Here is a great article on the benefits of hydrophlic coatings from Great Health Guide by Michelle King.
Many types of orthopedic and medical implants are coated with hydrophilic materials. These specialized coatings are deposited to extremely tight tolerances to coat the surface of the part or component without adding any additional size.
These coatings are designed to bond with the water surrounding them to create a smooth, gel-like surface that doesn’t wear away like other types of lubricants that are on the surface but separate from the device. Once the hydrophilic coatings interact with the tissues of the body, they are able to move through tissue with very limited friction, causing limited tissue trauma and reducing risks of irritation.
To read the full article, visit http://greathealthguide.com/the-benefits-of-hydrophilic-coatings/