Diagnostic devices, systems, and methods
First Claim
1. A handheld diagnostic system, comprising:
- a reagent cassette comprising a microfluidic network having an inlet, an outlet, and a detection region, the detection region including at least one detection zone; and
a diagnostic dongle comprising a recess, a manually-actuated pressure system configured to generate negative pressure and store the negative pressure in a pressure chamber, at least one light source, at least one photodetector, a control module, and an input/output connector; and
a smartphone or personal digital assistant (PDA) coupled to the input/output connector of the diagnostic dongle and configured to provide electrical power to the diagnostic dongle and to transmit data from the diagnostic dongle;
wherein the at least one detection zone is aligned with a respective photodetector when the reagent cassette is inserted into the recess of the diagnostic dongle;
wherein the manually-actuated pressure system is configured to apply the negative pressure to the microfluidic network of the reagent cassette to move fluids therethrough;
wherein the reagent cassette includes reagents and/or a lysis agent for whole blood; and
wherein the control module is programmed to control the at least one light source and the at least one photodetector to interrogate the respective detection zone to perform at least one of a colorimetric assay, an immunoassay, an electrochemical assay, and absorbance detection.
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Accused Products
Abstract
Diagnostic systems, methods, and devices employing low-cost handheld components are disclosed herein. A diagnostic system can include a diagnostic device that is configured to perform one or more assays on a fluid sample, such as a whole blood sample, in one or more microfluidic channels or chambers. The diagnostic device can move the fluid sample into or through the one or more microfluidic channels or chambers without using any electrical power, for example, using manual actuation to generate a positive or negative pressure within the diagnostic device. The diagnostic device can have a connector for interfacing with a separate handheld unit that can provide power and data processing. For example, the separate handheld unit can be a smartphone or PDA, and the connector can interface with an existing input/output port of the unit to draw power and/or transmit data.
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Citations
24 Claims
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1. A handheld diagnostic system, comprising:
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a reagent cassette comprising a microfluidic network having an inlet, an outlet, and a detection region, the detection region including at least one detection zone; and a diagnostic dongle comprising a recess, a manually-actuated pressure system configured to generate negative pressure and store the negative pressure in a pressure chamber, at least one light source, at least one photodetector, a control module, and an input/output connector; and a smartphone or personal digital assistant (PDA) coupled to the input/output connector of the diagnostic dongle and configured to provide electrical power to the diagnostic dongle and to transmit data from the diagnostic dongle; wherein the at least one detection zone is aligned with a respective photodetector when the reagent cassette is inserted into the recess of the diagnostic dongle; wherein the manually-actuated pressure system is configured to apply the negative pressure to the microfluidic network of the reagent cassette to move fluids therethrough; wherein the reagent cassette includes reagents and/or a lysis agent for whole blood; and wherein the control module is programmed to control the at least one light source and the at least one photodetector to interrogate the respective detection zone to perform at least one of a colorimetric assay, an immunoassay, an electrochemical assay, and absorbance detection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A diagnostic method, comprising:
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using one hand to hold and manually actuate a manually-actuated pressure system of a diagnostic device to generate a negative pressure and store the negative pressure in a pressure chamber, and which pulls a sample into a detection zone of a reagent cassette; performing an assay on the sample in the detection zone to generate data; and transmitting said data from the diagnostic device to a smart-enabled device via a connection dongle disposed between the diagnostic device and the smart-enabled device while also receiving power for the diagnostic device via said connection dongle. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification