| 摘要 |
The transfer unit, designed to pick up a calibrated droplet of blood from a transfusion pouch sample segment for matching, consists of a tube (1) which is open at one end (3) and closed at the other (2). The closed end contains a cannula (4) with a pointed inner end (5). The tubular segment (9) containing the sample for testing is inserted into the open end of the tube after folding it in two, so that one half of it is pierced by the cannula. The folded segment is guided towards the cannula by the inner surface of the tube, which has a cross-section in the form of two isosceles trapezia joined by their larger bases and having their smaller bases rounded.
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