Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Some commonly used aspiration needles. 1, 22-gauge 89 mm long spinal needle; 2, 18-gauge 10 cm long chiba needle; 3, 20-gauge 15 cm long chiba needle; 4, Coaxial system had been formed by placing 20-gauge needle into 18-gauge needle; 5, Stylet of 18-gauge chiba needle.
