Cartridges, kits, and methods for enhanced detection and quantification of analytes
Devices, systems, and methods for detecting molecules of interest within a collected sample are described herein. In certain embodiments, self-contained sample analysis systems are disclosed, which include a reusable reader component, a disposable cartridge component, and a disposable sample collection component. The reader component may communicate with a remote computing device for the digital transmission of test protocols and test results. In various disclosed embodiments, the systems, components, and methods are configured to identify the presence, absence, and/or quantity of particular nucleic acids, proteins, or other analytes of interest, for example, in order to test for the presence of one or more pathogens or contaminants in a sample.
1. A shuttle for delivering a sample and reagents through an input tunnel and to a reservoir of a microfluidic cartridge, the shuttle comprising:
a first end portion comprising a first cylindrical structure;
a second end portion comprising a second cylindrical structure comprising a substantially circular wall defining an opening configured to receive a sample collected by a sample collection device, the substantially circular wall extending entirely around the opening;
a beam coupled to and extending between the first cylindrical structure and the second cylindrical structure;
a sample compartment defined by the first end portion, the second end portion, and the beam, the sample compartment configured to receive the sample through the opening of the second end portion; and
a reagent ball compartment between the first end portion and the second end portion, the reagent ball compartment configured to house a reagent ball comprising reagents,
wherein the shuttle is configured to move when subjected to a force greater than a threshold force from a first position to a second position where the reagent ball compartment and the sample compartment are exposed to fluid in the reservoir.
2. The shuttle of claim 1 , further comprising a compartment divider coupled to and extending from the beam, the compartment divider dividing the sample compartment from the reagent ball compartment, the compartment divider optionally including a slot configured to promote mixing of the fluid when disposed within the reservoir in the second position.
3. The shuttle of claim 1 , wherein the second end portion is configured to wipe excess sample from a tip of the sample collection device inserted in the opening so that, at most, a predetermined volume of the sample is mixed in the fluid within the reservoir, or
wherein the opening of the second end is configured to receive the sample compressed from the sample collection device.
4. The shuttle of claim 1 , wherein the first end comprises one or more sealing members to enhance a liquid-tight seal.
5. The shuttle of claim 2 , wherein the area between the first end and the compartment divider defines the reagent ball compartment.
6. The shuttle of claim 1 , wherein the second end comprises one or more sealing members to enhance a liquid-tight seal.