A patient bled to death in hospital after one of his veins was punctured during treatment, an inquest heard.
John Glyde, 48, was being treated for chronic kidney and heart disease at the Royal Derby Hospital when the tragedy occurred last June 19.
When he was being hooked up for a dialysis session, the line nicked a vein in his leg, the hearing at Derby Coroners' Court was told.
Mr Glyde, of Ashby-de-la-Zouch in Leicestershire, bled to death as a result of the puncture, the inquest heard.
The medical cause of death was given as intra-abdominal haemorrhage, meaning bleeding within the abdomen, reports Derby Telegraph.
This was caused by a small hole or piercing caused by medical treatment - in Mr Glyde's case, the dialysis procedure, the inquest heard.
The accident is said to have happened when a catheter punctured Mr Glyde's femoral vein.
Hypertensive heart disease and chronic kidney disease from which he was already suffering were also listed as contributory factors that did not lead directly to death.
Dr Robert Hunter, senior coroner for Derby and Derbyshire, opened the inquest and adjourned it to a later date pending further further reports.
He also declared an interest in the case, meaning Louise Pinder, assistant coroner for Derby and Derbyshire, will take over the inquest.
University Hospitals of Derby and Burton NHS Trust, which runs Royal Derby Hospital, declined to comment until the end of the inquest.
The inquest continues.
