Henry Edmund Gaskin Boyle

Henry Edmund Gaskin Boyle (born 2 April 1875, died 15 October 1941) was a pioneering anaesthesiologist. Originally born in Barbados; he qualified MRCS LRCP from St Bartholomew's Hospital, London. He is best remembered for the development of early anaesthetic machines. Even until recently, an anaesthesia machine for administering general anaesthesia would often be referred to as a "Boyle's Machine" in honour of his contribution in this field. His  design included cylinders for medical oxygen, nitrous oxide and a "Boyle's Bottle" to vaporize diethyl ether. His other contribution to anaesthesia included the Boyle-Davis gag, which is still used today during tonsillectomy operations.