Strata
Adjustable Pressure Valve
PS Medical Strata Shunt

Strata Adjustable Pressure Valve

Strata® Adjustable Pressure Valve provides innovative technology for the treatment of hydrocephalus.

About the Strata Adjustable Pressure Valve

Used for the treatment of hydrocephalus in children and adults, the PS Medical® Strata® Adjustable Pressure Valve diverts excess cerebrospinal fluid (CSF) from the cerebral ventricles to another part of the body where it can be absorbed. Its main feature is the ability for the caregiver to change the pressure/flow performance level settings of the valve without the need for a revision surgery.

The PS Medical Strata Adjustable Valve is a combination of the Strata Adjustable Pressure Valve and a proximal (ventricular) and a distal (peritoneal or atrial) catheter. Part of the Strata Valve is the Delta® Chamber – a siphon-control device that is a normally closed mechanism which opens in response to positive ventricular pressure, but stays closed in response to negative distal pressure.

  • Pressure/flow performance level setting can be adjusted or verified simply and non-invasively in the physician’s office with hand-held adjustment tools
  • Designed to maintain the equilibrium of CSF pressure regardless of the patient’s body posture or flow control requirements
  • Available in standard and small models
  • Injectable reservoir dome
  • Proximal and distal occluders for selective flushing
  • Latex free

How the Strata Adjustable Pressure Valve Works

The Strata valve diverts excess cerebrospinal fluid (CSF) from the ventricles of the brain to another area of the body – usually the peritoneal cavity or right atrium of the heart. The Strata valve uses a patented technology that utilizes a magnetic rotor to adjust the tension on a ball and spring valve mechanism, allowing for five separate pressure/flow performance level settings. The pressure/flow performance level setting can be changed non-invasively by using one of the Strata Adjustment Systems, which use magnets to change the pressure/flow performance level and sensors to verify the new setting.

The Strata valve also includes a siphon-control device, the Delta® Chamber. This device is a normally closed mechanism which opens in response to positive ventricular pressure, but stays closed in response to negative distal catheter pressure.

Important Safety Information

In addition to the risks associated with any brain surgical procedure, such as bleeding, damage to surrounding brain tissue, seizures, stroke, or death, the following complications may also occur: obstruction of the system, infection, and mechanical malfunction leading to overdrainage. These common complications can lead to serious risks and should be treated as promptly as possible. It is important to review the product labeling for complete safety information, potential complications, contraindications, and a complete explanation of warnings and precautions.

Last updated: 9 Jan 2013

For Patients

The Hydrocephelus Association is a helpful resource for patients and their families.

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