Introducer components, assemblies, and methods thereof

An introducer assembly, comprising:

• a vacuum-generating device;
• a needle assembly fluidly connected to the vacuum-generating device, the needle assembly including:
• a needle including:
• a needle shaft including a needle lumen;
• a needle slot in a proximal portion of the needle shaft;
• and
• a needle hub over the proximal portion of the needle shaft but proximal of the needle slot;
• and
• a valve over the needle slot, the valve including an elastomeric sleeve having a valve port aligned with the needle slot;
• and
• an access guidewire loaded in the needle lumen and sealed therein around an outer diameter of the access guidewire by way of the valve port in a ready-to-deploy state of the introducer assembly,
• wherein the access guidewire includes a ‘J’-shaped guidewire tip that assumes a straightened state in the ready-to-deploy state of the introducer assembly and a curved state when the guidewire tip is advanced beyond a distal end of the needle shaft in a deployed state of the introducer assembly.