US Patent 7989042 Medical devices with highly flexible coated hypotube

Hypotubes such as micromachined hypotubes can include one or more tie layers appropriate for subsequent application of a hydrophilic coating. In particular, a medical device may include a micromachined hypotube having a level of flexibility and a tie layer disposed over the hypotube such that the medical device has a level of flexibility at least substantially equivalent to the level of flexibility of the hypotube.