The widower of a Lincolnshire woman who died after doctors missed a six-inch piece of plastic embedded in her buttock has begun legal action.
Cindy Corton, 35, from Sleaford, died in 2009 after the source of her pain went undiagnosed for two years.
Peter Corton started legal proceedings against United Lincolnshire Hospitals NHS Trust after a coroner ruled the case represented a "serious failure".
The Trust admitted more should have been done.
The inquest at Grantham Magistrates' Court heard Mrs Corton suffered increasing pain after falling on to a plastic brush in a toilet in 2005.
Despite several visits to hospitals in the county the object was not noticed until an MRI scan in 2007, when Mrs Corton underwent two failed operations to remove it.
She died in 2009 following complications related to a third operation.
Mr Corton, who has started a civil action against the Trust, said he believes she would still be alive if the correct diagnosis had been made earlier.
He said: "As time went on she gradually developed a pronounced limp, she had a constant smell from the wound, which wouldn't heal, she couldn't sit or lie down and was in constant pain.
"My wife got very poor service from the NHS.
"I feel the Trust needs to investigate its procedures and hopefully it won't cause the same problem in the future for other people."
West Lincolnshire Coroner Stuart Fisher said he had "no doubt" Mrs Corton would not have died had further examinations been made earlier by doctors.
A Trust spokesman said the case was "unusual" and all the facts were not given on Mrs Corton's visits to A&E departments.