Former senator Rodney Culleton has mounted an eleventh-hour effort to save his parliamentary career, seeking to appeal the Federal Court decision that rendered him bankrupt and demanding Senate President Stephen Parry immediately withdraw his declaration of a vacancy.

"I've still got my senator's badge on and I'm going to my senator's office," he said on Thursday after a judge extended a 21-day stay on his bankruptcy order for a further week.

Senator Parry notified the West Australia Governor on Wednesday that a seat had become vacant. But, as he fights a legal war on multiple fronts, Mr Culleton has written to Senator Parry calling his actions "premature" because of the stay which was not due to expire until midnight on Friday.

His latest hearing, followed by a sometimes rambling press conference, came after West Australian Premier Colin Barnett said the state's parliament would not be brought back before the March 11 state election to ratify a replacement senator.