The 41-year-old was pounced on by two men in Wishaw at around 10.30pm yesterday.
The brutes forced their way into a North Kilmeny Cresent property before assaulting their victim and demanding money.
They did not make-off with anything and the man was taken to hospital for treatment. His condition is unknown at this time.
Detectives probing the incident believe a black Volkswagen Golf, spotted in the area at the time, could hold they key to their enquiries.
The first of the men is described as being around 5ft 10, medium build, with brown eyes and a high-pitched voice. He was wearing a black hoody and black trousers, which were grey at the top.