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专利名称：Displacement sensor and medical apparatus发明人：Edmund S. Smith,John Davies申请号：US07/540314申请日：19900618公开号：US05069221A公开日：19911203
摘要：A displacement sensor which is battery operated and suitable for use as arespiratory monitor to detect the onset of apnoea in infants or post operative patients isdisclosed. The sensing device is easily attached to the patient by an elasticated belt,together with associated monitoring electronics in which the sensor signal is comparedwith a floating reference level in a level detector which is connected through a NANDgate 3 to prevent a timer 4 timing out while respiration signals are present. Cessation ofrespiratory movement for greater than 10 or 20 seconds is indicated by both audible andvisual alarms 14 and 15. In another embodiment the sensor can be used to detect eyemovements in a patient. Medical monitoring apparatus is also provided, said apparatusincluding a heart rate monitoring means and/or respiration monitoring means.
申请人：DENSA LIMITED
代理人：Grant L. Hubbard
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