Abstract:
A slide-loader system for preparing a microarray slide having a hybridized reaction area for washing, and which includes an immersion tray which contains a volume of wash buffer fluid, and a stripping jig that holds the microarray slide during removal of a reaction chamber housing that is mounted about the hybridized reaction area.
Abstract:
A method and system for performing mixing in a low volume, low aspect ratio microfluidic chamber (3) is described. Two or more mixing bladders (13,15) formed adjacent the microfluidic chamber are inflated and deflated in reciprocating fashion to cause inward and outward deflection of discrete regions of the chamber wall to mix fluid within the chamber. Mixing bladders are actuated by air or another gas, or by a liquid such as water, pumped in and out of the bladders with a pump which may be located remote from the microfluidic device including the microfluidic chamber. In an alternative embodiment, mixing is generated by applying alternating mechanical forces to a surface of a flexible chamber forming device. The microfluidic chamber may be a hybridization chamber formed on a microarray (25) slide with the use of a microarray interface device, or it may be a microfluidic chamber formed in various other types of microfluidic devices.
Abstract:
A three-dimensional microfluidic device (100) formed from a plurality of substantially planar layers (101, 102, 103) sealed together is disclosed.
Abstract:
A slide-loader system for preparing a microarray slide having a hybridized reaction area for washing, and which includes an immersion tray which contains a volume of wash buffer fluid, and a stripping jig that holds the microarray slide during removal of a reaction chamber housing that is mounted about the hybridized reaction area.
Abstract:
Methods and apparatus are presented for controlling fluid flow with pressure gradient fluid control. Passive fluid flow barriers may be used to act as valves, thereby allowing the flow of fluids through flow paths to be regulated so as to allow fluids to be introduced via a single channel (50) and subsequently split into multiple channels (58, 60). Flow through flow paths can be regulated to allow a series of sister wells (51-53) or chambers to all fill prior to the fluid flowing beyond any one of the sister wells (51-53) or chambers. Each flow path may have multiple segments (66-69), at least one of which is designed to balance the pressure drops of the flow paths to provide uniform flow of fluids through the flow paths. The configurations of the wells (51-53) may be modified by adding vents or flow dividers to enhance fluid flushing and gas removal capability.
Abstract:
A device for forming a low volume reaction chamber (13) on a substrate such as a microarray slide (3) and its method of use is disclosed. The reaction chamber forming device has an adhesive laminate design that permits it to be manufactured as a disposable device. A preferred embodiment of the device includes pneumatically actuatable mixing bladders (23), which can be inflated or deflated to produce deflection of a wall of the reaction chamber in and out with respect to the reaction.
Abstract:
A microplate lid (12) containing fluid processing and transport structures is disclosed that provides controlled delivery of small volumes of samples and reagents to a microplate (10), and prevents evaporation during processing.
Abstract:
A method and system for providing a fluidic interface to slides bearing microarrays of biomolecules or other samples immobilized thereon to perform a variety of chemical reactions or processing steps on the slide. An interface device seals against the slide to form a chamber or chambers containing all or a portion of the microarray, providing selective access to portions of the slide. The interface device includes inlet and outlet ports permitting liquid sample and reagents to be introduced to and removed from the chamber accessing the slide surface. Pre- and post- array microfluidic circuitry may be included in the interface device or in attachable modules. The system may include one or more compartments for collecting and storing waste fluids.