An Ombredanne inhaler with its original rubber mask and caecum bladder.

Professor Louis Ombredanne (1871-1956), the inventor of the apparatus, was a French Surgeon who introduced his ether breathing apparatus in 1908 and it was subsequently widely used throughout Europe. They were made by various makers in the early 1900s. This fine example is signed “Aesculap”

• From the Phisick collection