I'll agree that it is a little suspect that the OP says he/she is a student and then in the post makes it sound like he/she is part of a regular crew. I wouldn't get to stuck on gurney, it is used frequently around these parts (and makes me cringe every time I hear it). This area (suicidal pts refusing treatment) is a somewhat gray area right now. Currently, suicidality is considered a mental health issue that leaves the person unable to make an informed decision. This means that they cannot refuse treatment. It is why states can involuntarily hospitalize people (5150 in California for those keeping score). So, in the OP's scenario the pt cannot refuse to be brought to the hospital. Now, as for the restraints, that is a whole other issue and is highly dependent on what local laws/protocols are. Not every suicidal person needs restraints (I'm assuming the OP means more than just the normal stretcher straps required to provide safe transport). The only time they should be used are when the pt is a physical threat to themselves or others. I don't think enough info is provided in the OP to really determine whether the restraints were needed or not. Unfortunately, in EMS there is a large proportion of providers who are complete assholes to suicide pts and don't realize that mental health issues are just as real as MIs and trauma.