Postpartum hemorrhage and uterine balloon tamponade

I read with interest the article by Doumouchtsis and co-workers about using the oesophageal balloon of a Sengstaken Blakem\ore oesophageal catheter (SBOC) in postpartum hemorrhage (1). I have been using the gastric balloon of an SBOC until now, because although the oesophageal balloon can be used to provide tamponade (2,3), it was the gastric balloon of an SBOC that provided the tamponade when its use was first described in obstetrics (4). Having looked at Figures 1 3 of the paper, I am confused as to what device the authors actually used, as these figures appear to show a catheter with only one balloon to provide tamponade in the same manner as a Rusch hydrodistension balloon (5) or a Bakri balloon (6). A single large balloon is also typical of a Linton Nachlas tube used for treating varices in the fundus of the stomach, not the oesophagus. The presence of only a single balloon means that this device cannot by definition be an SBOC or a Minnesota catheter as these always have two balloons, one labeled oesophageal and the other gastric. I would be grateful for clarification as to the exact description, catalog number and manufacturer of this device, to add to the range of single balloon catheters already available for use in uterine tamponade.

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