摘要:
The invention relates to a microfluidics module (100) for both the immunological and molecular diagnosis of samples, wherein channels (1, 3, 3', 3'', 4, 7, 7', 7'', 8, 8') and/or cavities (2, 5) having inlets (1a, 1b, 3a-3i) for fluid samples and reagents, as well as inlet-assigned containers, container receiving means or container anchoring points are formed in a main body, and which module has a detection channel (80), for receiving a test-specific detection medium, that can be connected with channels (8, 7, 3) of the module. A central multi-port valve (6) is essential for the function, and controllably connects individual channels (3, 4, 7, 7', 7'', 8) on the module. The channels belong to channel structures which are assigned certain functions and which are all directly or indirectly connected to the multi-port valve (6), wherein at least sections of the channel structures and channels form circuits (10, 30, 40, 70), the channels (1, 3, 3', 3'', 4, 7, 7', 7'', 8, 8') and/or cavities (2, 5) of which circuits are at least partially arranged close to the base surface (120), in order to permit procedures, controlled by the analysis device, within the test process. The invention also relates to a cartridge (200) for receiving a microfluidics module (100), a reagent module (300), and a method for carrying out both immunological and, optionally, molecular tests using the microfluidics module (100).
摘要:
An integrated microfluidic device for carrying out a series of fluidic operations includes a housing (18) including a plurality of n microfluidic conduits, wherein n is at least three (20, 22, 24), and a rotating valve (10) having an internal channel (12) with an entrance port and an exit port that are angularly separated. The rotating valve is positionable in a first position to connect two of the n fluidic conduits (20, 22) via the internal channel, and upon rotating the valve to a second position, two other of the n fluidic conduits (22, 24) are connected by the internal channel. The device further may include one or more fluidic chambers (44, 46) in fluid communication with respective fluidic conduits. Fluid contained in one fluidic chamber is transferrable by application of positive or negative gas pressure through associated fluidic conduits into another fluidic chamber via the internal channel. The device may be utilized to perform a variety of fluidic operations.
摘要:
A hybrid valve apparatus for use with an aspiration actuator and a dispensing actuator to transfer fluid from a reservoir to a test site on a substrate surface. The hybrid valve includes a valve assembly movable between an aspiration condition and a dispensing condition, and a manifold device coupled to the valve assembly. The manifold device includes a fluid aspiration conduit having a first aspiration port in fluid communication with the aspiration actuator. On an opposite end of the aspiration conduit is a second aspiration port in selective fluid communication with the valve assembly to selectively aspirate a liquid sample slug from the reservoir into a discrete sample path when the valve assembly is in the aspiration condition. The manifold device further includes a fluid dispensing conduit having a first dispensing port in fluid comanunication with the dispensing actuator, and a second dispensing port in selective fluid communication with the valve assembly. When the valve assembly is in the dispensing condition, the sample path is fluidly coupled to the dispensing actuator to selectively dispense at least one droplet of the liquid sample slug therefrom, while simultaneously being out of fluid communication with the aspiration actuator. In contrast, in the aspiration condition, the sample path is in fluid communication with the aspiration actuator, while being out of fluid oommunication with the dispensing actuator.
摘要:
The invention relates to a microfluidic structure for positioning a fluid volume having a plurality of fluid lines (10, 12, 14), of which the fluid volume is to be positioned in a first fluid line (10), and a valve (20). The first fluid line (10) has a first and a second end (16, 18), at which ends the first fluid line (10) is connected to said valve (20). The invention further relates to a method for positioning a fluid volume in a microfluidic system having a plurality of fluid lines (110, 132) and having a valve (122), wherein the first fluid line (110) comprises a first and a second end (118, 120), at which ends the first fluid line (110) is connected to said valve (122). The method comprises the following steps: connecting a second fluid line via a second passage in the valve to the first fluid line (110), filling the first fluid line (110) with a fluid volume, short-circuiting the first fluid line (110) by connecting the first and the second end (118, 120) via a first passage in the valve (122) or blocking the first fluid line (110) by closing the first and the second end (118, 120) by means of the valve (122).
摘要:
A manifold device for use with a valve assembly, an aspiration source and a dispensing source is described. The manifold body defines a plurality of fluid aspiration conduits each having an aspiration port in communication with an aspiration source, and a second aspiration port in selective fluid communication with a corresponding communication channel of the valve assembly to aspirate a respective liquid sample slug from a corresponding reservoir of sample fluid into discrete sample paths when the valve assembly is in the aspiration condition. The manifold body further defines a plurality of fluid dispensing conduits each having a first dispensing port in communication with the dispensing source, and a second dispensing port in selective fluid communication with a corresponding communication channel of the valve assembly to selectively dispense at least one droplet of the corresponding liquid sample slug from the corresponding sample path when the valve assembly is in the dispensing condition. In the aspiration condition, the sample paths are out of fluid communication with the dispensing source and in the dispensing condition the sample paths are out of fluid communication with the aspiration source.
摘要:
A metering assembly (10) includes a fluidic chip (300) and metering chambers (510). Selectable outlet valves (610, 620, 630) communicate with each metering chamber to provide a discrete dispensed volume. The valves may be commonly controlled and may be formed as multi-level valves. The valves may be grouped into common substrate valve clusters (600). Purge channels (540) communicate with the metering chambers and controlled purge valves (660) allow reverse flow wash fluid to wash the metering chamber. Pressure ports (330) are employed to actuate the valves. A method of dispensing a fluid from the fluidic chip includes a) selectively filling (or filling) the metering chambers with a selected fluid; and b) outputting (or selectively outputting) the fluid to output locations. The total output volume of fluid dispensed from each metering chamber may be accumulated. The process may be repeated until the accumulated volume equals the desired volume and may be repeated for another fluid from a plurality of different fluids. A microfluidic control apparatus (700, 900) can be used to control fluid flow. The apparatus includes a flexible membrane (704, 904) and a base (702, 902). A substrate having fluid ports (354a, 354b, 954) cooperates with the membrane. The apparatus can have a lip (702, 902) surrounding the membrane. The membrane can be disposed between relatively rigid layers (310, 350).