摘要:
A fluid sample collector includes: a receptacle; an actuator; and a lancet. A method of collecting a fluid sample includes: activating a finger retention element; extending an actuator associated with a lancet; activating a collection pump; deactivating the collection pump; and releasing the finger retention element. An optical fluid measurement element includes: an emitter; an absorber; and a fluid pathway, where an optical output of the emitter passes through the fluid pathway and is received as an optical input to the absorber. A lancet assembly includes: a spring; a lancet; a needle cup; and a housing including a channel that accepts an actuator interface. A method of evaluating a fluid sample includes: filling a cavity; adding a buffer solution; separating the sample into first and second portions; mixing the second portion with tagged antibodies; removing leftover tagged antibodies; and measuring a difference between the first portion and the second portion.
摘要:
Die Erfindung betritt ein Stoffgemisch (10) und seine Verwendung für eine Polymerase- Kettenreaktion, insbesondere für eine Polymerase- Kettenreaktion in einer mikrofluidischen Vorrichtung (100), wobei das Stoffgemisch (10) mindestens 2,5 Millimolar Magnesiumchlorid umfasst. Ferner betrifft die Erfindung ein Gemisch, insbesondere ein zweites Stoffgemisch, umfassend ein erfindungsgemäßes Stoffgemisch (10) für eine Polymerase, wobei das Gemisch zusätzlich zu einer Konzentration von mindestens 2,5 Millimolar Magnesiumchlorid für jedes in dem Gemisch enthaltene Millimolar an EDTA mindestens 1 Millimolar, bevorzugt mindestens 1,5 Millimolar, ganz bevorzugt mindestens 2,0 Millimolar Magnesiumchlorid umfasst.
摘要:
Die Erfindung betrifft ein Verfahren (500) zur Prozessierung von Viren und Bakterien einer Probe mit einer mikrofluidischen Vorrichtung (100). In einem ersten Schritt (501) wird die Probe über ein Rückhalteelement (150) der Vorrichtung (100) gespült, wobei das Rückhalteelement (150) ausgebildet ist, Viren und Bakterien aus der Probe zu fixieren. In einem zweiten Schritt (502) erfolgt ein Spülen (502) eines ersten Fluids über das Rückhalteelement (150) zur Ablösung von durch das Rückhalteelement (150) fixierten Viren und Überführung des mit Viren angereicherten ersten Fluids in eine erste Kammer (110) für eine weitere Prozessierung (504) der Viren. In einem dritten Schritt (503) erfolgt ein Spülen (503) eines zweiten Fluids über das Rückhalteelement (150) zur Ablösung von durch das Rückhalteelement (150) fixierten Bakterien und Überführung des mit Bakterien angereicherten zweiten Fluids in eine zweite Kammer (120) für eine weitere Prozessierung (504) der Bakterien.
摘要:
A method of testing a sample for the presence of nitrate or nitrite, the method comprising the steps of: forming a mixture by contacting the sample with a composition comprising hydrogen peroxide or a hydrogen peroxide precursor and a fluorescent indicator precursor capable of forming a fluorescent indicator in the presence of peroxynitrite; irradiating the mixture; and measuring fluorescence from the fluorescent indicator. The method may be carried out using a device in which the mixture in a channel or chamber 101 of a microfluidic device is irradiated by light from light source 103 and emission from the fluorescent indicator is detected by photodetector 105.
摘要:
The present invention relates to a sensor for detecting an analyte in a fluid. The sensor (200) comprising: a fluidic channel (102) arranged to receive a flow of the fluid, a plasmonic sensor (202) which upon resonant excitation exhibits a localized surface plasmon resonance condition thereby forming a sensing volume (206) within the fluidic channel (102), wherein the plasmonic sensor (202) is partly arranged within the fluidic channel (102), a binding portion (208) arranged inside the sensing volume (206) for binding the analyte. A system for detecting an analyte in a fluid, the system comprising the sensor, and a method for detecting an analyte in a fluid are also presented.
摘要:
L'invention concerne une membrane d'analyse de/pour dispositif microfluidique, façonnée d'un seul tenant à partir d'un matériau, absorbant diffuseur de liquide, de composition à base de fibre de verre, au travers de laquelle un échantillon biologique une fois déposé sur ladite membrane d'analyse, progresse par capillarité et est soumis à au moins une analyse qualitative et/ou quantitative, ladite membrane d'analyse comprend : - au moins une zone dite zone de dépôt, - au moins une zone dite zone de réaction, dans laquelle au moins un réactif se trouve adsorbé directement audit matériau diffuseur de liquide en fibre de verre, ou indirectement grâce à un agent de couplage, - des canaux assurant une communication fluidique entre ces zone(s) de dépôt et zone(s) de réaction, et est caractérisé en ce qu'au moins une zone de réaction est circonscrite dans un espace de la membrane d'analyse, dit espace à diffusion ralentie, à l'intérieur duquel, les canaux qui arrivent en amont et/ou les canaux qui repartent en aval : - se prolongent en un ou en plusieurs canaux de moindre largeur, et/ou - se prolongent en un ou en plusieurs canaux de moindre épaisseur, et/ou - se prolongent en un ou en plusieurs canaux comprenant au moins une portion ayant un tracé tortueux.
摘要:
This invention relates to a liquid sample collection apparatus comprising, a port for receiving a liquid sample, a collector for storing said liquid sample, at least one conduit connecting said port to said collector, and a sample detection apparatus comprising a sensor for detecting said liquid in said collector and generating an output depending on the quantity of said liquid detected in said collector, and a controller responsive to said sensor output and configured to determine that said sample has been collected when said sensor output indicates that a quantity of said liquid above a threshold amount is detected in said collector.
摘要:
At least one electrode is integrated on a lab on a chip cartridge in a sample preparation chamber of the cartridge, a DNA hybridization chamber of the cartridge, a protein assay chamber of the cartridge, and/or a detection chamber of the cartridge, for example, where the electrode is used to generate pH electrochemically in order to activate, deactivate, or intermediately attenuate an enzyme's activity on demand, in order to increase the fidelity of analyte detection, for cell lysis, for protein extraction, for DNA dehybridization, for primer hybridization control, for sample pre concentration, and/or for washing to remove non target species.
摘要:
A substance determination system comprises a chip comprising: a substrate; a microfluidic channel disposed on the substrate; a reagent enclosed in the microfluidic channel; and a substance inlet to the microfluidic channel; a centrifugal device configured to rotate the chip; and a microprocessor device configured to assess the reagent in the microfluidic channel. A method for identifying a substance comprises: inserting a substance into an inlet in a microfluid detection device having a reagent disposed in a microfluid circuit connected to a mixing domain; spinning the microfluid detection device to move the substance and the reagent to the mixing domain; capturing a digital image of a reaction between the substance and the reagent; analyzing the digital image of the reaction to determine a color parameter; comparing the color parameter to a reference parameter of a reference composition; and assessing the comparison to determine if the substance is the reference composition.