You are speaking of the "electronic BrainPal" or the "bionic BrainPal", right?
First try to save and reload.
Normally it should look something like this:

If that doesn't work, can you tell me which mods you're using?
Edit:
There is another way to reactivate it:
In the mod there is a special building I've made to activate, when the MapComponent doesn't work:
Go into the mod in this path: ..\Mods\Miscellaneous\Defs\ThingDefs
There you'll find a file named BrainPal_Buildings_Furniture.xml_disabled
If you change the extension to .xml you'll get a new medical bed that is slightly better then the normal medical bed. But once you've placed it, it should re-add the missing operation recipe..
If that doesn't help, I'll release a new Miscellaneous version this week. In there I'll change the add procedure a bit, so that it checks from time to time if the recipes are still available..