Sorry fella, but I still disagree.
Now as a physician you may be experienced enough to be able to use one; even to the layman they might me simplistic to use...
...however, the problem comes in knowing WHEN to use it, and as a physician/doctor surely you must know the issues surrounding your average joe diagnosing.
Only in the US would you be advised to keep this sort of equipment in your house; I suspect right next to the gun used for self defence.