Abstract:
An analytic instrument of kinetically measuring light absorption characteristics of a plurality of independent samples contained in disposable test tubes arranged in a circular pattern about a single light source. The instrument is designed to be used with a host personal computer and is not specific to any particular type of assay. The instrument obtains and temporarily stores raw data in the form of digitized output signals from the plurality of photodetectors and periodically passes them to the host computer. An incubator has test tube wells arranged in a circular array equidistant from a single incandescent light source. The circular symmetry controls the termal gradients in the incubator such that all of the samples are disposed on the same isotherm and all of the photodetectors are disposed on the same isotherm. The instrument is designed for use with disposable test tubes, and sources of error arising from optical variation in such test tubes are minimized by providing a separate detector for each tube and by holding the tube fixed with respect to the detector. The lignt output from the single light source is continuously monitored and is kept constant.
Abstract:
A device for determining the erythrocyte sedimentation rate (ESR) of blood samples comprises receiving means (4) for receiving blood sample tubes (3) at a number of fixed positions therein, measuring means (16) for detecting blood sample tubes placed in the receiving means and measuring ESR's of blood samples driving means (10-12) for driving the measuring means horizontally along the number of fixed positions of the receiving means, and a computer unit. The computer unit is provided with timing means for providing a position-related control signal for each identified blood sample tube when a predetermined time period has elapsed since the blood sample tube was placed in the receiving means. A control means is used to determine the position of newly placed blood sample tubes in the receiving means and for controlling the measurement of the ESR's. The measuring means may comprise a CCD-image pick-up (13) or a single optical sensor. An output means is provided with a same plurality of two colour LED's as the plurality of fixed positions in the receiving means. The device may comprise a bar code reader.
Abstract:
A spectrophotometer provided with: a sample changer for holding a plurality of samples to be analyzed, each of which is given an identification code, and positioning a selected one of the samples for measurement; means for setting a measuring wavelength for each of the identification codes of the samples; means for setting an identification code for the measured data of each of the samples; means for setting a coefficient to be used for processing the measured data of each of the samples together with an identification code; means for setting an operation expression composed of the identification codes of the measured data of the samples and the identification code of the coefficient; means for storing the data obtained by measuring each of the samples with the corresponding one of the wavelengths set for the sample held by the sample changer in correspondence with the corresponding one of the identification codes of the measured data; and means for reading out the data stored in the storing means and the coefficient set in the setting means in accordance with the identification codes of the measured data and the coefficient which constitute the operation expression set in the setting means, and performing an operation for data processing in accordance with the operation expression.
Abstract:
On fait passer l'échantillon de sang d'un emplacement in vivo directement dans le récipient d'échantillons au moins partiellement transparent d'un dispositif de prélèvement d'échantillons. Ce récipient d'échantillons comporte une chambre de mesure dans laquelle se trouve un luminophore dont la luminescence est étouffée en présence d'oxygène. On détermine la teneur en oxygène sur la base de la radiation mesurée par un détecteur de radiation. Sont également décrits un dispositif de prélèvement d'échantillons et un système de détermination photométrique in vitro de l'oxygène dans un échantillon de sang.
Abstract:
An analytic instrument of kinetically measuring light absorption characteristics of a plurality of independent samples contained in disposable test tubes arranged in a circular pattern about a single light source. The instrument is designed to be used with a host personal computer and is not specific to any particular type of assay. The instrument obtains and temporarily stores raw data in the form of digitized output signals from the plurality of photodetectors and periodically passes them to the host computer. An incubator has test tube wells arranged in a circular array equidistant from a single incandescent light source. The circular symmetry controls the termal gradients in the incubator such that all of the samples are disposed on the same isotherm and all of the photodetectors are disposed on the same isotherm. The instrument is designed for use with disposable test tubes, and sources of error arising from optical variation in such test tubes are minimized by providing a separate detector for each tube and by holding the tube fixed with respect to the detector. The lignt output from the single light source is continuously monitored and is kept constant.
Abstract:
The method is a method of photometric in vitro determination of a blood gas parameter in a blood sample. The blood gas parameter is oxygen. The method comprises transferring the blood sample to a sample container with a transparent wall portion and with an inlet opening and otherwise being essentially sealed, said sample container incorporating a luminophor whose luminescence is quenched in the presence of oxygen, disposing the sample container in optical communication with an optical system comprising a radiation source and a radiation detector, transmitting radiation from the radiation source to the sample container to excite the luminophor, transmitting the luminescence emitted by the excited luminophor to the radiation detector, and detecting and registering the luminescence. A sample container and a system for photometric in vitro determination of oxygen in a blood sample is also described.
Abstract:
The method is a method of photometric in vitro determination of the content of an analyte in a sample of whole blood. The blood sample is transferred from an in vivo locality directly to the sample container of a sampling device. The sample container comprises a measuring chamber wherein there is provided a transparent body the radiation transmission characteristics of which vary with the content of analyte in the environment of the body. The transparent body is equilibrated with the sample and thereafter the measuring chamber is deformed in a controlled manner while the portion of the measuring chamber located in the radiation transmission path is drained for blood sample. The analyte content is determined on the basis of detection of the radiation transmitted from the radiation source through the deformed measuring chamber and the transparent body and to the radiation detector. A sampling device and an analyzer for use in photometric in vitro determination of the content of an analyte in a blood sample is also described.