Tuohy needle
A large-bore hypodermic needle with a slightly curved tip and lateral opening (Huber point), designed to locate the epidural space and direct a catheter through it.
How it is used
Used to perform epidural anesthesia or analgesia, typically with the loss-of-resistance technique, and to thread the epidural catheter for continuous local anesthetic administration.
Clinical tip
The lateral-opening bevel allows the catheter to be directed cephalad without the needle tip shearing it.
Sources
This entry is part of the Instriq catalog, researched and written per specialty from real web research -- never generated or invented without verification -- and reviewed skeptically and independently before publication. How this catalog is written.
History
Added to the catalog on 2026-10-05.
Dates derived from the project's public version-control history on GitHub, not a live collaborative edit log.