The present invention relates to a gripper for blood transfusion bags. This gripper comprises two opposing straight elements 1 whose length is substantially equal to the width of the top part of the bag and which are connected together at one of their ends, these elements each including a lower longitudinal skirt 7 of rounded cross-section forming a gripping zone over the width of the top part of the bag. Application especially to the centrifugation of blood solutions contained in these bags. IMAGE
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