Tuohy needle

Tuohy needle

Infobox Laboratory equipment
name = Tuohy needle


caption = A 16G Portex Tuohy needle and epidural catheter. Large rule marks 1 cm apart.
acronym =
other_names =
uses = Drug delivery
inventor =
manufacturer =
model =
related = Hypodermic needleA Tuohy needle is a hollow needle, very slightly curved at the end, suitable for inserting epidural catheters.

The needle features an anti-coring curve at its tip, as shown in the picture above left.

Epidural Needle

Literally, an epidural needle is simply a needle that is placed into the epidural space. To provide continuous epidural analgesia or anesthesia, a small hollow catheter may be threaded through the epidural needle into the epidural space, and left there while the needle is removed. There are multiple types of epidural needles as well as catheters, but in modern practice in developed nations, disposable materials are used to ensure sterility. Types of epidural needles include: Crawford; Tuohy; Husted; Weiss; Eldor.

Epidural needles are designed with a curved tip to help prevent puncture of the dural membrane.

Reference: Frolich MA, Caton D: Pioneers in epidural needle design. Anesthesia and Analgesia 2001; 93: 215-220


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