13
INSTRUCTIONS FOR USE
|
GB
INDICATION
The
miniNAV
is used for draining cerebrospinal
fluid from the ventricles into the peritoneum in
hydrocephalus patients.
TECHNICAL DESCRIPTION
The
miniNAV
was developed to offer a small-
sized valve without the obstruction related pro-
blems that are known to arise in the treatment
of hydrocephalus.
The
miniNAV
is composed of a robust titanium
casing (1) whose proximal end contains a ball-
cone valve. A spiral spring (2) maintains the
opening pressure of the ball-cone valve and the
sapphire ball (3) ensures the precise closure of
the valve.
The inlet connector (4) and the outlet connec-
tor (5) are also made of titanium.
Fig. 1: Schematic cross-section of the miniNAV
4. inlet connector
1. titanium housing
2. spiral spring
5. outlet connecotor
3. sapphire ball
