Playing baseball

Strata Valves

Normal Pressure Hydrocephalus (NPH)


Strata Valve


Strata® adjustable pressure valves are part of a shunt system used to treat the symptoms of hydrocephalus. A shunt redirects excess cerebrospinal fluid in the brain to another part of the body, allowing the brain’s enlarged ventricles to return to a more normal size.

Key Features

Noni-nvasive Adjustment
Non-invasive pressure setting adjustment may reduce the need for revision surgeries.

Over Drainage Protection
Optional Delta Chamber allows pressure in the brain to be maintained within a certain range, regardless of body position.

Easy Check Ups
Reservoir dome allows your doctor to sample cerebrospinal fluid and test shunt function.

Contoured reservoir base mimics the curvature of the skull, providing a better fit.

No X-ray Verification
Easy-to-use hand tools allow for verification of pressure setting without the need of an x-ray.


The valve is placed behind the ear or near the top of the head. It’s attached to a ventricular catheter on one side, and a distal catheter on the other.


The device is not shown actual size. Other sizes may be available.

Height 0.63" (1.6 cm)
Width 1.85" (4.7 cm)
Depth 0.28" (0.7 cm)

Attention Patients!

This therapy is not for everyone. Please consult your physician. A prescription is required. For more information, please contact us at +44 (0) 1923 212 213

Attention Physicians!

For further information, please call Medtronic UK & Ireland at +44 (0) 1923 212 213, or contact your Medtronic NT sales representative.

The device that appears in this graphic is a representation of a Medtronic device. The graphic does not include certain identifying information that may appear on Medtronic devices, such as model number or serial number.


Since the Strata valve includes a magnet, special precautions must be observed around magnetic sources such as some audio headphones. Common environmental levels of electromagnetic radiation generated by security scanners, metal detectors, microwave ovens, mobile telephones, high voltage lines, computers, and transformers will not affect the valve.

If a device is known to contain a magnet, keep it away from the immediate valve location i.e., the skin next to the valve. For patients that are undergoing an MRI procedure, it will be necessary for the doctor to check the valve pressure setting afterwards and readjust it if necessary.

Information on this site should not be used as a substitute for talking with your doctor. Always talk with your doctor about diagnosis and treatment information.