 According to Tydeman, what has caused the Tydeman tube to not get sold/approved?
Its sole purpose was to test the effectiveness of a novel device called a Tydeman tube. To understand the desperation of Debra and how the Tydeman tube might help to relieve it requires a brief foray into basic obstetric knowhow. One audit has suggested that roughly 8,000 babies get stuck and have to be delivered by caesarean at a stage when their mothers are fully dilated. "Some of the babies will be so close to coming out by the normal route," says Tydeman, "that it's then difficult to get them back up and remove them through the hole in the woman's tummy." "There are strong opinions about why it happens and what to do, but very little research evidence," says Tydeman, adding that many of these opinions are contradictory.
 Because his device is so promising, investors want him to pay for its commercialization
 Any products that could possibly cause death during childbirth are generally viewed with more apprehension  Because his device is so promising, investors want him to pay for its commercialization  Too many investors are competing over the rights of commercialization  Tydeman does not approve of the prototypes generated by potential investors