
A Chiba needle is a thin, flexible, and hollow medical needle commonly used for fine-needle aspiration (FNA), biopsies, and diagnostic or interventional radiology procedures. It allows precise access to internal organs or fluid collections, especially under ultrasound or CT guidance.
Key Features of a Chiba Needle:
Thin Gauge (Usually 22G–25G)
Minimally invasive and ideal for delicate structures.
Flexible Shaft
Allows easy navigation through tissue and around organs.
Beveled Sharp Tip
Ensures clean penetration with minimal tissue damage.
Radiopaque Markings
Visible under fluoroscopy or CT for precise positioning.
Luer Lock Hub
Connects securely to syringes for aspiration or contrast injection.
Echogenic Tip (Optional)
Enhances visibility under ultrasound guidance.
Sterile & Disposable
Designed for single use to reduce infection risk.
Common Uses:
Fine Needle Aspiration (FNA) – for lung, liver, pancreas, or lymph node biopsy.
Thoracentesis – draining fluid from the pleural space.
Amniocentesis – sampling amniotic fluid during pregnancy.
Spinal or epidural procedures – in select cases requiring fine access.
Biliary drainage or cholangiography – accessing bile ducts in radiologic procedures.