Praveen Halappanavar, the husband of Savita Halappanavar has initiated legal action against the Health Service Executive.
It is understood that solicitors for Mr Halappanavar filed legal papers against the HSE West and Dr Katherine Astbury, who was his wife's obstetrician, in the past two days.
Mr Halappanavar's solicitor Gerard O'Donnell told RTÉ that he served a personal injury summons against both defendants alleging negligence in the death of Mrs Halanappavar.
Mrs Halappanavar died from septicaemia last October after she was admitted to Galway University Hospital with complications during pregnancy.
She was 17 weeks pregnant at the time she was admitted.
A HSE spokesperson said it was not in a position to confirm if documents had been received.
Mr O'Donnell said the papers were officially handed to the HSE's lawyers yesterday.
In April, an inquest into the 31-year-old's death returned a verdict of medical misadventure but the jury did not attribute blame to any individuals or body.
A separate HSE inquiry, which was published in June, examined the adequacy of the assessment and monitoring that Mrs Halanappanavar received and how this impacted on the ability of the clinical team treating her to recognise and respond to the signs that her condition was deteriorating.
Mr Halappanavar has indicated in the past that he was unhappy with the conclusions reached so far in relation to his wife's treatment, and that he was considering legal action against the State.