The stylet from the spinal needle is then withdrawn and drops of cerebrospinal fluid are collected.

The spinal dose is then given, the spinal needle withdrawn, and the epidural catheter inserted as normal.

Claire reached for the spinal needle.

For extremely obese patients, some anaesthesiologists prefer spinal needles which are 12.7 cm long (5 inches).

The tip of the spinal needle has a point or small bevel.

Intracerebroventricular injection was performed by passing a 1.5 in spinal needle through the cerebroventricular guide.

The procedure is performed by inserting a long spinal needle into the ventricular chamber.

The spinal needle is then withdrawn and the epidural catheter inserted in the standard manner.

A standard epidural pack may be used with a standard spinal needle.

However, the standard length of a spinal needle (90mm) may be insufficiently long to reach the subarachnoid space through the Tuohy needle.