So, the Medbag would 'hold' such tools as a MedRite reusable syringe, a PocketDoc blood analyzer, a PocketDoc chemical analyzer or other such tools that would be portable. Perhaps even have the ability to 'check stats' and evaluate for PDS? Or, even be able to treat infections/diseases if the proper medications have been 'stored' in the Medbag.
Where the Medkit requires a battery and re-stocking with medpaks, the Medbag would also require a battery and would need to be re-stocked with vials and, maybe even medicines? Not sure how complicated that would be?