The most standard type of butterfly needle is the stand […]
The most standard type of butterfly needle is the standard safety device. This needle comes in a variety of sizes and consists of tubing, a needle, and a hub or luer lock.
After performing venipuncture, you must hold the hub of the butterfly to activate the safety mechanism. Once the needle is out, you pull the tubing and cover the needle using the safety device.
A newer type of butterfly needle is the pushbutton safety device which offers a slide and lock safety device. This minimizes the risk of accidental needle sticks.