The GAA’s failure to implement their own rules around helmet interference could lead to serious injuries, says Brennan.

The Cork-based sportswear firm that supplies helmets to many of the country’s top hurlers posted a €244,000 increase in profits last year.

He had to have the helmet strapped to his hand overnight, awaiting surgery to remove it today.

Scientists are developing crash helmets that change colour when the wearer suffers a brain injury.

A sports helmet that raises the alarm if a player suffers concussion is being developed in the hope that it will change behaviour on the pitch.