Rapid insertion integrated catheter and method of using an integrated catheter

A catheter assembly for rapid insertion into a vessel comprising:

• a needle having proximal and distal ends, the distal end defining a sharp distal tip for subcutaneous and vessel insertion, and a longitudinally extending guidewire receiving channel;
• a guidewire having proximal and distal ends positioned within said guidewire receiving channel and extending substantially along a longitudinal length of said needle at least between said needle ends and having a length greater than said needle longitudinal length so as to extend distally beyond the distal tip of said needle;
• a catheter having proximal and distal ends and a first longitudinal length defined between said catheter proximal and distal ends and a longitudinally extending first lumen extending between said catheter proximal and distal ends and configured to receive said needle, wherein a distal end of said first lumen defines a distal port for providing intravenous communication, a lumen proximal end defines a proximal port, wherein said needle extends within said first lumen a second longitudinal length defined from said distal end of said catheter to an intermediate location along said catheter length, said needle second longitudinal length being less than said catheter first longitudinal length and a proximal portion of said needle extends external of and adjacent to an outer portion of said catheter transverse to said first lumen wherein said first lumen is in fluid communication with a side port configured at said intermediate location when said side port is devoid of said needle for administration of fluids from said side port.