Electronically controlled intravenous fluid infusion device
First Claim
1. An electronically controlled infusion device for controlling fluid to be infused intravenously in the treatment of a patient, comprising:
- at least one manually operated control for producing a signal generated by manual operation of the control to set at least one fluid infusion operating parameter; and
means for producing an extent of change in said operating parameter for a given extent of movement of said at least one control in dependence upon the speed with which the as least one control is manually operated.
1 Assignment
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Accused Products
Abstract
A microprocessor controlled volumetric infusion pump is set as to volume and rate of infusion by two digipots (shaft encoders) each having sixteen detented positioned in 360 degrees. The microprocessor is programmed such that the extent to which the parameter is changed for a given rotation of its setting digipot depends on the speed with which the digipot is rotated. For slow or normal rotation, unit change in parameter is produced for each detented position traversed. Faster rotation causes the setting to jump from one to the next of a series of preselected preferred settings, irrespective of the number of detented positions traversed. The direction of rotation determines whether the setting increases or decreases.
117 Citations
10 Claims
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1. An electronically controlled infusion device for controlling fluid to be infused intravenously in the treatment of a patient, comprising:
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at least one manually operated control for producing a signal generated by manual operation of the control to set at least one fluid infusion operating parameter; and means for producing an extent of change in said operating parameter for a given extent of movement of said at least one control in dependence upon the speed with which the as least one control is manually operated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification