A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
326/12, 314/42
A61B 5/04 (2006.01) A61B 5/0432 (2006.01) G01D 9/28 (2006.01)
Patent
CA 1095595
A B S T R A C T An improved graphical recorder display system for obtaining an accurate record of one or more sensed and dis- played parameter values, such as associated with one or more vital signs of a patient. The system includes a writing surface medium, such as a chart paper on a drum; means for advancing the writing surface medium relative to a galvano- meter pen means, the pen means being adapted for scribing on the writing surfaces in a direction transverse to the direction of relative advance of the chart paper; means for generating time-incremented electrical signals for extension to the gal- vanometer pen means during a predetermined period for scribing a graticule on the chart paper; means, such as a dither signal, one or more cursors on the chart paper; and means providing con- trol signals representative of one or more respective vital sign parameter values for controlling the application of the dither signal to the galvanometer pen means such that the resulting cursors are in accurately timed relation to the grati- cule. The dither signal is available in different amplitudes for selection by respective different parameter value signals such that the scribed cursor associated with the respective parameter values differ from one another in appearance. Further, the intensity of the scribed trace may be varied.
275588
American Optical Corporation
Macrae & Co.
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