US D256617 S
FIG. 1 is a top view of the double lumen catheter insert, with tubes shown in broken away lines indicating an indeterminate length of the tubes,
FIG. 2 is a front view thereof,
FIG. 3 is a side view thereof,
FIG. 4 is a back view thereof,
FIG. 5 is a bottom view thereof, and
FIG. 6 is an enlarged side view thereof, with the cap removed.