The device, which experts believe could be safer and more effective than forceps, has been backed by the World Health Organisation which is co-ordinating a trial across hospitals in India, Switzerland, Argentina and Monaco.
Jorge Odon, 59, came up with his invention after watching a YouTube video on how to retrieve a cork from inside an empty wine bottle.
The trick works by inserting a twisted-up plastic bag into the bottle and inflating it until it forms a seal around the cork and can be used to tug it out.
So far the device has been tested in 30 Argentine women, with positive results, and funding is in place for it to be tried in a further 270 births.
Odon, who has no medical background, said that doctors had been surprisingly open-minded.
"I always say that this project is driven by a higher power - not only the idea, but also the people who appeared during this journey of more than seven years," he said.
Odon's device is cheap and much easier to use than forceps, making it attractive to developing countries, experts said.
It could also address shortcomings with the present options: forceps, which have a higher risk of injuring the mother, or suction cups attached to the baby's scalp, which cannot pull as firmly.
The device is being produced by a syringe manufacturer in New Jersey and should cost less than 30 pounds, but the company said that it would charge poor countries less.
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