Police were called to Royal Lancaster Infirmary at 12.45am on Tuesday, March 29 following reports a woman had been assaulted.
The victim, a 43-year-old woman from Morecambe, had been walking on Claremont Road around 10.30pm on March 28 when she was approached by two men.
One of the men stopped the woman and demanded money before searching her pockets.
When the victim refused to hand over cash, the man pulled a crow bar from his pocket and hit the woman, cutting her forehead.
The 43-year-old fell to the floor and shouted for help before the man started searching her pockets again, taking a Nokia mobile phone.
Both men then ran away towards the alleyway between Claremont Road and Clarendon Road.
The first attacker is described as white, of slim build with short spiky blonde hair and aged in his mid-20s. He was wearing a long grey coat and blue jeans.
The second man is described as white, of slim build, with grey hair and aged in his early-50s. He also had a lazy eye.
Officers are appealing for information following the attack.
Sgt Simon Balderstone, of Lancashire Police, said: “This was a particularly nasty and vicious robbery which left a woman needing treatment for a bad head injury.
“It was a harrowing ordeal for the victim involved and we are keen to find those responsible for this cowardly attack.
“We would like to speak to anyone with information about the incident and would urge them to contact police immediately.”
If you can help, contact police on 101 quoting crime reference WB1602481.
Alternatively, contact Crimestoppers anonymously on 0800 555 111 or online at Crimestoppers-uk.org. No personal details are taken, information is not traced or recorded and you will not go to court.
n Police have arrested a 37-year-old man from Lancaster on suspicion of robbery and a 24-year-old man from Morecambe on suspicion of robbery and possession of a Class B drug. Both are currently in police custody.