WEll - we had an ESB appliance which would tie into the various HL7 capable systems such that we could integrate for certain services, and provide interfaces/applications which turned an ipod touch into a quick duty/assignment/nurse-call/alert/control device.
Basically the intention was initially to integrate the ipod touch as effective a remote to the hospital.
Tie in with RTLS, assignments, results, orders...
So, yeah - it worked pretty well. Had support from nurses and doctors, but it was too early...
We were told by too many people it was too expensive and too small and nobody would want to interact on the phone.
We knew the ipad was coming... but failed to convince people.
About two years afterward, the iPad came out - we had already folded and released what did open source to OpenVista, and then Dr. Chrono was able to get traction where we couldnt.
(We were only two founders, no funding.)