Device for detecting and measuring the blood coagulating time by means of a metal block, which can be temperature-controlled and serves to accommodate the measuring cuvette, a stirring device and a light-optical (photooptical) turbidity measuring device

摘要

The invention relates to a device for detecting and measuring the blood coagulating time by means of a metal block, which can be temperature-controlled and serves to accommodate the measuring cuvette, a stirring device and a light-optical (photooptical) turbidity measuring device. It consists of the combination of the following features: the stirring device is constructed in a manner known per se as a magnetic stirring device (16) which is located in the metal block (11) below the measuring channel (8) which serves to accommodate the measuring cuvette (17). Located as stirring member in the measuring cuvette (17) is a metal ball (23) which can be brought into operational magnetic contact with the magnetic stirring device (16). The measuring cuvette (17) is held in the measuring channel (8) by means of a clamping device (18) and is located in the light-optical beam path (32) of a light-optical scanning device (13) which is known per se and to the light source (15) of which an operating voltage is applied which is at least half as large as the rated voltage, and the optoreceiver (14) of which is connected to a measured value (measurand) unit (27). <IMAGE>