The family of a doctor who died after undergoing a minimally invasive surgery to remove kidney stones at Woodlands Multispeciality Hospital has lodged an FIR against the surgeon who operated on him.

Jayanta Biswas, a 42-year-old general physician at Kalna Sub-divisional Hospital in Burdwan, died at the Alipore hospital on Monday night. He was admitted there on May 1 and underwent the surgery the next day. That night he turned critical after severe blood loss from the surgical wound and went into haemorrhagic shock. Biswas was put on ventilator and died at 11.10pm on Monday.

His wife Swati lodged an FIR with Alipore police station, alleging negligence by uro surgeon Arnab Krishna Deb and others.

“It was a common complication and we had tackled it on time. However, it was unfortunate that the patient did not survive,” said Deb.

The hospital authorities said they were conducting an internal probe. “If it is found that the death was caused by negligence, strong action will be taken,” said an official of the hospital.

“He developed post-surgical complications for which appropriate actions were taken and the patient was shifted to the critical care unit. Full support was provided by the hospital but the patient’s condition deteriorated and he unfortunately passed away,” a statement issued by the hospital read.

The body has been sent for post-mortem. “The report will be forwarded to the state medical council for its expert opinion. A case has been started under sections 304A (death due to negligence) and 34 (common intention),” said an officer of Alipore police station.

“If the doctor and hospital authorities had intervened in time, Biswas would not have died. The haemoglobin level in his blood had dipped because of bleeding from the wound. The drop happens gradually and could have been arrested,” said Arup Das, an orthopaedic surgeon at the Kalna hospital and a honorary assistant secretary (Bengal state branch) of the Indian Medical Association.

Anil Biswas, elder brother of the deceased doctor, said: “Jayanta was transferred to the ward after surgery around 1.30pm on May 2. During the afternoon visiting hours, he was drowsy but could speak. He complained of severe pain and there was blood in his urine. I told a junior doctor who was present there about this but he paid no heed. Then I alerted a nurse, who administered an injection.”

After he turned critical, Biswas was put on a ventilator and operated upon to stop blood circulation to the renal artery.