EMO Vaporiser (Sectioned)
Invented circa 1953 by Dr Hans Epstein (physicist) and Prof Robert Macintosh at the Nuffield Dept Anaesthetics in Oxford, EMO referring to Epstein-Macintosh-Oxford. Early prototypes were built by Senior Technician Richard Salt. It was designed as a simple ether draw-over apparatus using air as the carrier. The vaporiser is thermo-compensated by virtue of an integral water bath which acts as a heat sink and also an ether containing thermo-compensator which expanded or contracted according to vaporiser temperature. The Vaporiser could be used with the Oxford Inflating Bellows for IPPV, and with an OMV for induction with halothane. The sectioned example was donated by the Hunterian Museum of the Royal College of Surgeons in London.

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