====== Ommaya reservoir implantation ======


===== Technique =====

==== Positioning ====

Supine on surgical table.

Head in neutral position.

Neuro Navigation.

==== Anatomy ====

[[Kocher's point]] is used for access to the [[frontal horn]] of the [[lateral ventricle]].

The trajectory for entry into the frontal horn of the lateral ventricle is toward the intersection of the medial canthus and tragus.


==== Incision ====

{{::ommayasemicircularincision.jpg?200|}}

A semi-circular incision is made in the right frontal area.

==== Operation ====

A curvilinear incision was made in the right frontal region to expose Kocher's point.

A burr hole is placed at Kocher's point.

With stereotactic navigation, the ventricular catheter is inserted to a pre-measured depth of approximately 5.5 - 6 cm from the cortex.

The catheter is truncated and attached to the Ommaya reservoir.

The reservoir is placed posterior to the burr hole in a subgaleal pocket.

The incision is closed in layers.

The skin is closed with a running absorbable monofilament suture and sealed with Dermabond.