In sentencing Judge Jeremy Jenkins said after the pair had separated Mr Brown “became withdrawn jealous and controlling”.
He said Ms Brown’s new partner was a “source of resentment” for him which led him to install secret recording equipment in the separate room where she was sleeping.
On the night of the attack, Judge Jenkins said Mrs Brown pleaded with him to stop.
As she put the dummy in her child’s mouth she was in no position to defend herself” when he stabbed her twice, before chasing her to the bathroom to stab her again, he said.
Judge Jenkins said Brown fled the scene “leaving your wife on the bathroom floor with serious injuries” in a “brutal sustained attack with a knife which your deliberately took to use”.
“It was the ultimate act of cowardice to stab her in the back on three separate occasions.”
“Your intention to kill her, was clear,” he added.
Darren Brown was sentenced to 18 years, with at least two thirds to be served in custody before being released on licence.
A restraining order was also put in place indefinitely, which prevents Mr Brown from contacting Corinne Brown or going to her work or other premises where she may be staying or living.
