The anesthetic assistant was hit on the shoulder by the loose surgical light and bracket contraption that fell onto the operating table at United Christian Hospital. He was sent to the accident and emergency department and discharged with a minor injury.

Speaking on a radio program on Monday, Yuen Pak-leung, senior manager of the Hospital Authority, said they have completed comprehensive checks at 29 public hospital operating theatres that use the same model of surgical light.

He said 12 of the surgical lights were found with loose screws and the operating theatres using those lights will be suspended from service.

Meanwhile, the other operating theatres will continue to operate with more frequent inspections at once every two weeks, Yuen added.

He said the Hospital Authority will also check other surgical lights at all public hospitals over the coming days.

Speaking on the same radio program, Tony Ling Siu-chi, president of the Hong Kong Public Doctors' Association, said the case was not an isolated incident as the Authority’s maintenance contractor has found similar issues with other surgical lights.

He also raised concerns about the possible fallout should the light fall on patients mid-operation.