The miniNAV is available in four different pressure levels.
As a standard pressure setting, 10 cmH₂O is recommended.
For patients with normal pressure hydrocephalus a miniNAV with pressure level of 5 cmH₂O is available.

In case the patient suffers from symptoms associated with over-drainage, or complicatons with overdrainage are expected, we recommend implantation of the SHUNTASSISTANT in addition to the miniNAV-valve. The SHUNTASSISTANT is specially designed for preventing problems with overdrainage.

The coding of the miniNAV can be identified according to the shape of the valve's housing.

Where the miniNAV is dished (concave) at the proximal end and convex on the distal end, this indicates a pressure setting of 5 cmH₂O (Fig. 1).