An expandable strain relief sleeve 30 for a catheter assembly 10 is described. The expandable sleeve 30 includes a body configured to fit coaxially around an outer diameter of a catheter 14 of the catheter assembly at a transition location 32 between a hub and the catheter. Further, the body of the sleeve includes a length extending from a first end to a second end. As such, the sleeve 30 is expandable between a compressed position (Fig.2) and an expanded position (Fig.3) so as to prevent the catheter from collapsing along the length of the sleeve. In addition, when in the expanded position, at least a portion of an interior surface of the sleeve contacts an outer diameter of the catheter.
