• [Translate to English:] M.blue Shunt
  • [Translate to English:] MyHCandME App - Patiententagebuch
  • Articles
  • Shunt infection: How it develops and how it can be prevented
    • Shunt therapy is the most common treatment for hydrocephalus, but carries the risk of serious complications such as shunt infections. Find out more about symptoms, causes, treatment options and preventive approaches such as antibiotic-impregnated catheters.
  • LP shunt vs. VP shunt
    • The choice between LP and VP shunt is essential for the successful treatment of hydrocephalus. This article provides a detailed comparison, looking at the indications, benefits and potential risks of both types of implantation - informed insights for better treatment decisions.
  • The measurement of intracranial pressure (ICP)
    • The measurement and interpretation of intracranial pressure (ICP) is a very helpful aid in the diagnosis and treatment of many brain diseases. The article explains the technical requirements for ICP measurements, the interpretation of ICP values in intracranial pressure measurements and their significance for effective treatment planning.
  • The Innovative Leap to Telemetric Pressure Sensors
    • Telemetric pressure sensors are setting new standards in the hydrocephalus shunt therapy. The article analyzes the technical limitations of conventional ICP sensors and presents trend-setting innovations in the field of measurement with telemetric pressure sensors - for more precise and efficient treatments.
  • Over- and underdrainage - the most common “side effects” of shunt systems
    • Shunt systems in hydrocephalus therapy have a long history, but over- and underdrainage are still common complications with their potential consequences, such as slit ventricle syndrome. The article looks at the causes, consequences and therapeutic approaches of both problems and discusses whether gravitational technology offers a possible remedy.
  • Foundations of fluid mechanics, or of beakers, bottles and people
    • The article introduces fluid mechanics and explains how the cerebrospinal fluid works in the human brain. It explains the hydrodynamics in the shunt system and shows why the circulation and pressure of the cerebrospinal fluid are important factors for optimizing shunt therapies.

miniNAV®

The smallest differential pressure valve

For the treatment of HC in premature and newborn babies and recumbent patients

miniNAV
FEATURES
FUNCTIONALITY
PRESSURE LEVEL DETECTION
Downloads
CONTACT

miniNAV®

FEATURES

  • smallest differential pressure valve with reliable drainage control for the treatment of hydrocephalus, especially in premature and newborn babies or lying patients

  • very small, slim, cylindrical design for easy implantation

  • MRT compatible up to 3 Tesla

  • precise precision engineering

  • robust and durable due to the use of titanium

miniNAV®

FUNCTIONALITY

The miniNAV was developed with the aim of offering the smallest possible valve with solid drainage control and at the same time avoiding the well-known problems such as blockage and dependence on subcutaneous pressure.

The figure shows a schematic drawing of the miniNAV. The valve consists of a stable titanium housing with an integrated ball-cone valve. A spiral spring determines the opening pressure of the ball-cone valve. The sapphire ball guarantees a precise closure. A connector or a silicone catheter can be connected to the distal end of the valve. The connecting nozzles for the inlet and outlet are also made of titanium.

The illustration below shows the miniNAV and how the valve works: If the ball-and-cone valve is closed, CSF drainage is not possible. If the intraventricular pressure increases, this force acts on the ball-cone valve and finally causes the spring to give way and a gap to form between the cone and the ball, which now allows the cerebrospinal fluid to flow.

Flow direction

Ball-cone valve closed

Ball-cone valve opened. Liquor flow possible.

PRESSURE LEVEL DETECTION IN X-RAY IMAGE

Each preset pressure stage is specially coded and can be recognized postoperatively in imaging. The lower illustrations show the X-ray images of all available pressure stages of the miniNAV (0, 5, 10 and 15 cmH2O):

 

pressure stage 0 cmH2O

 

 

pressure stage 5 cmH2O

 

 

pressure stage 10 cmH2O

 

 

pressure stage 15 cmH2O

 

 

 

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

 

   

minNAV®

Product downloads

 

Download Area

 

 

Doctor on rounds

OUR MIETHKE PRODUCT FINDER

The product finder quickly filters the relevant criteria using targeted, short questions.

We consider the individual patient situation, surgical technique and treatment plan. The questions are designed in such a way that the list of results provides a maximum of three product recommendations.

 

FURTHER INFORMATION

DO YOU HAVE ANY QUESTIONS ABOUT THE PRODUCT?
WE ARE THERE FOR YOU

+49 331 620 83 0
info@miethke.com

Thoralf Knitter

Director Product Development

Roland Schulz

Director Product Management

Thammo Weise

Product Management

Andreas Bunge

Product Management

Michaela Funk-Neubarth

Head of Marketing

Jan Mügel

Product Management

Josefine Kehl

Press & Public Relations

August von Hardenberg

Management Consultant

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Patientin und Ingenieure sind gemeinsam abgebildet

OUR PARTNERSHIP
WITH B. BRAUN

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:

www.bbraun.com