Haven't tried, but my guess is that it would proc on you once when you first summon the beacon.
Where to find me after the end:
The Secret World - Arcadia - Shinzo
Rift - Faeblight - Bloodspeaker
LotRO - Gladden - Aranelion
STO - Holodeck - @Captain_Thiraas
Obviously, I don't care about NCSoft's forum rules, now.
Procs you. I have it in TB.
Don't think it procs anyone else, but never asked
If I place a Numina's proc in Triage Beacon, who gets the benefit? Just me? Me and any allies in the area of effect? Just the beacon pseudopet?