Indication; Technical Description; Function Of The Valve - MIETHKE proGAV 2.0 Mode D'emploi

| INSTRUCTIONS FOR USE
GB
1 Bow spring
2 Sapphire ball
3 Rotor
4 Tantalum ball
5 Sapphire ball
Fig. 1: Schematic cross section of the proGAV 2.0

INDICATION

The proGAV 2.0 is used for cerebrospinal flu-
id (CSF) drainage in the treatment of hydro-
cephalus.

TECHNICAL DESCRIPTION

The proGAV 2.0 is a valve made from titanium.
It consists of an adjustable differential pressure
unit and a gravitational unit.
The adjustable differential pressure unit con-
sists of a stable titanium housing in which a
tried and tested ball cone valve (1) is integrated
in the proximal section. A bow spring (2) de-
termines the opening pressure of this unit. The
pretension of the spring, and therefore the valve
16
Adjustable differential pressure unit
(adjustable DP-unit)
Gravitational unit
(SHUNTASSISTANT 2.0)
opening pressure, can be adjusted through the
skin using a revolving rotor on a bearing (3).
Major components in the gravitational unit are
a tantalum ball (4), which defines the opening
pressure for this valve depending on the body
position and a sapphire ball (5), which ensures
precise closure.

FUNCTION OF THE VALVE

The proGAV 2.0 is a posture dependent hydro-
cephalus valve. The opening pressure for the
proGAV 2.0 is composed of the opening pres-
sures for the adjustable differential pressure unit
and the gravitational unit.
proGAV 2.0
1
2
3
4
5