Are there moves derived from the "dim mak"?

I've heard there is a move derived from the 'dim mak' called the 'dim lo'. It's designed to immobilize an attacker in an instant, this is how it goes, when someone tries to stab you with a knife your hand spings and grabs the hand they hold the knife in, twisting it up their back, you seize them by the neck with your other hand, throwing them to the floor. I've never heard of it.