摘要:
The present invention discloses methods, kits-of-parts, and devices for the selective lysis of eukaryotic cells in a sample comprising micro-organisms such as bacteria unicellular fungi. The selective lysis is obtained by incubating the sample in an ionic surfactant under alkaline conditions.
摘要:
The present invention relates to a method for producing microcarriers (1), the method comprising the steps of providing a wafer having a bottom layer (16), a top layer and an insulating layer (18), structuring the top layer to define at least one three-dimensional structure (7a) on the top surface of the top layer, etching away the top layer to delineate lateral walls (22) of bodies (6) of the microcarriers, applying a continuous polymer layer over the top surface (4) of the bodies (6) of the microcarriers, removing the bottom layer (16) and the insulating layer (18), structuring the bottom surfaces of the bodies (6) of the microcarriers to define at least one three-dimensional structure on the bottom surface of each body, and removing the polymer layer to release the microcarriers.
摘要:
The present invention relates to a method for performing a chemical and/or a biological assay comprising the following successive steps of: a) providing an assay device (19) with a microchannel (20) having an inlet (28) and an outlet (30) and further comprising restricting means (34) designed to restrict the movement toward the outlet (30) of microparticles (10) introduced in the microchannel while(20) letting a fluid to flow through the restricting means (34), b) introducing microparticles (10) in the microchannel (20) via the inlet (28), c) restricting the movement of said microparticles (10) in the microchannel (20) toward the outlet using restricting means (34), d) flowing a fluid sample through the microchannel (20), e) performing a biological and/or chemical read-out on each microparticle (10), the method further comprising the steps of: f) moving the microparticles (101, 102, 103, 104) in the microchannel, and g) repeating successively the steps d) and e).
摘要:
The invention relates to a micro valve for use in a biosensor, a micro fluidic device, use of such a device, and a micro fluidic element. Biosensors are used for detection of molecules and/or ions, such as protein, drug, DNA, RNA, hormone, glucose, insulin, enzyme, fungus, bacterium, etc., in a biological sample. The sensor can be used for diagnostic application, but for instance also drugs, either therapeutic or abuse, may be detected in for instance blood, urine and saliva.
摘要:
The present invention relates to a sealing device for closing an introduction aperture (1), the sealing device comprising a fixed support (2) and a shutter (3) mounted movably in translation relative to the support between an extended position and a final retracted position, wherein the sealing device is in a final retracted configuration and wherein the shutter closes introduction aperture. The device includes locking means for preventing any movement of the shutter when it is in the final retracted position. The sealing device further comprises an intermediate retracted configuration, wherein the shutter is at least partly retracted. The sealing device also comprises motion guiding means (5,7) for guiding the movement of the shutter and designated so that the extension of the shutter is required to move the shutter from the intermediate retracted position to the final retracted position.
摘要:
The invention relates to high intensity focused ultrasound devices. Furthermore the invention relates to an apparatus for irradiating a liquid sample with acoustic energy to generate cavitation in the liquid sample. The apparatus (100) comprises a source and is adapted to receive a cartridge (105) in such a way, that the apparatus focuses the HIFU waves emitted from the source onto a liquid air interface that is present within the cartridge. This focusing is performed when the cartridge is inserted into a receiving section of the apparatus.
摘要:
The present invention relates to carriers, which are coated by at least one layer of polyelectrolytes and one layer of magnetic material. These carriers can be manipulated in a magnetic field. The application of the coating of the present invention on microcarriers comprising a fluorescent core results in a carrier with a homogeneous luminescence. Additionally, where the core is provided with a code, this allows improved reading thereof.
摘要:
The invention relates to a design of an interface plate (101) between a microfluidic cartridge (100) and an instrument (102) for fluid actuation in the disposable cartridge. Pneumatic actuation is carried out through a reversible pneumatic interconnection between instrument and cartridge. Pneumatic drivers are integrated in the instrument for a low cost and reliable solution. The actuation of the fluid in the cartridge is achieved by a flexible membrane (105) attached to the major surface of the disposable cartridge forming closed compartments only when attached to the instrument. The pressure, in these compartments determines the deflection of the membrane which in turn actuates the fluid. This approach takes advantage of the high power and large stroke of pneumatic actuation while at the same time keeping the disposable cartridge simple and low cost and allowing easy introduction of other physical transport across the interface plate, like heat or acoustic vibration. A large number of actuators can be integrated easily into the flat interface plate as no individual fixation, like tubing, is required for the pneumatic actuation.
摘要:
The invention relates to a manifold system comprising a manifold housing and a manifold core. Means of using an oblique surface inside of the manifold housing onto which a manifold core is to be inserted and by adapting a fluidic channel in the manifold housing the corresponding way, such a manifold housing is producible by manifold casting without having an undercut. Thus, the use of sliders during production of such a manifold housing is avoided. Any need for applying external forces (e.g. by an instrument) for obtaining a seal between the manifold housing and the manifold core is obviated.
摘要:
The invention relates to a micro valve for use in a biosensor, a micro fluidic device, use of such a device, and a micro fluidic element. Biosensors are used for detection of molecules and/or ions, such as protein, drug, DNA, RNA, hormone, glucose, insulin, enzyme, fungus, bacterium, etc., in a biological sample. The sensor can be used for diagnostic application, but for instance also drugs, either therapeutic or abuse, may be detected in for instance blood, urine and saliva.