摘要:
Disclosed herein are devices for detecting the presence of a target analyte in a fluid sample. The biosensor device can comprise at least a reaction chamber and a detection chamber. The device can comprise a amplifying mechanism such that one target analyte molecule present in the fluid sample can lead to generation/activation of multiple detection agent molecules, and therefore, an amplified signal. Also disclosed are the methods of manufacturing and using such a biosensor device.
摘要:
Disclosed herein are devices for detecting the presence of a target analyte in a fluid sample. The biosensor device can comprise at least a reaction chamber and a detection chamber. The device can comprise a amplifying mechanism such that one target analyte molecule present in the fluid sample can lead to generation/activation of multiple detection agent molecules, and therefore, an amplified signal. Also disclosed are the methods of manufacturing and using such a biosensor device.
摘要:
Disclosed herein are methods and devices for detecting the presence of an analyte of interest. A biosensor device can include a reaction chamber and an electrochemical detection chamber. The reaction chamber can include at least one immobilized binding site and a probe conjugate adapted to bind to at least one of the target analyte and the immobilized binding site, while the detection chamber can include electrodes for detecting an electrochemical reaction. If present, the target analyte in the fluid sample results in a change in the amount of probe conjugate bound in the reaction chamber, which can be detected electrochemically in the detection chamber.
摘要:
The present invention relates to electrochemical cells including a first working electrode 32, a first counter electrode 34, a second working electrode 36, and a second counter electrode 38, wherein the electrodes are spaced such that reaction products from the first counter electrode 34 arrive at the first working electrode 32, and reaction products from the first and second counter electrodes 34, 38 do not reach the second working electrode 36. Also provided is a method of using such electrochemical cells for determining the concentration of a reduced or oxidized form of a redox species with greater accuracy than can be obtained using an electrochemical cell having a single working and counter electrode.
摘要:
The invention disclosed in this application is a method and device for combining the sampling and analyzing of sub-dermal fluid samples, e.g., interstitial fluid or whole blood, in a device suitable for hospital bedside and home use. It is applicable to any analyte that exists in a usefully representative concentration in the fluid, and is especially suited to the monitoring of glucose.
摘要:
The present invention provides a metal electrode stabilised by a coating, the coating comprising a sulfur containing moiety in its molecular structure. The coating may also include a hydrophilic group and a spacer between the sulfur containing moiety and the hydrophilic group. Preferably, the sulfur containing moiety is selected from the group comprising thiol, disulfide and SOx, and the hydrophilic group is selected from the group comprising hydroxyl, amine, carboxyl, carbonyl, oligo (ethylene oxide) chain, and zwitterionic species. Compounds useful in the present invention include 2-mercaptoethanol, 2-mercaptoethylamine, 3-mercaptopropionic acid, thiophene, 4-carboxythiophene, cysteine, homocysteine, and cystine.
摘要:
The present invention relates to a device and method for measuring hemoglobin in a fluid sample. The device comprises a disposable electrochemical cell, such as a thin layer electrochemical cell, containing a reagent capable of being reduced by hemoglobin. A suitable fluid sample that may be analyzed according the present invention is whole blood. If the hemoglobin to be analyzed is present in red blood cells, a lysing agent may be added to the sample to release the hemoglobin prior to analysis.
摘要:
The present invention relates to the measurement of the progress of a chemical reaction that generates an electroactive reaction product that is subsequently detected at an electrode amperometrically or coulometrically. The method is useful in applications where it is desirable to follow the progress of a chemical reaction, particularly in sensor applications where the progress of the reaction of an analyte can be useful in determining the analyte concentration.
摘要:
Electrochemical sensors for investigating a physiological sample and methods of manufacture are disclosed. The sensor includes a longitudinally extending reaction cell, having electrodes and a reagent, and laterally spaced electrical contact points for electrically communication with a meter. An array of such sensors is further disclosed including connective flaps for joining adjacent sensors. In use, the array of sensors can be stored in a folded configuration and dispensed individually.
摘要:
Electrochemical sensors for investigating a physiological sample and methods of manufacture are disclosed. The sensor includes an electrochemical reaction cell, having electrodes and a reagent, and laterally spaced electrical contact points for electrically communication with a meter. Further described herein is a multi-chambered sensor having an electrochemical reaction cell and an immunological cell. The multi-chambered cell can also include a pre-chamber.