| 摘要 |
<p>Apparatus for determining the haemostatic reaction of a blood sample comprises a columnar container (1) for the blood sample, a pump (12, 13) for causing the blood sample to flow through a tube (16), whilst simultaneously stirring the blood, by displacing it with an immiscible liquid, such as liquid paraffin, and a needle (28). The needle (28) has a substantially parallel sided shank, and is mounted for movement to pierce a hole in both walls of the tube (16) substantially perpendicular to its surface. The back pressure in the tube is maintained at substantially the venous pressure. An optical system is provided for viewing the tube under magnification, so that the exact moment of cessation of bleeding can be determined. Thrombolytic activity can be measured, by ceasing blood flow in the tube when haemostasis occurs, and observing the decrease in pressure in the tube with time.</p> |
