Peripheral intravenous catheter assembly having an extension set

A peripheral intravenous catheter assembly, comprising:

• a catheter adapter comprising a proximal end, a distal end, a lumen extending through the proximal end and the distal end along a longitudinal axis of the catheter adapter, and a side port that extends outwardly and distally from a first side of the catheter adapter at a first acute angle from the longitudinal axis of the catheter adapter;
• a catheter extending distally from the distal end of the catheter adapter;
• a first extension tube comprising a proximal end and a distal end, wherein the first extension tube extends from the side port at the first acute angle, the first extension tube having a length between 10 and 14 millimeters;
• a first connector comprising a first port, a second port at a proximal end of the first connector, a third port at a distal end of the first connector and opposite the second port, a lumen extending through the first port, the second port, and the third port, wherein the third port is coupled to the proximal end of the first extension tube to thereby position the third port between 10 and 14 millimeters from the side port, wherein the second port and the third port are aligned on a longitudinal axis of the first connector and the first port extends outwardly and distally from a first side of the first connector at a second acute angle from the longitudinal axis of the first connector, wherein the first and second acute angles are selected so that, when the longitudinal axis of the first connector is aligned with a longitudinal axis of the side port, the first port is substantially perpendicular to the longitudinal axis of the catheter adapter, the length of the first connector along the longitudinal axis of the first connector being between 0.5 and 0.6 inches;
• a second extension tube comprising a proximal end and a distal end, wherein the distal end of the second extension tube is coupled to the first port, the second extension tube having a length between 4 and 7 inches;
• and
• a second connector coupled to the proximal end of the second extension tube, wherein the lengths of the first and second extension tubes and the first and second acute angles in combination are dimensioned and oriented such that the second connector is positioned distal to the catheter adapter to thereby minimize interference of the second connector with a hand of a clinician as the clinician grips the catheter adapter to insert the catheter into a vasculature of a patient;
• wherein a portion of the lumen of the first connector does not include any catch points for a probe moving through the first connector in the distal direction, wherein the portion of the lumen of the first connector extends along the longitudinal axis of the first connector and through an entirety of the second port of the first connector to the first extension tube, wherein the lengths of the first connector and the first extension tube are configured to facilitate rapid infusion of medications into and instrument access to the vasculature of the patient via the first connector.