A device for threading a conduit into a communication with a vein or artery beneath the skin of a patient, during an insertion procedure, comprising: a hollow needle having an elongated needle body, said needle body having an exterior surface extending from a first end to a sharpened distal tip, said needle body having an interior surface defining an axial conduit communicating from said first end to said distal tip and sized for passage of a wire therethrough; a dilator having an elongated dilator body extending from a proximal end to a distal end and having an exterior surface between said proximal and distal end; said dilator body having an intermediate portion (i) extending from said proximal end to a distal portion (d), said distal portion extending from said distal end toward said proximal end; said dilator body having an axial passage defined by an interior sidewall, said axial passage extending between openings at said proximal and distal end; a sheath, said sheath coaxially engageable with said dilator in an engaged position; said sheath having an elongated sheath body having and exterior surface extending from a first end to a opposite second end and having an axial passageway defined by a passage wall, said axial passageway coaxially positionable about an intermediate portion of said exterior surface of said dilator body, when in said engaged position; characterised in that when said dilator is in an engaged position in said sheath, the distal portion (d) of said dilator protrudes from the distal end of said sheath, and by antimicrobial surface areas, formed upon said interior surface of said axial conduit, said exterior surface of said needle body, said passage wall of said axial passageway, said exterior surface of said sheath body, said distal portion of said dilator body, and said interior sidewall of said axial passage; and wherein said antimicrobial surface areas inhibit or prevent pathogens from positioning upon said surface areas and being communicated beneath said skin of said patient during said insertion procedure of the device. a hollow needle having an elongated needle body, said needle body having an exterior surface extending from a first end to a sharpened distal tip, said needle body having an interior surface defining an axial conduit communicating from said first end to said distal tip and sized for passage of a wire therethrough; a dilator having an elongated dilator body extending from a proximal end to a distal end and having an exterior surface between said proximal and distal end; said dilator body having an intermediate portion (i) extending from said proximal end to a distal portion (d), said distal portion extending from said distal end toward said proximal end; said dilator body having an axial passage defined by an interior sidewall, said axial passage extending between openings at said proximal and distal end; a sheath, said sheath coaxially engageable with said dilator in an engaged position; said sheath having an elongated sheath body having and exterior surface extending from a first end to a opposite second end and having an axial passageway defined by a passage wall, said axial passageway coaxially positionable about an intermediate portion of said exterior surface of said dilator body, when in said engaged position; characterised in that when said dilator is in an engaged position in said sheath, the distal portion (d) of said dilator protrudes from the distal end of said sheath, and by antimicrobial surface areas, formed upon said interior surface of said axial conduit, said exterior surface of said needle body, said passage wall of said axial passageway, said exterior surface of said sheath body, said distal portion of said dilator body, and said interior sidewall of said axial passage; and wherein said antimicrobial surface areas inhibit or prevent pathogens from positioning upon said surface areas and being communicated beneath said skin of said patient during said insertion procedure of the device.