- ONE valve for premature and newborn babies, children and adults
three product variants: for ventriculo-peritoneal (GAV 2.0) and lumbo-peritoneal sections (GAV 2.0 LP, straight and GAV 2.0 LP, U-shaped)
more protection against overdrainage complications due to position-dependent function
uncomplicated pressure stage concept with 6 different fixed pressure stages to choose from
simple pressure level coding for clear pressure level detection in imaging
MRT compatible up to 3 Tesla
slim, cylindrical and small design for a better flow
precise precision engineering
robust and durable due to the use of titanium
The GAV 2.0 must always be implanted parallel to the body axis for optimal function. It then automatically adapts its opening pressure to the different body positions of the patient and can thus meet the different requirements of a shunt system in lying and standing positions and, above all, counteract the risk of possible overdrainage in the upright body position.
One valve for children and adults
The slim cylindrical design of its predecessor has been further optimised and further reduced in the GAV 2.0 for a better flow pattern. Coupled with the modified pressure stage concept, the GAV 2.0 is suitable for the treatment of hydrocephalus in premature and newborn babies, children and adults.
The valve opening pressure of the GAV 2.0 is only determined by the micro-spiral spring of the differential pressure unit when the valve is lying down. The gravitational unit is not active in this body position and is always open. If the patient's cerebral pressure (ICP) exceeds the opening pressure of the microcoil spring, the closing ball moves out of the cone, leaving a gap for drainage.
In the vertical body position, the gravitational and differential pressure unit act together. As soon as the patient stands up, the balls in the gravitational unit are activated, closing the passage and using gravity to increase the valve opening pressure. In addition to the opening pressure of the differential pressure unit, the weight of the balls must now be overcome. Only when the sum of intracranial pressure (ICP) and hydrostatic pressure exceeds the opening pressure of both units, drainage is possible again. This significantly higher opening pressure for the standing body position compared to the lying position takes into account the physical requirements of a shunt system and reduces the risk of overdrainage.
For detailed information on the optimum pressure stage setting, please refer to our pressure stage recommendation.
MIETHKE APP - UNDERSTANDING VALVES EASILY
The MIETHKE App shows clearly and quickly understandable how our valves work:
+ Influence of the body position on the opening pressure: The motion sensor of the smartphone simulates the body position of the patient: upright - inclined - lying.
+ Pressure stage recognition in the X-ray image: Every set or preset pressure stage is shown here and can be easily recognized by means of templates.
+ Simulation of adjustability: Valves can be easily adjusted with the finger and thus help to understand what is happening inside the valve.
+ View into the inside of MIETHKE valves: All valves allow a view of their construction and thus the influence of the cerebrospinal fluid flow on the functioning can be shown in an easily understandable way.
+ free for Apple and Android
B. Braun and MIETHKE - Together for a better life with hydrocephalus
We have a long and intensive partnership with B. Braun in the field of neurosurgery. We are driven by a common vision: to improve the lives of hydrocephalus patients around the world with innovative solutions.
Our partnership is an exciting combination of B. Braun's nearly 180 years of expertise as one of the world's leading medical device and pharmaceutical companies and our agility as an innovative company and technology leader in gravitation-based shunt technology.
Our strong partner in neurosurgery: