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凝血酶元时间的测定是临床检验中的一项重要内容。目前国外现代化医院已经采用自动测定,故检测速度快,效率高,误差小,也减轻了化验人员的劳动强度。自动测定凝血酶元时间的方法有模拟挑丝、比色和磁电等几种方法。我们所研制的NXY-781型凝血仪采用了旋转磁片法,它能自动测定凝血酶元时间(PT)、部分凝血活酶时间(KPTT)和复碱时间(RT)等项目。一、旋转磁片法测定凝血时间的原理在盛放血样的塑料器皿中放入一磁片,血浆未凝时,在旋转磁场的作用下,磁片产生的转动力矩大于血浆的阻力,磁片旋转(见
Determination of prothrombin time is an important part of clinical testing. At present, modern foreign hospitals have adopted automatic measurement, so the detection speed, high efficiency, small error, but also reduce the labor intensity of laboratory personnel. Automatic determination of thrombin time method simulation pick the wire, colorimetric and magnetoelectric and other methods. The NXY-781 coagulator we developed uses a rotating magnetic disk method that automatically measures items such as PT, partial thromboplastin time (KPTT), and complex alkali time (RT). First, the rotating magnetic plate method to determine the principle of clotting time In full bloom blood plastic containers into a magnetic film, the plasma is not coagulated, under the action of the rotating magnetic field, the torque generated by the magnetic sheet is greater than the plasma resistance, Rotate (see