The ABC has obtained footage of a hospital patient being tackled to the ground by a private security guard, resulting in a deep gash to the woman's head.

Key points: CCTV footage shows Toni Burcher being slammed into a lift doorway during an attempt to exit Logan Hospital

CCTV footage shows Toni Burcher being slammed into a lift doorway during an attempt to exit Logan Hospital Ms Burcher said she tried to leave after becoming distressed during questioning about her mental health condition

Ms Burcher said she tried to leave after becoming distressed during questioning about her mental health condition Acting director of Logan-Bayside Health Network said the security guard responsible lost his balance

Toni Burcher, who has a mental illness, was attempting to leave Logan Hospital, near Brisbane, with her husband when security guards blocked their way.

"They rushed at Toni and they tackled her backwards," her husband Robert Cowling said.

"She goes flying backwards and hits her head up against the corner of the concrete wall, splits her head open. She started screaming out in agony and pain straight away."

CCTV footage shows Ms Burcher being slammed into the edge of a lift doorway near the carpark.

The impact left a six-centimetre gash in her head, which required staples.

"When I look at the vision I'm thankful I was not injured more," Ms Burcher said.

The footage also shows Mr Cowling being pinned to the ground by other security guards for about two minutes, before being allowed up to help his wife.

"They wouldn't let me up and I'm saying, 'just let me go to my wife, I just need to calm her down, I need to comfort her, just let me go'," he said.

"One of the guards holding me down actually told the nurses to go away, to leave."

Toni Burcher, with her husband Robert Cowling, said she was thankful she wasn't more injured. ( ABC News: Alexandra Blucher )

Ms Burcher was on the ground for more than six minutes after the incident.

"In the end I was begging, begging for help in a hospital."

Ms Burcher had been taken to Logan Hospital after a suicide attempt on May 5.

But Mr Cowling said hospital staff did not seem to understand her mental health issues and were asking inappropriate questions about what method she had used to try to take her own life.

He also said Ms Burcher was very dehydrated and hadn't been connected to a drip.

"I don't think she was treated well at all," he said.

"I wanted to get her out of there, the staff were stressing her out. I wanted to take her to the QEII [hospital] where I know she would be treated better."

Queensland's Opposition health spokesman, John-Paul Langbroek, has seen the CCTV footage and says the incident needs to be investigated.

"If you've got a couple who are exiting a hospital you don't expect you're going to be crash-tackled by security guards as you try to walk out," he said.

"It's not good enough to sweep this under the carpet and say, there's nothing to see here, please move on."

The ABC contacted the office of Health Minister Cameron Dick for comment. It referred questions to Queensland Health.

Premier Annastacia Palaszczuk said the incident had been investigated by police and the health service.

"Can I say that we do want our security officers in hospital to act respectfully, not only towards the public but also towards other staff," she said.

'Accident happened when security guard lost his balance'

In response, the acting executive director of Logan-Bayside Health Network, Jacinta Powell, said Ms Burcher was "accidentally injured" when a security guard lost his balance.

"This is unfortunate and we are sorry for the distress this has caused the patient," Dr Powell said.

"There is much to be learned from this incident which will be used in training our contracted security staff into the future."

Ms Burcher has since lodged a complaint with the Health Ombudsman over the incident. ( ABC TV News )

In a letter to Ms Burcher, Dr Powell said "MSS Security is an external contractor to the Logan Hospital and therefore any concerns raised regarding this company should be raised to them directly".

Mr Cowling said he telephoned MSS Security three times to complain about the incident. His calls were not returned.

MSS Security did not respond to questions from the ABC.

"It's obvious that Queensland Health, who will have engaged this security company, are responsible for how that security company behaves when they're minding the premises," Mr Langbroek said.

Ms Burcher has lodged a complaint with the Health Ombudsman and the Office of Fair Trading, which regulates the security industry.