véase [[derivación]] **Shunts Programables líderes en el mercado** **Pro GAV ProSA (Miethke)** http://www.miethke.com/english/3_produkte/3_1_produkte/3_1_produkte.html **Strata (Medtronic)** http://www.medtronic.com/for-healthcare-professionals/products-therapies/neurological/shunts/strata-adjustable-pressure-valve/index.htm **Certas (De Puy Johnsons & Johnsons)** http://www.depuy.com/healthcare-professionals/news/new-codman-certas-programmable-valve-hydrocephalus-now-available-europ **Polaris Sophysa** http://www.sophysa.com/sophysa-neurosurgical-shunts-adjustable-valves_121.html [[polaris|Polaris]]