Patent ID: 8759454

Claim:
A device comprising: at least one surface formed from a polymer blend including a hydrophobic first polymer component and a hydrophilic second polymer component, wherein the hydrophobic first polymer component is a polycarbonate polyurethane polymer having a water contact angle greater than 75 degrees and the hydrophilic second polymer component is a polyurethane polymer having a water contact angle less than 75 degrees, wherein the weight percentage of the polycarbonate polyurethane polymer of the hydrophobic first polymer component is greater than the weight percentage of the polyurethane polymer of the hydrophilic second polymer component; wherein the polycarbonate polyurethane polymer of the hydrophobic first polymer component and the polyurethane polymer of the hydrophilic second polymer component are immiscible with respect to one another and are phase separated in the polymer blend and the weight percentage of the polyurethane polymer of the hydrophilic polymer component is at least twenty percent of the polymer blend in order to provide improved lubricity of the surface of the device.