Arterial Access System and Method for Direct Arterial Blood Sampling

An arterial access system comprising:

• a catheter assembly comprising an arterial catheter and an access port;
• a blood draw device coupled to the access port and in fluid communication with the arterial catheter via the catheter assembly, the blood draw device comprising:
• a catheter tube;
• a housing having a proximal end portion and a distal end portion, the distal end portion coupleable to the access port, the housing defining an inner volume configured to movably receive the catheter tube;
• and
• an advancement member configured to move relative to the housing to move the catheter tube between a first position, in which the catheter tube is disposed within the housing, and a second position in which a distal end of the catheter tube is disposed beyond the distal end portion of the housing and past a distal tip of the arterial catheter;
• and
• a collection device positioned proximal to the housing and in fluid communication with the catheter tube;
• wherein, with the catheter tube in the second position, the collection device is configured to directly collect a sample of arterial blood through the catheter tube.