Anthony Anderson, 27, of Raby Road, Hartlepool, was sentenced for outraging public decency when he degraded 50-year-old Christine Lakinski, who had collapsed in July this year.
Judge Peter Fox, the recorder of Middlesbrough sitting at Teesside Crown Court, said there were few similar cases to compare.
He said: "You violated this woman in an incredible way and the shocking nature of your acts over a prolonged period of time must mean that a prison sentence of greater length is appropriate in this case."
The court heard how Anderson, a former soldier, was celebrating his 27th birthday on the day he degraded his victim.
She had been visiting friends and was walking home with some laminate flooring when she collapsed, striking her head as she fell in the street.
She was spotted by a girlfriend of one of Anderson's friends and a group gathered around her body.
Anderson kicked her on the foot then poured a bowl of water over her prone body, but she did not respond.
Anderson then told his friends he was going to urinate on the woman, as one of them filmed it on his mobile phone.
In an ordeal lasting around 30 minutes Anderson also used shaving foam from a can to further degrade his victim.
i hope this b*stard gets beaten every day when he is inside and p*ssed on, as well as being someones b*tch
