Apparatus for testing blood samples has a reaction vessel with limited surfaces forming a reaction zone for blood platelets to adhere to a reaction surface for reactions to be examined

摘要

The apparatus to test a blood sample has a reaction vessel with a reaction zone between two facing limit surfaces. The reaction surface for the test is at the rotating limit surface (1) or the limit surface with an uneven structure (2). The apparatus to test a blood sample has a reaction vessel with a reaction zone between two facing limit surfaces. The reaction surface for the test is at the rotating limit surface (1) or the limit surface with an uneven structure (2). The rotating limit surface (1) is flat, and the fixed limit surface (2) has a conical structure, or both surfaces (1,2) are conical. One or both surfaces (1,2) can be concave or convex with different curve radii. The rotating and flat limit surface (1) is supported at the base of the reaction vessel (5), which is at least partially conical. The reaction vessel (5) can rotate in relation to a fixed insert, where the vessel base and the facing under side of the insert form the limit surfaces (1,2). The rotating section (7) of the rotating limit surface or the insert within the vessel are of light-permeable materials. The reaction vessel (5) is of plastics. The rotating section (7) or the insert has an air escape opening. A unit (9) for the circulation of the blood sample is in the reaction vessel (5), to circulate the blood at right angles to the direction of rotation. A feed delivers a prepared and split blood sample into the reaction zone (3) directly from a processing unit or by a hollow injection needle into the reaction zone (3) near one of the limit surfaces (1,2) or penetrating through a surface (1,2). The reaction surface is divided into a number of reaction zones, with different reaction characteristics. Substances can be added to the blood sample and/or during processing before reaction. A monitor is at the support for the rotating surface or in the drive train between the drive and the rotating vessel, to measure the forces or the changes in the forces during the blood sample tests. An Independent claim is included for a blood examination method where the blood sample has been split in advance.