With its use of a patented dual-lumen catheter design, IRRAflow allows the user to transition from passive drainage to active fluid management. By using one of these two lumens to periodically irrigate fluids through the catheter, the catheter tip remains unobstructed, ensuring the accuracy of the pressure measurement and the patency of the drainage. Unlike existing EVDs that become blocked up to 40%1 of the time during the drainage process, the IRRAflow system has been designed to prevent these blockages from forming.