Patent ID: 7569046

Claim:
A medical catheter system comprising: a first catheter having an entrance orifice, an exit orifice, a channel connecting the entrance orifice and the exit orifice, a wall surrounding the channel, the hardness of the wall surrounding the channel, when considered from an initial reference point at the entrance orifice and traveling towards the exit orifice, regardless of the orientation of the wall, decreasing in hardness in a first distinct region then increasing in hardness in a second distinct region and then decreasing in hardness again in a third distinct region, the hardness of the third region being different than the hardness of the first region and, a second catheter located within the first catheter, the first catheter sized to allow the second catheter to move within it, the second catheter having a steerable distal portion and a bendable curved memory portion; wherein the bendable curved memory portion of the second catheter contains a cross-linking polymer activated by ultra-violet light, and when activated the curved memory portion becomes shaped into a predetermined shape.