After watching some of the analysis post hit, I am not sure we need to page the NHL Department of Player Safety.
Former NHL official Kerry Fraser gives us a pretty good explanation of what happened with hit and they had the benefit of having a big screen TV screen to break down the hit.
Edit: Senators defenseman
Eric Gryba absolutely destroys Montréal Canadiens forward
Lars Eller with a vicious shoulder-to-torso hit, in my opinion this is probably not a violation of the NHL's rule 48. Also, I would not be too happy with my teammate for making that suicide pass.