Abstract: The present invention relates to a device for securing the terminal end of a catheter extension (300) used by a peritoneal dialysis patient. The Cosentino Peritoneal Dialysis Catheter Clip (3CDP) (100) consists of a rigid plastic body (100) open at both the proximal end (101) and distal end (102). Attached to the distal end (102) of the 3CPD (100) is a neck cord (120) which is simultaneously threaded through a pair of holes (112) in the distal end (102) of the 3CPD (100) and through a neck cord adjustor (200) housed inside the distal end (102) of plastic body (101). The adjustor assembly (200) is a push button arrangement made up of a push button shell (210), a push button (220), and a spring (230). The neck cord (120), which is threaded through neck cord adjustor passage (223), is pinched via the spring action of the push button (220) and the neck cord length is maintained.