The Medtronic Strata® valve is an adjustable ball and spring valve. The tension of the valve’s spring can be altered utilizing a magnetic rotor mechanism integral to the valve. This adjustment is made non-invasively utilizing the hand-held StrataVarus adjustment tool to alter the magnetic rotor’s position and thus tension of the valve’s spring. The Strata NSC contains the adjustable pressure differential ball and spring valve while the Strata II also contains a Delta siphon control device.
Valve Designs
Strata® NSC Valve, Regular:
Strata® NSC Valve, Small:
Strata® II Valve, Regular:
Strata® II Valve, Small:
Radiographic Images
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 Regular Valve |
 Regular Valve |
 Small Valve |
 Small Valve |
Valve Opening Pressures
Strata Valve Setting:
Strata NSC Valve
Strata II Valve
Valve Dimensions
Shunt Configurations
Medtronic Strata® valve is a Registered Trademark of Medtronic PS Medical, Inc.
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