The HANS device is to prevent head&#x2F;neck damage by restricting movement (e.g. anti whiplash, which ironically can increase the chance of concussive type issues). This device, in contrast, is to artificially retain extra blood in the brain area, ostensibly to provide more of a blood cushion in the event of a high G event.<p>So I&#x27;d say the ideas are extremely different. They both have almost at odds goals.<p>A big part of the problem of football is probably the safety equipment itself -- the heavy helmets and paddings are exactly why players are smashing into each other at absurd speeds. If the players wore leather helmets it would probably yield a much safer game, however counter-intuitive that might be.<p>Similarly, the extreme footwear on the field now is a big reason ACL&#x2F;MCL injuries are on the rise -- they plant with such frictive force that normal athletic movements can endanger these weak links of human anatomy.