Henry Gaskin Boyle’s 1917 anaesthetic machine was the basis for a range of British anaesthetic machines. This example has meters for measuring gas flow, an oxygen failure warning device and a sphygmomanometer to measure blood pressure. Made by The British Oxygen Co Ltd, the machine was used at Airedale General Hospital, West Yorkshire, England.
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Glossary: anaesthetic machine
An agent that causes insensitivity to pain. Applied to either the whole body (general anaesthetic) or a particular area or region (local anaesthetic).
An instrument used by medical staff to measure blood pressure. Usually made up of a cuff which is placed around the arm of a patient, and a measuring unit that shows the patient's blood pressure.