High performance polymers for medical devices

With more than forty years of experience, Evonik offers customized products for the medical sector. The product portfolio includes the MEDICAL CARE SERIES, special polymers for medical technology such as fluid delivery systems, catheter, surgical instruments and many others.

The application of polymers in medical devices is often challenging. Besides meeting highest quality standards, materials need to withstand aggressive disinfectants, pharmaceuticals and resist different sterilization procedures without sacrificing mechanical performance. Furthermore, it needs to be ensured that no harmful interaction takes place among the material and any bodily tissue or fluids. Moreover, any reaction with pharmaceutical formulation needs to be avoided to prevent changes in the composition and activity of the active ingredients. Not least, materials for medical applications need to exhibit an excellent processability in order to realize delicate geometries for minimal invasive devices or accurate fit of connecting parts.

A proper material selection is a crucial step in the development process of medical devices. Materials need to meet the highest quality standards, resist harsh chemicals & pharmaceuticals, and fulfill critical performance requirements which need to be maintained after sterilization.

Right polymer for each application

We offer a variety of materials under the Care brand – from transparent to translucent, from elastic to strong, from unmodified to stabilized, filled or functional. In addition to our standard Care grades, Evonik can use its decades of polymer and compound development experience and process know how to customize materials which fulfill unmet customer and market requirements.

Product overview

Strong grades

VESTAMID® Care ML grades cover a range of polyamide 12 (PA12) resins with different viscosities for processing via extrusion or injection molding. In addition to unstabilized base resins, our portfolio contains compounds with heat- and UV-stabilization as well as reinforced compounds. Due to the high dimensional stability, tensile strength and low sliding friction, VESTAMID® Care ML grades are for example the materials of choice for catheters and tubings. The VESTAMID® Care ML materials meet even highest challenges in applications such as angio-plasty balloon catheters. Typical areas of application for reinforced VESTAMID® Care ML grades include housing-parts, monitoring and imaging devices and durable medical equipment.

Flexible grades

VESTAMID® Care ME materials are polyether block amides, Evonik’s flexible polyamide, which is available in various hardnesses. Due to their broad range of flexibility, VESTAMID® Care ME grades are used in different parts of catheter constructions – may it be the distal end, requiring a low modulus for non-traumatic insertion, or the proximal end, needing a high modulus for force and torque transmission. All VESTAMID® Care ME grades are free of plasticizers and stabilized against heat and UV-light.

Transparent grades

TROGAMID® Care grades include microcrystalline transparent polyamides. All TROGAMID® Care grades are BPA free. The microcrystalline TROGAMID® Care MX grades exhibit exceptional resistance against chemicals and stress-cracking. Hence, TROGAMID® Care MX is the material of choice for all applications dealing with pharmaceutical formulations, lipids or aggressive disinfectants. Examples include dialyzer parts, housings, covers, hearing aids, fluid and drug delivery equipment such as stopcocks and connectors.

High temperature grades

When it comes to application conditions involving high temperatures, VESTAKEEP® Care grades are the materials of choice. VESTAKEEP® Care polyether ether ketone (PEEK) medical grades are available in different viscosities for processing via extrusion or injection molding. These products offer higher resistance to heat, chemicals, and hydrolysis. Typical areas of application for VESTAKEEP® Care include parts for housings and surgical instruments, gear wheels and other parts for functional units and durable medical equipment. Due to their low water absorption, parts made out from VESTKEEP® Care grades resist steam autoclaving for an extended number of autoclaving cycles.


Explore our high performance polymer materials for medical devices