摘要:
The present invention relates to an electrode system for measuring the concentration of an analyte under in-vivo conditions, comprising an electrode with immobilized enzyme molecules and an improved diffusion barrier that controls diffusion of the analyte from body fluid surrounding the electrode system to the enzyme molecules.
摘要:
The present invention relates to a modified cellobiose dehydrogenase (CDH) or its functional flavodehydrogenase domain having glucose oxidation activity and a reduced maltose oxidation activity as compared to the unmodified CDH or its functional flavodehydrogenase domain, nucleic acids encoding said enzyme or domain, electrodes with said enzyme or domain and methods of producing and using the same.
摘要:
A novel blood glucose level measuring apparatus and a novel measurement data management apparatus are provided which can carry out measurement of the blood glucose level of a plurality of patients rapidly and with certainty and can rapidly deal also with an emergency situation. The blood glucose level measuring apparatus includes patient identification means, blood glucose level measuring means, time counting means, display means, control means having a normal measurement mode in which patient identification information and a patient data table are cross-checked with each other and then, if the patient identification information is not found, measurement of the blood glucose level is inhibited and an emergency measurement mode in which carrying out of measurement of the blood glucose level is permitted without acquiring the patient identification information by the identification means.
摘要:
Disclosed is a modified glucose dehydrogenases that has dramatically increased productivity in Escherichia coli and dramatically increased thermal stability, which is obtained by introducing specific amino acid mutations to glucose dehydrogenase derived from Botryotinia fuckeliana. Also disclosed is a modified glucose dehydrogenases that has dramatically increased productivity in E. coli and dramatically increased thermal stability, which is obtained by replacing two amino acid residues in glucose dehydrogenase of fungal origin with cysteine residues. The novel glucose dehydrogenase has a low reactivity to xylose.
摘要:
A method of measuring a quantity of a substrate contained in sample liquid is provided. This method can reduce measurement errors caused by a biosensor. The biosensor includes at least a pair of electrodes on an insulating board and is inserted into a measuring device which includes a supporting section for supporting detachably the biosensor, plural connecting terminals to be coupled to the respective electrodes, and a driving power supply which applies a voltage to the respective electrodes via the connecting terminals. One of the electrode of the biosensor is connected to the first and second connecting terminals of the measuring device only when the biosensor is inserted into the measuring device in a given direction, and has a structure such that the electrode becomes conductive between the first and second connection terminals due to a voltage application by the driving power supply.
摘要:
Systems and methods of use for continuous analyte measurement of a host's vascular system are provided. In some embodiments, a continuous glucose measurement system includes a vascular access device, a sensor, and sensor electronics, the system being configured for insertion into communication with a host's circulatory system. The vascular access device can comprise a plurality of analyte sensors (240), a catheter (212) having a lumen (212a) and a small orifice (212b), and a connector or hub (218) including a duct (218b) and an orifice (218c) which is configured for connection with other intravenous equipment via one or more flanges (218a).
摘要:
A method and device are provided for measuring a level of a clinically relevant analyte (such as glucose) in a fluid (such as blood). The device includes a flow path for conducting said fluid through the device; a detection chamber arranged on said flow path; and detector means arranged to detect analyte levels in the fluid in said chamber, wherein: said detection chamber contains a predetermined amount of an analyte such that that analyte mixes with fluid in the detection chamber to form, at the detector means, a calibration sample of the fluid at a time after the arrival of the fluid in said detection chamber, and said detector means is arranged to detect a first analyte level of an unadulterated sample of the fluid at a first time which is before the formation of said calibration sample and to detect a second analyte level of said calibration sample at a second time which is after the formation of said calibration sample.