Catheter hub

Catheter hub

Catheter hub illustrating the various specifications of the catheter. The figure 7 in the centre indicates the French size of the catheter. 7F catheter has a diameter of 2.3 mm. The figure 100 to the right of the figure 7 indicates the length of the catheter in centimeters. The figure 1200 in the upper stub indicates the maximum pressure tolerated by the catheter as 1200 psi (pounds per square inch). The figure .038 in the lower stub indicates the maximum size of the guide wire as 0.038 inch guide wire.