Intravenous catheter insertion and blood sample devices and method of use

A method of inserting a catheter, comprising:

• obtaining a catheter insertion device, comprising:
• a handle having a proximal region and a distal region, the distal region including a slot between a top extension and a bottom extension, the slot extending through a distal end of the handle;
• a needle having a proximal end positioned in the proximal region of the handle and a distal end extending from the distal region of the handle;
• a guidewire having a proximal end positioned in the proximal region of the handle and a distal end positioned in a lumen of the needle;
• and
• the catheter positioned coaxially over the needle, the catheter having a proximal end connected to a catheter hub, the catheter hub slidably disposed in the slot;
• inserting the distal end of the needle and a distal end of the catheter together into a blood vessel;
• confirming entry into the blood vessel;
• sliding the distal end of the guidewire out of the lumen of the needle and into the blood vessel after confirming entry;
• moving the catheter hub from a first position in the distal region of the handle to a second position distal of the distal region;
• and
• removing the needle and the guidewire from the catheter and the catheter hub.