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US 2024/0201217 A1Published application
Method of washing a fluidic system of an in-vitro diagnostic analyzer
AssigneeRoche Diagnostics Operations, Inc.
InventorMartin Thomas
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AssigneeRoche Diagnostics Operations, Inc.
InventorMartin Thomas
Estimating the term…
An automated method of washing a fluidic system 210 of an IVD analyzer 200 from a previous fluid is disclosed, the fluidic system 210 comprising at least one fluidic path 211, 213, 215. The method comprises controlling by a controller 250 a pump 240 and at least one fluid-selection valve 230 for pumping a wash fluid 221 and/or air 232 through the at least one fluidic path, wherein in a time-priority mode 10 the method comprises pumping at higher speed air, in a first step 11, in order to remove the previous fluid from the at least one fluidic path, and wash-fluid plugs alternated to air plugs, in a second step 12, in order to wash out residuals of the previous fluid, and wherein in a wash-fluid-priority mode 20 the controller 250 is configured to operate according to either a sample-wash mode 30 if the previous fluid is a sample 2 or according to an other-fluid-wash mode 40 if the previous fluid is any fluid other than a sample 2, wherein in the sample-wash mode 30 the method comprises pumping air at lower speed, in a first step 31, in order to remove the previous fluid from the at least one fluidic path, pumping at least one wash-fluid plug at higher speed, in a second step 32, and pumping wash-fluid plugs alternated to air plugs at lower speed, in a third step 33, in order to wash out residuals of the previous fluid, and wherein in the other-fluid-wash mode 40 the method comprises pumping air at lower speed, in a first step 41, in order to remove the previous fluid from the at least one fluidic path and pumping wash-fluid plugs alternated to air plugs at lower speed, in a second step 42, in order to wash out residuals of the previous fluid.
An automated method of washing a fluidic system of an in-vitro diagnostic (IVD) analyzer from a previous fluid, the fluidic system comprising at least one fluidic path, the IVD analyzer further comprising at least one fluid-selection valve for selecting between fluids including a wash fluid and air, a pump and a controller configured to operate according to either a time-priority mode or a wash-fluid-priority mode, the method comprising controlling by the controller the pump and the at least one fluid-selection valve for pumping the wash fluid and/or air through the at least one fluidic path, wherein in the time-priority mode the method comprises pumping at higher speed air, in a first step, in order to remove the previous fluid from the at least one fluidic path, and wash-fluid plugs alternated to air plugs, in a second step, in order to wash out residuals of the previous fluid, and wherein in the wash-fluid-priority mode the controller is configured to operate according to either a sample-wash mode if the previous fluid is a sample or according to an other-fluid-wash mode if the previous fluid is any fluid other than a sample, wherein in the sample-wash mode the method comprises pumping air at lower speed, in a first step, in order to remove the previous fluid from the at least one fluidic path, pumping at least one wash-fluid plug at higher speed, in a second step, and pumping wash-fluid plugs alternated to air plugs at lower speed, in a third step, in order to wash out residuals of the previous fluid, and wherein in the other-fluid-wash mode the method comprises pumping air at lower speed, in a first step, in order to remove the previous fluid from the at least one fluidic path and pumping wash-fluid plugs alternated to air plugs at lower speed, in a second step, in order to wash out residuals of the previous fluid.
An in-vitro diagnostic (IVD) analyzer comprising a fluidic system comprising at least one fluidic path, the IVD analyzer further comprising at least one fluid-selection valve for selecting between fluids including a wash fluid and air, a pump and a controller configured to wash the at least one fluidic path from a previous fluid by controlling the pump and the at least one fluid-selection valve for pumping the wash fluid and/or air through the at least one fluidic path, wherein the controller is configured to operate according to either a time-priority mode or a wash-fluid-priority mode, wherein in the time-priority mode the controller is configured to pump at higher speed air, in a first step, in order to remove the previous fluid from the at least one fluidic path and wash-fluid plugs alternated to air plugs, in a second step, in order to wash out residuals of the previous fluid, and wherein in the wash-fluid-priority mode the controller is configured to operate according to a sample-wash mode if the previous fluid is a sample or according to an other-fluid-wash mode if the previous fluid is any fluid other than a sample, wherein in the sample-wash mode the controller is configured to pump air at lower speed, in a first step, in order to remove the previous fluid from the at least one fluidic path, to pump at least one wash-fluid plug at higher speed, in a second step, and to pump wash-fluid plugs alternated to air plugs at lower speed, in a third step, in order to wash out residuals of the previous fluid, and wherein in the other-fluid-wash mode the controller is configured to pump air at lower speed, in a first step, in order to remove the previous fluid from the at least one fluidic path and to pump wash-fluid plugs alternated to air plugs at lower speed, in a second step, in order to wash out residuals of the previous fluid.
Dependencies are inferred from the claim text.