Cartridge device with segmented fluidics for assaying coagulation 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 conduit at the first junction and configured to receive the second segment of the biological sample, the second conduit comprising a second sensor region comprising a second sensor,a first flow restrictor downstream of the first junction and upstream of the second sensor region and a second reagent; 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 independently mix the first segment of the biological sample in the first conduit to dissolve the first reagent into the first segment of the biological sample and mix the second segment of the biological sample in the second conduit to dissolve the second reagent into the second segment of the biological sample; and
to independently position the first segment of the biological sample over the first sensor region and position the second segment of the biological sample over the second sensor region;
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 segmented fluidics and methods for assaying coagulation in a fluid sample received within the segmented fluidics. For example, the present invention may be directed to 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 first flow restrictor region, a second reagent, and a second sensor region. The sample analysis cartridge further includes a pump configured to independently mix the first segment in the second conduit and the second segment in the third conduit, and independently position the first segment over the first sensor region and position the second segment over the second sensor region.
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Citations
19 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 conduit at the first junction and configured to receive the second segment of the biological sample, the second conduit comprising a second sensor region comprising a second sensor, a first flow restrictor downstream of the first junction and upstream of the second sensor region and a second reagent; 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 independently mix the first segment of the biological sample in the first conduit to dissolve the first reagent into the first segment of the biological sample and mix the second segment of the biological sample in the second conduit to dissolve the second reagent into the second segment of the biological sample; and to independently position the first segment of the biological sample over the first sensor region and position the second segment of the biological sample over the second sensor region; 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification