摘要:
The invention relates to an apparatus for separating blood, more particularly an apparatus (1) for absorbing blood (19) and separating blood components, e.g. blood plasma, as a sample liquid (2). Said apparatus (1) comprises a feeding device (13) for absorbing the blood (2), a device (15) for separating blood components as a sample liquid (2), a duct which preferably absorbs the sample liquid (2) exclusively by means of capillary forces, and a device for filling the duct (3) with sample liquid (2) in an inlet or feeding zone (18) of the duct (3). The separating device (15), in particular a membrane, is curved, especially convexly shaped, and the apex of said curved, especially convex shape projects into the filling device.
摘要:
A device and a process for testing a sample liquid in which especially the ELISA process can be carried out very easily, rapidly and with high precision. To do this, a sample liquid and a dilution liquid are each supplied to several metering chambers of different volumes, so that the sample liquid can be diluted into assigned reaction chambers in one dilution step in different dilution ratios. Different liquids can be supplied in succession to the reaction chambers by means of a common receiving chamber. The liquids are transferred from the reaction chambers into the assigned test chambers to stop the detection reaction.
摘要:
The invention relates to a device and a method for collecting blood and separating blood plasma as a liquid sample, by means of a canal that absorbs the liquid sample by capillary forces. The aim of the invention is to obtain a uniform filling of the canal with the liquid sample and an effective separation. To achieve this, deaeration takes place in a transverse direction to the main filling direction or to the longitudinal direction of the canal, immediately downstream of a separation device in an inlet region of the canal.
摘要:
Analytical results obtained with microfluidic devices are improved by providing structural features in areas containing dry supported reagents, the structural features directing the flow of a sample over the area in a predetermined uniform manner and facilitating the purging of air.
摘要:
The device (10) for the stepwise transport of liquid, particularly of sample liquid to be analyzed, through several reaction chambers located in series in terms of flow while utilizing capillary forces comprises at least one channel (14) through which liquid is transportable on the basis of capillary forces. Further, the device (10) comprises at least two closed vent holes (38,40,42) which are in fluid communication with the channel (14) at connection sites (22,24,26) spaced from each other along the channel (14). The connection sites (22,24,26) divide the channel (14) into several channel sections (44,46,48). The fluid connections between a respective channel section (44,46,48) and the vent holes (38,40,42) allocated thereto can be opened separately.
摘要:
A device and a process for testing a sample liquid in which especially the ELISA process can be carried out very easily, rapidly and with high precision. To do this, a sample liquid and a dilution liquid are each supplied to several metering chambers of different volumes, so that the sample liquid can be diluted into assigned reaction chambers in one dilution step in different dilution ratios. Different liquids can be supplied in succession to the reaction chambers by means of a common receiving chamber. The liquids are transferred from the reaction chambers into the assigned test chambers to stop the detection reaction.
摘要:
The present invention relates to devices for efficient transport, transfer and movement of fluids. In particular, the invention provides fluidic micro-structures for controlled transport and movement of liquids in devices for analytical and other purposes. Devices of the invention include one or more features that can enhance performance of the fluid transfer, referred to as a pre-shooter stop, a butterfly structure, a cascade structure, a waste chamber inlet, a capillary driven sample inlet chamber, a capillary stop structure, a bifurcation flow-through structure, and a hydrophobic vent.
摘要:
The invention relates to an apparatus for separating blood, more particularly an apparatus (1) for absorbing blood (19) and separating blood components, e.g. blood plasma, as a sample liquid (2). Said apparatus (1) comprises a feeding device (13) for absorbing the blood (2), a device (15) for separating blood components as a sample liquid (2), a duct which preferably absorbs the sample liquid (2) exclusively by means of capillary forces, and a device for filling the duct (3) with sample liquid (2) in an inlet or feeding zone (18) of the duct (3). The separating device (15), in particular a membrane, is curved, especially convexly shaped, and the apex of said curved, especially convex shape projects into the filling device.
摘要:
Device for manipulation of limited quantities of liquids with the following features: the device has at least one solid; the solid has surface areas in which different capillary forces act; one or more first surface areas have a microstructured and/or nanostructured surface; the microstructured and/or nanostructured surfaces have regularly arranged structure elements (A to E); the solid and the structure elements consist of one material and are connected to one another in one piece; one or more first surface areas are provided with reagents; the second surface area encompasses at least one of the first surface areas.
摘要:
A discharge device, an evaporator and a method for evaporating a liquid to the atmosphere in which the liquid is supplied to an evaporation surface only by a capillary.