US Patent 9056188 Needle shielding flag structures

An extravascular system for accessing the vasculature of a patient may include a catheter, a needle disposed within the catheter, and/or a needle tip shield assembly. The needle tip shield assembly may have a needle cap, the needle cap may have a needle shield, and the needle shield may have one or more flags. The flags may include a first flag and a second flag. The first flag and the second flag may form an engageable barrier through which the needle cannot penetrate once the barrier is engaged. The needle shield may be a V-clip. The V-clip may include a first arm and a second arm, and the first flag may be secured to the first arm while the second flag may be secured to the second arm.