Needle hub and iv catheter system comprising such needle hub

An IV catheter system comprising:

• a catheter hub, said catheter hub comprising:
• a tubular catheter, having a lumen, attached to a catheter hub body at its proximal end, with a catheter hub cavity in fluid communication with the lumen of the tubular catheter;
• a needle hub, said needle hub comprising:
• a needle extending distally from a needle hub body, said needle having a bulge and a high friction surface part at its distal end zone;
• a needle shield comprising at least one resilient arm extending distally from a base plate, said base plate having a through hole for receiving the needle there through;
• wherein the needle hub is arranged in the catheter hub, such that the needle is slidingly arranged through the lumen of said catheter, such that the needle may be withdrawn proximally from the catheter hub;
• wherein the needle shield is arranged in the catheter hub cavity in a retained manner through cooperation between the needle shield and an inner wall of the catheter hub in said catheter hub cavity, and onto the needle, such that the at least one arm rests upon and is spring loaded by the needle, and the needle is slidingly arranged within the through hole of the base plate, in an assembled state;
• and
• wherein the outer diameter of the needle bulge is larger than the inner diameter of the through hole of the base plate when the needle hub is withdrawn from the catheter hub to release the needle shield from the catheter hub and the at least one arm will cover the tip of the needle in a released state.

A shielded needle system, comprising;

• a needle hub and a needle shield;
• said needle shield comprising:
• at least one resilient arm extending distally from a base plate, said base plate having a through hole for receiving the needle there through;
• and
• wherein the needle shield is located between the bulge and the distal side of the needle hub body.