A father hurled a baby’s bottle which hit his five-week-old son on the head causing bruising to his skull, a court was told.
David Payne then tried to commit suicide by hanging himself in the loft of the home he shared with the mother of his son.
The baby was taken to hospital where he was under observation.
Payne, 28, of Elmridge Crescent, Bispham, pleaded guilty to assault and using violence to enter an address.
He was refused bail and remanded in custody for pre-sentence reports by Blackpool magistrates.
Moira Hallam, prosecuting, said Payne had become depressed and threatened to hang himself in the loft of the property.
On November 4 Payne had been out and at 8pm was banging on the door of his house trying to get in.
He broke a PVC door to get in.
He was angry, called his partner names then threw a baby’s bottle with some milk in it.
The partner had their baby in her arms and the bottle hit the child on the side of the head.
Payne told his partner he was going to hang himself and she heard noises in the loft.
The police then arrived and arrested him.
When interviewed Payne said he had been out drinking and taking drugs.
Brett Chappell, defending, said: “He was absolutely devastated when shown the pictures of the baby.
“It is shame he will have to live with for the rest of his life.”