Double Helix – What is it?

A double helix, on a needle, is the two thread mouldings that wind around the needle hub. These interact with a luer-lok/lock collar to create a firm grip on the needle when the needle is twisted into position on a syringe. Their design ensures a much stronger connection that would be incredibly difficult to remove without twisting off, compared to simple “tab” or wing style mouldings that can tend to be weaker and more prone to fail.

Most blunt needles from NeedlEZ are of the double helix type.