Blood draw device with anti-buckling feature

A blood draw device for use with a peripheral intravenous catheter (PIVC) comprising:

• a catheter having a proximal end, a distal end, and a sidewall therebetween defining a lumen;
• an introducer having a proximal end, a distal end, and a sidewall therebetween defining an inner volume configured to movably receive the catheter, the introducer comprising an actuator surface defining an actuator space, the introducer having a top surface and a bottom surface positioned below the top surface;
• an actuator movably coupled to the introducer, the actuator is configured to move relative to the introducer to move the catheter between a first position, in which the distal end of the catheter is disposed within the introducer, and a second position, in which the distal end of the catheter is disposed beyond the distal end of 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 of the actuator comprising a lower body positioned within the actuator space;
• and
• a rail insert having an outer top surface in contact with the actuator surface and an outer bottom surface, the rail insert positioned between the lower body of the second portion of the actuator and the actuator surface, the rail insert extending in a direction extending from the proximal end of the introducer to the distal end of the introducer, the outer bottom surface of the rail insert is configured to engage a portion of the catheter during use of the blood draw device.