A highly safe catheter assembly exhibiting excellent torque transmission, pushability and kink resistance and operation of a guidewire is provided. The catheter assembly comprises a catheter having a lumen extending between an opening on its distal end and an opening in its periphery in distal end portion...http://www.google.co.uk/patents/US5947925?utm_source=gb-gplus-sharePatent US5947925 - Catheter assembly
