Abstract: A compact analyzer for dry biochemical analysis of blood samples, integrating onto a common chassis (11): a measuring chamber (20) adapted to receive a disposable rotor (13) including microtanks (13A, 13B) containing dry reagents, a digital dilution module (21) of fixed or variable ratio defined as a function of the species of the sample to be analyzed, a sample centrifuging module (12) adapted, inside the measuring chamber, to centrifuge the rotor and position it angularly, an optical module adapted to apply beams of light to microtanks of the rotor, this optical module including a flash-lamp type light source (14) and a reference light sensor (16), an electronic processing and control system (23, 24, 25) including an external memory reader (26) adapted to read a portable external memory (27) containing at least information characteristic of at least the disposable rotor in use.

Abstract: A compact apparatus for automatically analyzing a blood sample having a pumping assembly, a dilution assembly and a measuring assembly. The pumping assembly includes pumps for air, lysis and diluent. The dilution assembly includes a sampling needle, and containers for waste, white corpuscle dilution, and red corpuscle dilution. The measuring assembly includes a measuring chamber, and a device for counting platelets, red corpuscles, white corpuscles and hemoglobin in the blood sample. Both red and white corpuscles are counted in the same measuring chamber. A plurality of pipes establish fluid communication between the elements of the apparatus. A plurality of electro-valves are adapted to automatically open and close the pipes thereby regulating fluid flow between the pumping assembly, the dilution assembly and the measuring assembly. One of the electro-valves is adapted to shutoff a diluent source and substitute water therefor, whereby the apparatus is rinsed with the water to avoid crystalization.

Abstract: A device for taking samples of arterial blood with a view to its subsequent gasometric analysis comprises a main body forming a reservoir in which a free piston travels. Said piston isolates the blood from the air and cannot be manipulated by the operator. The device also includes a filter located at the end of the piston stroke which is permeable to air and impermeable to blood, allows the operator to observe the blood as it advances, and acts as a barrier to excessive blood flow, and a stopper which ulitmately seals the system and facilitates its tranport. In contrast to conventional invasive systems, this device, which does not need to be sterilized, makes it possible to obtain a blood sample which, after sampling, is only minimally contaminated with the ambient air, is available in a sufficient quantity, and is only slightly coagulable.

Abstract: A device for presentation of receptacles containing samples of liquid with a view to transferring them to an automatic analyzer. The device comprises a cylindrical drum forming a core integral with at least two circular crowns perforated or with cavities to receive the receptacles and sloping them relative to the axis of the drum which is maintained horizontal during the presentation of the samples with a view to transferring them into the analyzer. Such a device having a small bulk enables ideal agitation as a consequence of the rotation and tipping over of the samples during their presentation.