Frequently Asked Questions About Parylene Coatings for Medical Devices

The fact that Parylene conformal coating offers molecular-level deposition makes them extremely versatile. One of the most beneficial uses of Parylene coatings is providing protection for medical instruments and devices. Since medical devices often need coating that is FDA approved for use within the body, some companies are now using biocompatible and biostable Parylene to meet this essential industry’s unique demands.

What is Parylene?

Parylene is an extremely thin polymer based on the raw material di-paraxylylene that is applied via a process known as vacuum depositing to ensure complete coverage. It is thermally stable and offers an impressive level of chemical, moisture, and dielectric barrier protection. This impressive material is used in a wide variety of industries, including the medical industry.

What Makes it Better?

Parylene stands apart from other coating materials for several reasons. First, its application does not require solvents, catalysts, plasticizers, or other additives. Plus, it is applied to objects at room temperature via vacuum deposition. This process turns the white, crystalline powder form of di-paraxylylene into a strong, consistent polymer film with precise topography and a lubricious surface.

What Medical Devices Can Be Coated?

Parylene can be applied to devices made of glass, plastic, metal, ceramic, elastomers, and silicone-based rubber. These devices can vary significantly in shape since Parylene will conform even to sharp edges and points.

Once applied, Parylene inhibits the growth of biological agents like bacteria and other pathogens. This fact, combined with its biocompatibility, makes it perfect for coating medical devices like catheters, stents, and pacemakers. It is also ideal for coating surgical implements, needles, epidural probes, and a wide variety of other medical tools and devices.

What Are the Benefits of Parylene Coating?

In addition to its biocompatibility and bacterial resistance, Parylene coating also offers several other benefits. It is chemically inert and biologically stable, non-toxic, solvent-free, and requires no curing cycle after application.

Parylene coatings also offer dry-film lubricity with a friction coefficient close that that of Teflon. The material can be applied in extremely thin layers, which makes it perfect for coating even complex surfaces. The best way to take advantage of Parylene conformal coatings is to get in contact with a company that specializes in medical applications.