A vicious thug took a bite out of his sister's ear before throwing a fridge at her head.
Steven Portman, of Orrell Lane, Orrell Park, targeted Tracy Heaps in a frightening drunken rage.
The 35-year-old tried to throttle his vulnerable victim, who was forced to fight back with an iron.
She was left with injuries including a broken nose, a black eye and a wound that exposed the cartilage in her right ear.
Liverpool Crown Court heard Portman was already banned from Grey Road in Walton, due to a restraining order imposed in February.
However, Kyra Badman, prosecuting, said that order - running until 2025 - was actually put in place to protect a different woman.
On June 6, Miss Heaps was at her flat in the street when Portman arrived and knocked on the window, so she let him in.
Miss Heaps said her brother was drunk and started an argument, although she couldn't remember what it was about.
The court heard this row turned violent and Portman hit his sister a number of times to the face and head.
Ms Badman said: "She describes him pinning her down on the bed and biting her to the right ear.
"Mr Portman then tried to wrap the electrical cord from a mini fridge around her neck, before picking up the fridge and throwing it at her head, causing her to bleed from the head.
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"She attempted to defend herself by swinging an iron towards him, but she said this seemed to wind him up more. At one point he had a cigarette lighter in his hand and threatened to burn the flat down with her inside."
Eventually the victim managed to get her brother out of the flat and called police, who found blood spattered around the home when they arrived.
Miss Heaps was taken to hospital suffering from a fractured nose, swelling to her left eye and bruises to her forehead.
The bite mark consisted of a wound around 2cm by 1cm, which exposed cartilage and required stitches to close it.
Portman, located by police in the hallway of the flat, was arrested and taken to custody. When asked if he understood why, he replied: "I'm guilty."
He gave a "no comment" interview, but later admitted wounding and breaching a restraining order.
The court heard Portman had 40 previous convictions, dating back to 2002, which include public order matters, breaches of the peace and assaults on police.
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He was convicted of battery in 2010, harassment in 2011, robbery in 2012, battery in 2016, harassment in 2017, then battery and possessing a bladed article in 2019.
Earlier this year he was again sentenced for battery and on May 13 was jailed for 28 days for breaching the restraining order made to protect another woman.
The court heard he attacked his sister on the last day of his licence period for that sentence.
Ms Badman said efforts were made to contact Miss Heaps to obtain a victim personal statement, but she had engaged with the police.
Peter White, defending, said his client had issues with "thinking skills", drugs and alcohol, and "struggles with day to day living".
He said: "It speaks volumes for his thought process that when released from custody, given a restraining order, he then goes and secures a tenancy in the very building he's prevented from entering."
Mr White said Portman was "remorseful", adding: "He tells me he's motivated to resume the relationship with his sister at some point and whilst he's in custody he's done alcohol treatment courses, which clearly he's in dire need of."
He said Portman was being prescribed medication for depression and undertaking reading and writing programmes to address literacy issues.
Judge Robert Trevor-Jones told Portman the attack was a serious offence.
He said: "First of all it was on your own sister, it happened in her own home, and it was a sustained incident."
Describing her ordeal, the judge said it was "a very frightening incident indeed for her".
He added: "Fortunately the injuries were not as serious as they might have been, but nevertheless I've seen the photographs.
"Her face was badly swollen, she suffered a break, a fracture of the nose, there is clearly bruising to her eye and her face, and she needed stitches to close up the wound in her ear, which you had caused by biting her."
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Judge Trevor-Jones said he also bore in mind the fact Portman had a record for violence, was "drunk", and his sister's vulnerability.
He said: "She had a slipped disk and was a vulnerable victim in any event - and also it was on the last day of your licence from the previous prison sentence."
The judge jailed Portman for three years and made a new restraining order, preventing him from entering the street or contacting his sister for three years.