Abstract: A disposable cassette for detecting nucleic acids or performing other assays. The cassette can be inserted into a base station during use. The cassette has numerous features to ensure correct operation of the device under gravity, such as vent pockets for enabling the flow of sample fluid from one chamber to the next when the vent pocket is unsealed. The vent pockets have protrusions to help prevent accidental resealing. The cassette also can have a gasket to ensure free air movement between open vent pockets. A flexible circuit with patterned metallic electrical components disposed on a heat stable material can be in direct contact with fluid in the chambers and has resistive heating elements aligned with the vent pockets and the chambers.

Abstract: Described herein are methods for producing dried reagent: substrate complexes suitable for use in various types of assays. Specifically, the surface of the substrate can be modified such that subsequent lyophilization of the reagent on the substrate's surface can result in the dried reagent being anchored to the substrate's surface.

Abstract: An automated method for performing an assay of the present disclosure can be performed in a microfluidic device that is a lateral flow device having numerous features to ensure correct operation of the device under gravity, such as vent pockets for enabling the flow of sample fluid from one chamber to the next when the vent pocket is unsealed. Each chamber can have a reagent recess proximal to an inlet end of the chamber. A reagent pellet formed in a reagent recess can be effectively mixed with a sample as the sample flows into the chamber. A flexible circuit with patterned metallic electrical components disposed on a heat stable material can be in direct contact with fluid in the chambers and has resistive heating elements aligned with, for example, a chamber for performing an amplification reaction.

Abstract: A torque-limiting fastener includes a head portion extending from a first end to a second end and including a first lumen extending longitudinally therethrough; a shaft portion extending from the second end of the head portion to a free end and including a second lumen in operative communication with the first lumen, the second lumen extending longitudinally through the shaft portion; and a plurality of perforations disposed at intervals around a periphery of at least one of the head portion and the shaft portion, the plurality of perforations being proximate a transition region in between the head portion and the shaft portion, wherein the transition region forms a frangible connection between the head portion and the shaft portion.

Abstract: The present invention provides a method for producing dried and stable reagent:substrate complexes suitable for use in various types of assays. Also provided are dried reagent:substrate complexes produced by the method of the invention, as well as methods for their use to perform an assay.

Abstract: A lateral flow assay device of the present disclosure has numerous features to ensure correct operation of the device under gravity, such as vent pockets for enabling the flow of sample fluid from one chamber to the next when the vent pocket is unsealed. The vent pockets have protrusions to help prevent accidental resealing. The device also can have a gasket to ensure free air movement between open vent pockets. Flow control features that protrude horizontally into a chamber proximal to an outlet act to deflect the flow to the side of the chamber opposite from the outlet, prior to the flow entering the outlet. Such features can reduce the flow velocity of the sample fluid and increase the effective fluid flow path length, enhance mixing of reagents with a sample, and enabling more accurate control of fluid flow in the device.

Abstract: An automated method for performing an assay of the present disclosure can be performed in a microfluidic device that is a lateral flow device having numerous features to ensure correct operation of the device under gravity, such as vent pockets for enabling the flow of sample fluid from one chamber to the next when the vent pocket is unsealed. Each chamber can have a reagent recess proximal to an inlet end of the chamber. A reagent pellet formed in a reagent recess can be effectively mixed with a sample as the sample flows into the chamber. A flexible circuit with patterned metallic electrical components disposed on a heat stable material can be in direct contact with fluid in the chambers and has resistive heating elements aligned with, for example, a chamber for performing an amplification reaction.

Abstract: A lateral flow assay device of the present disclosure has numerous features to ensure correct operation of the device under gravity, such as vent pockets for enabling the flow of sample fluid from one chamber to the next when the vent pocket is unsealed. The vent pockets have protrusions to help prevent accidental resealing. The device also can have a gasket to ensure free air movement between open vent pockets. Flow control features that protrude horizontally into a chamber proximal to an outlet act to deflect the flow to the side of the chamber opposite from the outlet, prior to the flow entering the outlet. Such features can reduce the flow velocity of the sample fluid and increase the effective fluid flow path length, enhance mixing of reagents with a sample, and enabling more accurate control of fluid flow in the device.

Abstract: The present invention provides a method for producing dried and stable reagent:substrate complexes suitable for use in various types of assays. Also provided are dried reagent:substrate complexes produced by the method of the invention, as well as methods for their use to perform an assay.

Abstract: A disposable cassette for detecting nucleic acids or performing other assays. The cassette can be inserted into a base station during use. The cassette has numerous features to ensure correct operation of the device under gravity, such as vent pockets for enabling the flow of sample fluid from one chamber to the next when the vent pocket is unsealed. The vent pockets have protrusions to help prevent accidental resealing. The cassette also can have a gasket to ensure free air movement between open vent pockets. A flexible circuit with patterned metallic electrical components disposed on a heat stable material can be in direct contact with fluid in the chambers and has resistive heating elements aligned with the vent pockets and the chambers.