The Wade-Dahl-Till (WDT) valve is a cerebral shunt developed in 1962 by hydraulic engineer Stanley Wade, author Roald Dahl and neurosurgeon Kenneth Till. In 1960, Dahl's son Theo developed hydrocephalus after being struck by a car. A standard Holter shunt was installed to drain excess fluid from his brain; however the shunt jammed too often, causing pain and blindness, risking brain damage and requiring emergency surgery. Till determined that debris accumulated in the hydrocephalic ventricles could clog the slits in the Holter valves, especially with patients, such as Theo, who had had bleeding in the brain.
roald dahl. he didnt have a middle name.
Roald
No, Roald Dahl is not single.
Roald Dahl's father died in 1920 at the age of 57. Roald was 3 years old at the time of his father's death.
Roald Dahl's middle name is Dahl.
roald dahl is 6foot 6
He was born Roald Dahl.
Yes. Roald Dahl was a man.
He was born Roald Dahl.
Roald Dahl was born in Cardiff, Wales.Roald Dahl came from smethick.
people rember him because he wrote books and bought a joy to lives
roald dahl's best subject is reading roald dahl's best subject is reading