| 摘要 |
<p>The mixing machine has a device (7) such as a balance for measuring the volume of the biological fluid, especially blood, which is taken by a natural flow, a pump for an anticoagulant and/or preserving solution such as citrate phosphate dextrose, and a pump control unit (8). The control unit contains one device for determining the volume of the pumped solution and another for regulating the speed of the pump. According to the required biological fluid/solution ratio it calculates the theoretical volume of the solution to be mixed with the fluid drawn, compares the theoretical volume with the pumped volume of the solution, and adjusts the speed of the pump to give the required ratio.</p> |
