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Anaesthesia


Title:The digital control of anaesthetic gas flow
Author(s):Boaden, R. W. Hutton, P.
Address:
Year:1986 Apr
Journal Title:Anaesthesia
Page Number:413-8
Language:eng
Volume:41
Issue:4
ISSN/ISBN:0003-2409 (Print). 0003-2409 (Linking)
Abstract:The theory and construction of a prototype digital gas flow controller are described. Using eight preset needle valves, it has the ability to deliver any flow from 50 to 12750 ml/minute in steps of 50 ml/minute. Under given conditions, the accuracy of this device is very high and its variation in performance with pipeline supply pressures is quantified. The required flow is requested from a BBC 'B' microcomputer which is interfaced with the equipment via a program written in Basic and the 1MHz bus port. The possible uses and potential of a microcomputer-controlled flow regulator in anaesthesia and intensive care are discussed.

 
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