Medical Device Surface Modifications & Coatings

Surfaces of medical device components often require modification to improve performance or maximize bond adhesion. Polyzen has in-house expertise in a variety of techniques used to enhance surface properties of plastic parts.

Surface Enhancements

Medical polymers provide mechanical, thermal, electrical, and other properties necessary to meet the requirements of each medical device. However, additional performance characteristics are often required for the surface of device components. These include:

  • Hydrophilic coatings to reduce friction in aqueous environments
  • Antimicrobial coatings to reduce the colonization of bacteria on devices that cause infection
  • Anti-thrombogenic coatings that reduce the risk of blood clots
  • Anti-static coatings that reduce the buildup of electrical charges
  • Anti-coagulant coatings, such as heparin, that thin blood and prevent blood clotting
  • Active pharmaceutical ingredient (API) coatings for drug delivery
  • And much more

Surface Treatment for Coating & Bonding

Surface modifications, such as plasma treatment, are used to prepare plastic surfaces for adherence of a coating or to increase the bond strength between two dissimilar materials. Plasma treatment refers to a plasma reaction that either results in modification of the molecular structure of the surface or atomic substitution. Only a few atomic layers on the surface are involved in the process, so bulk properties of polymer remain unaltered by the chemistry. Plasma treatment with benign gases such as oxygen or nitrogen provides adequate surface activation for enhanced wetting and adhesive bonding of materials such as polyethylene or polypropylene.

Typical Polymer Materials

Our expert team of material science specialists works directly with each customer to develop and optimize the surface of medical device components. Our team has experience modifying surfaces of components from a wide range of materials. These include thermoplastic polyurethanes (TPUs), thermoplastic elastomers (TPEs), polyamides (nylons, Pebax*), thermoplastic polyesters (Hytrel*, Arnitel*), ethylene vinyl acetates (EVAs), polyvinylidene fluoride (PVDF), polypropylene, polyethylene, and more.


About Polyzen

Polyzen, Inc. is a leading contract developer and manufacturer of custom medical-grade polymer components and products for medical device manufacturers worldwide. With fully equipped facilities in Apex, NC, we’re capable of taking any customer’s concept from prototype to full-scale production. We offer a variety of technologies and turnkey services to meet the most demanding application and regulatory challenges.

Polyzen Can Help

Rely on Polyzen’s expertise to bring your medical polymer device needs to reality.

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