miniaturisation, and lightweighting, says the company. The materials can be sterilised under hot steam and EtO sterilisation conditions. The compounds meet global market regulatory compliance requirements and can be used in a wide range of applications, including drug delivery. Durable, high-strength polymers are used as an
alternative to metals for medical implants. Besides use in conventional converting processes such as injection moulding, polymer compounds are being designed for 3D printing, which can allow produc- tion of patient-specific designs for implants. “In trauma applications, for instance, 3D printed solutions offer an enormous time advantage over traditionally manufactured medical devices,” says Marc Knebel, Head of Medical Systems at Evonik. “It is conceivable that patient-specific solutions can be manufactured within two or three days, signifi- cantly improving the recovery phase.” Evonik’s latest is a polyether ether ketone (PEEK)
Vestakeep filament with either 12% or 20% carbon-fibre content for use in 3D-printed medical implants, such as bone plates and other recon- structive prostheses. Benefits include the ability to define the alignment of the carbon fibres. Pharmaceutical drugs can be compounded in
polymers and formed into various shapes for use in extended-release drug delivery. Innovative research in this field continues. Ethylene-vinyl acetate (EVA) copolymers, for example, can be used commercially to create implants for drug delivery in several therapeutic areas such as ophthalmology, oncology and women’s health, says global material provider Celanese. Celanese is collaborating with companies like Nanoform, Alessa Therapeutics and Glaukos to enable innovative continuous dosing solutions that can improve patient compliance and outcomes.
CLICK ON THE LINKS FOR MORE INFORMATION: �
https://bpsalliance.org �
www.sabic.com �
www.ineos-styrolution.com �
www.avient.com �
www.ampacet.com �
www.eurotec-ep.com �
www.polyplastics-global.com �
www.evonik.com �
www.celanese.com �
www.raumedic.com
Streamline Production.
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IMAGE: CURITEVA/EVONIK
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