摘要:
A microdevice for isolating and amplifying aptamers includes a selection microchamber and an amplification microchamber. The selection microchamber can include a plurality of cultured cells immobilized therein. A first microchannel connecting the selection microchamber to the amplification microchamber can be configured to hydrodynamically transfer oligomers from the selection microchamber to the amplification chamber. A second microchannel connecting the selection microchamber to the amplification microchamber can be configured to hydrodynamically transfer oligomers from the amplification chamber to the selection chamber.
摘要:
Devices to detect detecting endotoxin (lipopolysaccharide or LPS) and/or 1-3-β-D-glucan (beta glucan or BG) using substrates including electrogenic mediators for amperometric detection are provided herein. Substrates include an amine group as well as one or more substituted organic rings, such as a phenol. Devices include cartridges for detecting LPS or BG simultaneously using dual detection techniques.
摘要:
In one aspect, the present disclosure provides an integrated microfluidic device for nucleic acid amplification and microarray detection. In one aspect, the device comprises: (1) a microchip configured to process reagents, comprising a plurality of reservoirs, channels, valves, and/or fluid interfaces; (2) an amplification chamber for PCR, carried out in a detachable tube assembled on the microchip through a joint; and (3) a microarray chamber comprising a microarray and a reaction chamber. In some embodiments, these features are interconnected to allow transportation of reagents for nucleic acid amplification and hybridization detection functions in a closed system. In one aspect, the integrate device herein overcomes the problem of contamination during the amplification and hybridization reactions.
摘要:
A microdevice for isolating and amplifying aptamers includes a selection microchamber and an amplification microchamber. The selection microchamber can include a plurality of cultured cells immobilized therein. A first microchannel connecting the selection microchamber to the amplification microchamber can be configured to hydrodynamically transfer oligomers from the selection microchamber to the amplification chamber. A second microchannel connecting the selection microchamber to the amplification microchamber can be configured to hydrodynamically transfer oligomers from the amplification chamber to the selection chamber.
摘要:
A lab-on-chip device for the processing, in particular the separation, of a fluid mixture comprising two immiscible phases (liquid and/or solid), said device comprising a fluid line (1,2,5,6) which successively includes an inlet reservoir (1), a separation channel (2), a collection channel (5) and an outlet (6), said separation channel (2) being designed in a way as to allow a separation of the fluid mixture into said two phases.
摘要:
A multi-index detection microfluidic chip is provided. A bottom plate (1) and a cover plate (2) that matches the bottom plate (1) and seals it are provided in the microfluidic chip. The center of the microfluidic chip has a through-hole (3). The bottom plate (1) has one or more wave-shaped main channel (s ) (4), one end of each of the main channel (4) connected to a sample injection hole (9) on the bottom plate (1), and the other end connected to an exhaust hole (10) on the bottom plate (1). The valley on the main channel (1) is distal to the through-hole (3), and the peak is proximal to the through-hole (3). Each valley of the main channel (1) is connected to a reaction chamber (6) by a linking channel (5). The linking channel (5) comprises one or more buffering chambers (7). The microfluidic chip can be used in detection by fluorescence, turbidity, color, detection equipment, and/or direct observation by the naked eyes. The detection is real-time as the reaction occurs or after the reaction.
摘要:
A device (1) for preparing a substrate (S) for processing samples comprises at least a cover (3) having a contact surface (3a) configured to come into contact with a substrate (S) and sealing means (4) located on the contact surface (3a) for latching onto the substrate (S), the cover (3) has a peripheral rim (3b) and an aperture (5) for handling fluids; a frame (6) having an engagement surface (6a) to be coupled with the substrate (S) and at least a window (7) into the engagement surface (6a), said window (7) having an edge (7a) to engage the rim (3b) for holding said cover (3) in a predetermined position with respect to the frame (6).
摘要:
Devices and methods for performing a point of care blood, cell, and/or pathogen count or a similar blood test. Disclosed herein are systems that can be used to provide rapid, accurate, affordable laboratory-quality testing at the point of care. The systems described herein are capable of imaging and counting individual cells in a prepared cell sample (e.g., a peripheral blood smear or a blood sample prepared in a microfluidic device) or another prepared cell- containing sample without the need for a microscope or other expensive and cumbersome optics. The systems described herein are designed to eliminate or replace expensive, centralized clinical testing equipment and technical personnel. Such systems may include automated data reporting and decision support.