Patent ID: 8394079

Claim:
A catheter including a proximal section, a distal end and a lumen extending along a length of the catheter from the proximal section to the distal end, the proximal section of the catheter comprising: a proximal terminal end defining a perimeter of a proximal opening of the lumen; a proximal port portion of the lumen extending distally from the proximal opening of the lumen, a perimeter of the proximal port portion being divided into a first portion and a second portion, each of the first and second portions extending along a length of the proximal port portion and being generally located on opposite sides of the lumen; a seal zone portion of the lumen extending distally from the proximal port portion of the lumen to a main portion of the lumen, the main portion of the lumen extending distally to the distal end of the catheter; a first part having a relatively soft inner surface defining the first portion of the perimeter of the proximal port portion of the lumen; and a second part having a relatively hard inner surface defining the second portion of the perimeter of the proximal port portion of the lumen.