For your information the triple compartment US Airborne Medical Packs were only introduced towards the end of the war (and although I have seen one dated example from 1944) I suspect that the bags were used for the first time during Operation VARSITY, in 1945. However, rigger made examples of the bag can be seen in use during OVERLORD, as seen in the image at the top of the forums.
In addition, although supposedly the Airbonre Medical Kit (i.e. Item #9711600
) only consistsed of one pouch, I have read a couple of reports of 82d Airborne Vets who claim that they actually jumped with two of the bags, one with the components outlined for Item #9711600, the other pouch was filled with supplies necessayr to establish an aid station on the ground, and once one had been set up, the extra pouch would be ditched. I haven't been able, however to find any images to support this view.
Hope that helps,