Carl Reiner GmbH is an Austrian manufacturer of Jet Ventilators for OR and ICU environments. Originally founded in 1912 the company has a long history in manufacturing ENT instruments for nearby hospitals in the city centre of Vienna, as well as in distribution of medical devices for the Austrian market. In 1989 Carl Reiner GmbH launched its first High-Frequency Jet ventilator. Since then it has laid the foundation for the international adoption of S-HFJV (Superimposed High-Frequency Jet Ventilation). The culmination of these endeavours have resulted in the success of today’s Twinstream and Twinstream ICU ventilators in 40+ countries worldwide.