The woman in question was Marguerite, the wife of George Walezer, who lived in 16th-century Vienna. In 1545 she became pregnant and felt the normal movements of the baby during pregnancy. When she went into labour with 'furious and sharp pains' she called her mother and some midwives. During the long labour they heard a noise and commotion like a cracking inside the mother and thereafter the fetal movements ceased. They assumed, correctly it seems, that the baby had died. The midwives used all their skills but failed to deliver either the baby or the placenta.

Some days later, feeling her pains return, Marguerite summoned a series of most eminent doctors from far and wide, imploring their help. The doctors merely gave her a series of drugs but with no effect. Marguerite therefore 'resolved to let nature take its course and bore with exceeding pain for the space of four years this dead corpse in her stomach'. In the fifth year she finally persuaded a surgeon to open her up and remove the child which was 'half rotted away'. The operation took place on 12 November 1550. Marguerite soon recovered and was 'so full of life and so healthy that she can still [i.e. in 1559] conceive children'.

Marguerite’s ordeal may have been due to an abdominal ectopic pregnancy. Most ectopic pregnancies occur when the fertilized ovum becomes implanted in the fallopian tube, and a tubal ectopic pregnancy almost always dies after two or three months of gestation. But just occasionally the fertilized ovum becomes implanted in the wall of the abdominal cavity. Sometimes, it is thought, abdominal ectopic pregnancy starts with implantation into the fimbriated end of the fallopian tube and then migrates to the abdominal cavity and invades the peritoneum secondarily...

It may be that Marguerite’s dead baby was never delivered vaginally because it was never in the uterus. Being shut off, so to speak, from the outside world, a dead baby could have escaped being the source of an infection...

In this case, when a surgeon finally agreed to operate, he did not perform a caesarean section; he simply opened the abdominal wall and promptly saw and removed the remnants of the baby. The placenta would not have been a problem because in abdominal ectopics if the baby dies the placenta soon shrivels and can be left intact. This one had five years to shrivel.

André Smout, a gastroenterologist at the University of Amsterdam in the Netherlands, said he read those reports when they came out.

"But we never saw the condition, so we didn't believe that it existed in real life," he said.

Smout's doubts persisted until he and colleagues studied a small group of patients a few years ago. The researchers gave eight patients with a reported inability to burp a "belch provocation" in the form of carbonated water, and used pressure sensors to observe how their throats moved. Indeed, the air stayed trapped. A Botox injection resolved their problems by giving them the ability to burp, or, to use an academic term, eructate.

"We had to admit that it really existed," Smout said.

The name 'Save-the-Baby' is not intended to imply that the product will 'save babies'

The opportunity to buy the Save the Baby name with the product was a major factor in the deal because the Food and Drug Administration now bans such extravagant and possibly misleading brand names.