摘要:
Analytical system for monitoring patient blood concentration of a substance to be analyzed, comprising analysis-elements (12) containing reagents and an evaluation instrument comprising a measurement device to measure a change resulting from a reaction of the analyte with the reagents in order to determine, from the measurement values so obtained, analytical data representing element analysis data C.sub.A.In order to allow continuous monitoring of the analyte with good accuracy and a reduced number of invasive sample generation steps it is proposed that the analytical system further comprises (i) a sensor unit (2) portable on the patient body, said sensor unit (2) including a sensor (7) borne on the patient body for the direct and reagent-free measurement of a parameter correlating with the concentration of the analyzed substance and a transmitter for the wireless transmission of data signals; and (ii) a sensor-analysis means to ascertain sensor-analysis data C.sub.S from the measurement values of said parameter measured by said sensor; and the evaluation instrument further comprises a receiver to receive in wireless manner the data signals from the sensor unit (2), calibration means to calibrate the sensor-analysis data C.sub.S on the basis of the element-analysis data C.sub.A and (iii) a data memory for the long-term storage of analytical data, whereby said evaluation instrument forms a central unit (3) of an integrated analysis-element/sensor monitoring system (1).
摘要:
Quantitative transmission spectroscopy where a sample liquid is applied onto a sample carrier having a net in such a manner that the liquid spreads across the meshes of the net. The liquid on the net is exposed to radiation essentially perpendicularly to the net, and the transmitted radiation is detected. The net accomplishes a dosing of the liquid in such a manner that identical meshes include identical quantities of liquid. For a given net, it is possible to derive the amount of liquid, which is located in a mesh and accessible to radiation, from a net constant. Knowing the amount of liquid detected by the radiation, it is possible to use the radiation absorption to calculate the concentration of one or several analytes contained in the sample liquid.
摘要:
In a process for producing a microneedle (12) that can be inserted into body tissue in which a needle tip (20) and a preferably capillary collecting channel (14) having a distal inlet for body fluid formed at the needle tip (20) are formed, it is provided that at least part of a preform (38) prefabricated from a flat material is shaped into a tubular structure (22) so that the collecting channel (14) is at least substantially annularly closed in the cross-section in the area of the tubular structure (22).
摘要:
An analytical test element is provided having a surface comprising a chemical detection layer on which a spreading net is disposed, the spreading net being configured to provide for the planar distribution of a liquid sample on the detection layer. The spreading net generally comprises a filament structure coated with a metallic layer that is oxidized at least on one or more surface portions thereof facing the detection layer.
摘要:
The invention concerns a device for collecting body fluids which has at least one lancet comprising a lancet body with at least two tips of different lengths. The device is characterized in that it has a selection means with the aid of which only one tip is selected before the lancing. This selection means can have different functions and shapes. The selection means is used to select a tip from a plurality of lancet tips which have different lengths and make only this tip available for use in the lancing process. Since the various tips are attached to a lancet body, it is, for example, possible to use a bending element which bends one of the various tips out of the plane of the lancet body in order to provide only one lancet tip for use. This is especially preferable for lancet tips that are arranged linearly relative to one another.
摘要:
An analysis system for determining an analyte of a body fluid comprises a test element and an analysis instrument having a measurement and evaluation unit. The test element has a sample application zone and two analysis zones and a reagent system, whose reaction with the analyte results in a detectable change characteristic for the desired analytical result. The measurement and evaluation unit comprises two analog measuring units, in each of which an analog measurement signal corresponding to one of the analysis zones is generated, two analog-digital converters for digitizing the analog measurement signal, a comparator unit for comparing control data values based on the digitized measurement signals, and a final processing unit, in which, if the determined deviation between the control data values of the digitized measurement signals is less than a predefined value, at least one of the control data values is allowed to pass for further processing into the desired analytical result.
摘要:
The invention concerns a process for producing a diagnostic test element for analyzing a body fluid in which a lancing member that can puncture a body part is provided with a collecting channel for body fluid obtained by the puncture, wherein the collecting channel exhibits capillary action, and wherein a sensor member for an optical or electrochemical measurement is connected to the lancing member. According to the invention, the sensor member and the lancing member can be joined together as interlocking connecting components wherein a measuring element of the sensor member is inserted into the collecting channel through an insertion opening of the lancing member.
摘要:
The invention relates to a micropump for peristaltic pumping of a liquid medium and to a device which contains a peristaltic micropump and which is for metered administration of a liquid drug.
摘要:
A microsampler puncturing system for collecting a body fluid from a body part is described, comprising a sample collection unit having a piercing element, and a puncturing instrument having a drive, by which a sample collection unit is movable on a movement path for piercing the piercing element into the skin of the body part and withdrawing it in a piercing and retraction movement, a setting device for setting the puncturing depth of the piercing wound to be generated, and a control device for controlling the piercing and retraction movement having the following sequentially executed movement phases: a forward phase, a retraction phase, and a collecting phase (S). The setting device is settable independently of the chronological mean of the defined residual puncturing depth (dr), with reference to the collecting phase.
摘要:
A method is presented for determining the concentration of an analyte in a liquid sample using a reagent system. The reaction of the sample with the reagent system results in a change of the quantity of a fluorophore, the quantity of the fluorophore correlating with the concentration of the analyte, a characteristic measurement variable for the quantity of the fluorophore being measured, and the concentration of the analyte being determined using an evaluation algorithm on the basis of the measurement variable. The reagent system is integrated in an analysis system and the fluorescence lifetime of the fluorophore is used in the ascertainment of the concentration of the analyte.