Please be sure to have a room - with a lock - you can go to and be safe, with a phone to call for help.
And don't be afraid to call the police, they may be your way to access more help - and your situation needs to be evidenced sometimes for 'professionals' to take it seriously.
Make a note of all the incidents you have dealt with so that the nurse is made aware that this is a situation that cannot continue. YOU as well as your partner have a right to be safe in your home.
Call your GP and anyone else involved in your welfare and your wife's, they need to know that your safety and therefore hers too is at risk.
She needs to be helped out of this behaviour, if there is medication that can 'sooth' her, good. If some respite for you and a place to assess her can be arranged, that may be the way you need to go.
This must be heart-breaking for you - but definitely time to get in others to help.