BIOCOMPATIBLE, SURFACE MODIFIED MATERIALS

摘要

A biomedical device having a hydrophilic gradient surface is provided, wherein the hydrophilic gradient surface comprises (a) a first layer having a first contact angle; (b) a second layer having a second contact angle less than the first contact angle of the first layer; and (c) a third layer having a third contact angle less than the first and second contact angles of the first and second layers. A method for increasing hydrophilicity or wettability of a biomedical device having a hydrophilic gradient surface is also provided.