Born: Copenhagen, Denmark
Medical training: Royal Dental College, University of Copenhagen
Hobbies: Professional dancer, excelled at the tango, toured the Danish provinces with a well-known Danish singer.
Outstanding athlete and master swordsman, he won a bronze medal for fencing in the 1930 European Championships as part of the Danish national team.
Magician, illusionist, mind reader and a member of the Danish Magic Circle.
Achievements: Produced a valve for positive end-expiratory pressure.
Designed the Ruben valve with a watchmaker which required only one hand, an automatic syringe pump for controlled delivery of drugs in a small volume of liquid, and designed the first self-inflating bag-valve-mask .
Constructed the first manikin for resuscitation training, modified in 1960 for training in closed-chest cardiac massage.
Honorary Member of the AAGBI in 1976.
Fellow by election of the Royal College of Anaesthetists.
Professor of Anaesthesia, University of Copenhagen.
Interesting facts: He was a member of the underground during the Second World War and had to flee to Sweden from occupied Denmark in 1943 in a fishing boat.