| 摘要 |
<p>A method of mixing blood taken from a patient with a fluid, to be returned to the patient's blood vessels, involves holding a given volume of the extracted blood in a flexible bag (1) which can be emptied by compression. Separately, the additional fluid is drawn from a supply point (26) into a second (2) and similar bag. The contents of the first bag are transferred to the second bag by squeezing it out manually before or after the second bag has been charged. The mixture in the second bag is squeezed out. Also claimed is the device for carrying out the method, having at least two flexible bags (1,2), which can be emptied by squeezing and compression. The first bag is linked to the patient by a catheter (8,14) for blood extraction. The bags are linked by a tube, so that their contents can be transferred. The second bag is linked by a tube to the supply (26) of added fluid for a given vol. to be passed into the bag. A tube (32) gives a link between the second bag and the final bag, if in place. A tube (40,46) takes the blood and fluid mixture from the second bag. An optical scale (4,6) shows the volumes present in the bags. Closures (10,24,34,42) are opened and closed selectively to control the flow through the tubes (22,32) and catheters (8,14,40,46).</p> |
