System for reduced buckling of a probe during deployment of a blood draw device

A fluid transfer device comprising:

• a catheter having a proximal end portion and a distal end portion and defining a lumen extending through the proximal end portion and the distal end portion;
• an introducer having a proximal end portion and a distal end portion, the introducer defining an inner volume configured to movably receive the catheter, the distal end portion of the introducer having a lock configured to couple the introducer to an indwelling peripheral intravenous line;
• an actuator movably coupled to the introducer, the actuator having a first portion disposed outside of the introducer and a second portion disposed in the inner volume of the introducer, the second portion being coupled to the proximal end portion of the catheter, the actuator configured to move relative to the introducer to move the catheter between a first position, in which the catheter is disposed within the introducer, and a second position, in which the distal end portion of the catheter is disposed beyond the distal end portion of the introducer such that at least a first portion of the catheter is disposed within the peripheral intravenous line when the introducer is coupled to the peripheral intravenous line;
• and
• a catheter support movably coupled to the introducer and positioned between the actuator and the distal end portion of the introducer, wherein the catheter support comprises:
• a tether having a proximal end and a distal end;
• a hub attached to the distal end of the tether;
• and
• a passageway extending through the hub,
• wherein the catheter extends from the second portion of the actuator through the passageway of the catheter support to the distal end portion of the introducer, and during movement of the actuator to move the catheter from the first position to the second position, the actuator contacts at least a portion of the catheter support and moves the catheter support with respect to the introducer.