Detection and fluidic system of a flow cytometer
First Claim
1. A fluidic system for drawing sample fluid from a sample container, into an interrogation zone of a flow cytometer, comprising:
- a sheath pump that pumps sheath fluid at a sheath flow rate from a sheath container through a flow cell into the interrogation zone of the flow cytometer, wherein the flow cell is fluidically coupled to the sample container;
a waste pump that pumps waste fluid at a waste flow rate from the interrogation zone into a waste container;
wherein the sheath flow rate is different from the waste flow rate, thereby creating a pressure differential, andwherein the pressure differential draws the sample fluid from the sample container, through the flow cell with the sheath fluid into the interrogation zone at a sample flow rate;
a detection system coupled to the interrogation zone that provides a data set of input signals from the sample fluid;
an analysis engine that recognizes aggregate particle events in the data set; and
a controller that automatically adjusts the sample flow rate based on the recognition of aggregate particle events by controlling at least one of the sheath flow rate and the waste flow rate to adjust the pressure differential.
1 Assignment
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Accused Products
Abstract
The fluidic system including a sheath pump that pumps sheath fluid from a sheath container into an interrogation zone, a waste pump that pumps waste fluid from the interrogation zone to a waste container, in which the flow rate of the sheath fluid is different from the flow rate of the waste fluid thereby drawing a sample fluid from a sample container into the interrogation zone, a detection system that provides a data set of input signals from the sample fluid, an analysis engine that recognizes aggregate particle events in the data set, and a controller that automatically adjusts the flow rate of the sample fluid into the interrogation zone based on the recognition of aggregate particle events, by controlling at least one of the flow rates of the sheath fluid and the waste fluid.
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Citations
20 Claims
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1. A fluidic system for drawing sample fluid from a sample container, into an interrogation zone of a flow cytometer, comprising:
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a sheath pump that pumps sheath fluid at a sheath flow rate from a sheath container through a flow cell into the interrogation zone of the flow cytometer, wherein the flow cell is fluidically coupled to the sample container; a waste pump that pumps waste fluid at a waste flow rate from the interrogation zone into a waste container; wherein the sheath flow rate is different from the waste flow rate, thereby creating a pressure differential, and wherein the pressure differential draws the sample fluid from the sample container, through the flow cell with the sheath fluid into the interrogation zone at a sample flow rate; a detection system coupled to the interrogation zone that provides a data set of input signals from the sample fluid; an analysis engine that recognizes aggregate particle events in the data set; and a controller that automatically adjusts the sample flow rate based on the recognition of aggregate particle events by controlling at least one of the sheath flow rate and the waste flow rate to adjust the pressure differential. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for drawing sample fluid from a sample container into an interrogation zone of a flow cytometer, comprising:
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simultaneously pumping sheath fluid at a sheath flow rate from a sheath container through a flow cell, fluidicially coupled to the sample container, into the interrogation zone of the flow cytometer and pumping waste fluid at a waste flow rate from the interrogation zone into a waste container, wherein the sheath flow rate is different from the waste flow rate, thereby creating a pressure differential, and wherein the pressure differential draws the sample fluid from the sample container, through the flow cell with the sheath fluid into the interrogation zone at a sample flow rate; collecting a data set of input signals from the sample fluid; recognizing aggregate particle events in the data set with use of an algorithm; and automatically adjusting the sample flow rate based on the recognition of aggregate particle events in the data set, wherein adjusting the sample flow rate includes controlling at least one of the sheath flow rate and waste flow rate to adjust the pressure differential. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification