The HANS device F1 drivers have to wear in 2003 could be the cause of Justin Wilson's woes in the Malaysian Grand Prix.

Wilson was flying on track in Sepang until he had to pit through pain and exhaustion. After being helped from his car Wilson was taken by helicopter to Kuala Lumpur to be checked over and scanned.

Wilson's manager, ex-Formula One driver Jonathan Palmer explained to ITV pit reporter Louise Goodman that Wilson should be okay. "I think he's going to be fine," Palmer said.

"His right arm is pretty useless at the moment, he was in enormous pain," Palmer said before explaining that one of Wilson's harness straps had become dislodged during the race. "The seat belt came off the HANS device and lost tension," Palmer explained.

Without the strap holding him in place Wilson was thrown around in his seat. Under the terrific G-forces experienced in an F1 car it wasn't long before Wilson had to retire to the pits.

Wilson will undergo a scan to find out what has affected his right arm and shoulder.

The HANS device has been adopted for in an attempt to improve safety for drivers, but it has received a mixed reception. Ferrari's Rubens Barrichello blamed the device for his accident in Australia and opted not to run with the unit in Malaysia.