Civilian and military trauma surgeons have been using this technique for some years now, as part of damage control surgery. Bleeding is stopped and perfusion is restored as a priority before any complex surgical debridement or reconstruction. The technique undoubtedly saves both limbs, and disability in those limbs that are salvaged. Any old bit of sterile tubing will do, and I doubt this commercial device adds much in the short term. If you're not fazed by trauma/surgical images, then a picture of a shunt in action is available here.