British Journal of Anaesthesia, 1962, Vol. 34, No. 6 410-416
© 1962 The Board of Management and Trustees of the British Journal of Anaesthesia
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A NEW AND VERSATILE CLOSED CIRCUIT ANAESTHETIC MACHINE WITH AUTOMATIC AND MANUAL VENTILATION
Group 20, Coventry Hospitals
Cape Engineering Company Ltd. Warwick, England
A versatile new anaesthetic machine embodying a ventilator with automatic and manual closed circuits, and with provision for semi-open circuits is described.
The ventilator follows the principle of volume and time cycling and generally requires only a low flow of fresh gases (about 2 l./min). It is based on the original Smith-Clarke intermittent positive/negative pressure respirator and is both simple and practical. It is intended later to present a further paper describing clinical experience with this machine.