Concerns were raised following reports the Corpuls 3 and 3T devices, carried by NSW ambulances, encountered thousands of malfunctions in recent years. The Therapeutic Good Administration issued a temporary halt on their sale following reports the devices were unexpectedly shutting down and rebooting during use. The measures were precautionary and bought more time to investigate the failures, the TGA said. Mr Park stressed there had been no reports of deaths of serious harm caused by failures of the devices in NSW. "I want to be clear, the TGA has not told us to remove these devices," Mr Park said.