Be first to read the latest tech news, Industry Leader's Insights, and CIO interviews of medium and large enterprises exclusively from Medical Tech Outlook
THANK YOU FOR SUBSCRIBING
By
MedTech Outlook | Thursday, April 22, 2021
FREMONT, CA : Friction between moving parts can be difficult to handle as disposable medical equipment manufacturers build precision mechanical devices. To smooth the delicate motions of components, engineers usually use medical-grade lubricants or coatings such as oils, greases, or dry powders. Parts that slide, shear, twist, rock, or pivot benefit from the coatings because they reduce friction and sticking. They eliminate the ‘stiction’ issues that plague disposable medical devices like catheters, cutting equipment, staplers, hypo tubes, and other ‘surface to surface’ assemblies. Coatings with lubricants can minimize the coefficient of friction on treated parts to as little as 0.06. This usually results in a reduction of 25-30 percent in actuation forces, significantly improving the part’s efficiency. Without the aid of a lubricating coating, many of today’s complex medical devices will not be commercially viable.
To help speed up the manufacture of plastic and metal parts, lubricating coatings are also applied to manufacturing machinery and assembly fixtures. Chains and pulleys, metal extrusions, machine window guides, and door tracks, chutes and slides, conveyors, and nearly every other surface or assembly that needs a clean, durable, slick coating for optimal performance are all coated with them. Lubricating coatings are also used to get plastic parts out of injection mold die cavities. Not all coatings, however, are created equal. When selecting a lubricating coating for medical device assembly, keep the following considerations in mind.
Stay ahead of the industry with exclusive feature stories on the top companies, expert insights and the latest news delivered straight to your inbox. Subscribe today.
Good Solubility and Low Viscosity: Lubricating coatings are usually applied by dipping, spraying, or wiping. The carrier fluid, or the liquid used to spread the coating, should be designed to remove or disperse the coating so that when it evaporates, it leaves a very thin, uniform layer on the treated part’s surface. It should also have a low viscosity to wet and adhere to the surface geometry of the treated components, resulting in a highly consistent surface coating.
Hostile to Bioburden: To avoid bacterial growth and other biologic contamination, device designers can use a lubricating coating with a non-aqueous carrier fluid. It should be compliant with all commercially available EtO (Ethylene Oxide) and radiation sterilization processes in addition to being pyrogenically inert.
Nonflammable: To minimize fire risk as it is being applied, the lubricating coating should be nonflammable. This is particularly true for high-volume, high-speed manufacturing plants. Since many mechanical assembly operations are susceptible to static discharge, nonflammability is critical for storage and use protection.
Good Material Compatibility: Lubricating coatings should be able to work with a wide range of materials. They should be safe to use on metal, glass, plastic, and ceramic pieces, among other materials.
Easy to Apply: During the in-house assembly process, the lubricating coating should be simple to apply. Device manufacturers save time and resources by validating a procedure in which they still retain ownership of the parts being processed by not outsourcing the coating process.
More in News
I agree We use cookies on this website to enhance your user experience. By clicking any link on this page you are giving your consent for us to set cookies. More info

However, if you would like to share the information in this article, you may use the link below:
www.medicaltechoutlookapac.com/news/key-considerations-with-medical-device-coatings--nwid-1622.html
