Renars Geslers, 32, of Hoyle Mill Road, was sentenced to a hospital order together with a restriction order - meaning he is unable to be released until the Ministry of Justice sanctions it.
At around 12.34am on May 25, police were called to the home of 61-year-old Agita Geslere on Brierfield Close, to reports of a disturbance at the address - police attended the scene alongside Yorkshire Ambulance Service.
A family member who was in the flat at the time described hearing Agita screaming from the bedroom and, when they left their room, saw Renars carrying out a ‘sustained attack’ on his mother.
When the family member tried to help Agita, he pushed them away and shut the door on them - he then fled the property.
The 61-year-old was taken to Barnsley Hospital but was pronounced dead shortly after.
Officers attended Geslers’ home where they found him washing clothes in his washing machine - he was then arrested.
He was initially charged with the murder of his mum, but later pleaded guilty to manslaughter through diminished responsibility and was sentenced to the hospital for treatment.
Detective Inspector Adam Watkinson, of South Yorkshire Police’s major crime unit, said: “This was a harrowing and violent incident which would have brought shock to the community around Brierfield Close.
“This incident will have torn a family apart, and we hope that the conclusion of this case will help them begin to move forward from what happened.”