I would recommend contacting SOGON, NANNM and ARFH for support of this proposal. All have experience in training of health professionals and the latter in task shifting to lower levels of healthcare worker.
Good concept that seeks to address some of the challenges associated with current alternatives (NASG and uterine tamponade), and one of the key causes of maternal death and severe morbidity from PPH - transfer time to a facility capable of managing the complication. Cost of the device will be one of the main barriers to widespread use. Need to consider whether it will be reusable (ie: look into how the device can be cleaned without affecting performance and condition to ensure infection control - critical for a device which is likely to come into contact with blood.) Also look into how the device gets back to the original facility after the woman is transferred so that it is available for the next mother - consider the whole system. Good luck!