An interesting product. I would want to learn a bit more about it before committing to purchase. Question #1: Would this device be more likely to evacuate the obstruction you are going after, or stomach contents? Question #2: How does it perform for partial obstructions, or obstructions where the offending piece of food/whatever is small, and is not creating a seal on its own - the seal is created by the offending piece pinning the epiglottis down over the trachea?

If this device has a good track record in real world saves, and has not been found to delay other possibly better treatments - then what a fantastic idea! It's definitely worth investigating. But I wouldn't jump right in and buy one without first doing that additional investigation. This is an example of a device that I would put much more trust in 3rd party (uninvolved) doctor recommendations that in company advertising department recommendations.