If it does not I'd like to suggest that if a person's restrained, or @trusts you that you can "Knockout" them with it as with an operating room.
I definately think that "knockout" should be somehow integrated into an item. I hear that the ZMI kitbag used to be able to do it. I can see that it can have potental abuses, however I'd say that if someone's grappling, or has you otherwise restrained via cuffs or whatnot, or if you have @ trust on that a knockout should be able to be preformed easily. Just to make sure, maybe a provision where someone who's knocked out can't be killed. By drugs of course, if you've went through standard combat and were physically knocked out standard rules should apply.