FLUID DOSE, FLOW AND COAGULATION SENSOR FOR MEDICAL INSTRUMENT

摘要

An instrument (100) and a method for determining a coagulation characteristic of blood, a blood fraction or a control comprise a radiation-reflective surface (194), a first source (244) for irradiating the surface (194), and a first detector (242) for detecting radiation reflected from the surfac e (194). A cuvette (101) holds a sample (514) of the blood, blood fraction or control the coagulation characteristic of which is to be determined. The cuvette (101) has two opposed walls (506, 508) substantially transparent to the source (244) radiation and reflected radiation. The first source (244) and first detector (242) are disposed adjacent a first one (508) of the two opposed walls (506, 508) and the radiation reflective surface (194) is disposed adjacent a second (506) or the two opposed walls (506, 508).