A police officer was attacked as he took a man to hospital after being told an ambulance would take several hours to arrive.
Officers took the decision to transport David Lynch to hospital after he kept collapsing to the floor at his home.
As he was being helped to the police car for the journey the civil servant headbutted one of the police officers.
Lynch, 62, of Hockley Place, Grange Park, pleaded guilty to assault on police.
He was bailed for pre-sentence reports and will be sentenced at a later date by Blackpool magistrates.
Pam Smith, prosecuting, said police received a report a man was threatening to harm himself on January 29.
Officers went to Lynch’s home and found him holding a knife to his throat, threatening to stab himself. Officers eventually managed to persuade him to drop the knife. Lynch then kept collapsing.
Mrs Smith added: “Officers called for an ambulance, but were told it would take several hours to arrive, so they decided to take him to hospital themselves.”
As they helped Lynch through the hallway he headbutted a police constable cutting his lip.
Daniel Harman, defending, said: “My client was suffering from mental health difficulties at the time and the police were effectively acting as social workers. It’s a rather sad aspect of this case, that a man is in such a state he is threatening to kill himself and the police are told an ambulance will take several hours.”