Cartridge device with fluidic junctions for coagulation assays in fluid samples
First Claim
1. A sample analysis cartridge comprising:
- an inlet chamber configured to receive a biological sample;
a conduit fluidically connected to the inlet chamber and configured to receive the biological sample from the inlet chamber, the conduit splitting at a first junction into a first conduit and a second conduit configured to split the biological sample into at least first and second segments;
the first conduit fluidically connected to the conduit at the first junction and configured to receive the first segment of the biological sample, the first conduit comprising a first reagent, a first sensor region comprising a first sensor, and a first fluidic lock valve downstream of the first sensor region;
the second conduit fluidically connected to the first conduit at the first junction and configured to receive the second segment of the biological sample, the second conduit comprising a second reagent, a second sensor region comprising a second sensor, and a second fluidic lock valve downstream of the second sensor region;
wherein the second conduit further comprises a flow restrictor downstream of the first junction and upstream of the second sensor region, configured to cause the biological sample to preferential enter the first conduit and form the first segment of the biological sample; and
an air bladder connected to the inlet chamber and forming a part of a pump configured, during operation;
to displace fluids within conduits of the sample analysis cartridge;
to push the first segment of the biological sample over the first sensor region to the first fluidic lock valve, such that the first segment of the biological sample is locked within the first conduit; and
to push the second segment of the biological sample over the second sensor region to the second fluidic lock valve, such that the second segment of the biological sample is locked within the second conduit;
wherein the first sensor region comprises at least one prothrombin time sensor, and the second sensor region comprises at least one activated partial thromboplastin time sensor;
wherein the first reagent comprises a first thrombin-cleavable peptide with a detectable moiety, and the second reagent comprises a second thrombin-cleavable peptide with a detectable moiety; and
wherein the first reagent is different from the second reagent.
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Accused Products
Abstract
The present invention relates to analytical testing devices comprising fluidic junctions and methods for assaying coagulation in a fluid sample received within the fluidic junctions. For example, the present invention may be directed to a sample analysis cartridge including an inlet chamber, a first conduit comprising a first junction configured to split a biological sample into at least first and second segments, a second conduit comprising a first reagent, a first sensor region, and a first fluidic lock valve, and a third conduit comprising a second reagent, a second sensor region, and a second fluidic lock valve. The sample analysis cartridge further includes a pump configured to push the first segment over the first sensor region to the first fluidic lock valve, and push the second segment over the second sensor region to the second fluidic lock valve.
85 Citations
17 Claims
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1. A sample analysis cartridge comprising:
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an inlet chamber configured to receive a biological sample; a conduit fluidically connected to the inlet chamber and configured to receive the biological sample from the inlet chamber, the conduit splitting at a first junction into a first conduit and a second conduit configured to split the biological sample into at least first and second segments; the first conduit fluidically connected to the conduit at the first junction and configured to receive the first segment of the biological sample, the first conduit comprising a first reagent, a first sensor region comprising a first sensor, and a first fluidic lock valve downstream of the first sensor region; the second conduit fluidically connected to the first conduit at the first junction and configured to receive the second segment of the biological sample, the second conduit comprising a second reagent, a second sensor region comprising a second sensor, and a second fluidic lock valve downstream of the second sensor region; wherein the second conduit further comprises a flow restrictor downstream of the first junction and upstream of the second sensor region, configured to cause the biological sample to preferential enter the first conduit and form the first segment of the biological sample; and an air bladder connected to the inlet chamber and forming a part of a pump configured, during operation; to displace fluids within conduits of the sample analysis cartridge; to push the first segment of the biological sample over the first sensor region to the first fluidic lock valve, such that the first segment of the biological sample is locked within the first conduit; and to push the second segment of the biological sample over the second sensor region to the second fluidic lock valve, such that the second segment of the biological sample is locked within the second conduit; wherein the first sensor region comprises at least one prothrombin time sensor, and the second sensor region comprises at least one activated partial thromboplastin time sensor;
wherein the first reagent comprises a first thrombin-cleavable peptide with a detectable moiety, and the second reagent comprises a second thrombin-cleavable peptide with a detectable moiety; andwherein the first reagent is different from the second reagent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification