The grieving family of a much-loved father claims he died because of alleged neglect, and are desperate for change at a busy Australian hospital.

Dennis Carruthers, 82, was laid to rest in a funeral service held in northwest Sydney on Monday.

WATCH THE VIDEO ABOVE: Grieving family demands action after father’s death at Blacktown Hospital.

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He had been discharged from Blacktown Hospital earlier in July having battled bacterial infection cellulitis in his legs.

He died when his legs gave way days later.

“(My father) needed to be in hospital, and he probably would still be with us today [if he was],’ his son Brad Carruthers told 7NEWS.

“He didn’t get the attention he needed. He needed more time.”

Carruthers said the hospital was understaffed, health workers were under the pump and his dad was pushed out the door before his legs had time to heal.

“He said ‘I just need more time’ and they kept saying ‘no, you’ve got to go, we’ve got this room for someone else’,” Carruthers said.

Health Minister Ryan Park told 7NEWS: “I offer my sincere condolences to the family.”

“Western Sydney Local Health District is urgently looking into this matter.”

Park added that Dennis Carruthers was medically assessed as “fit for discharge” and had been given a home visit and follow-up care.

It comes almost a year after a 7NEWS investigation exposed a crisis at Blacktown Hospital. More shocking images emerged just last week.

“The situation at Blacktown Hospital is out of control,” NSW Opposition Leader Mark Speakman said.

The Carruthers family wants action now, “so it doesn’t happen to someone else’s father”.

They have suggested a deep and proper investigation into the hospital.

7NEWS understands moves are being made at state parliament for an inquiry and developments should be seen this week including a recruitment drive and safe staff ratios.