Helping someone who doesn't want help

My brother is 34 years old and has had epilepsy since his early teens. He's gone years between seizures but within the last few years it's been more frequent, maybe a month or two in between having them. My family and I have struggled to get him to try new methods of dealing with it; he is adamant that he knows all the technology and that it won't help. We walk on egg shells around him, because we never know what will set him off and in some instances, cause him to react violently. He's not a violent person in general, but he seems to be so angry and he thinks he knows more than we do. All we want is to help him, but he won't listen to any suggestions we have. I worry that he is angry and bitter to the point of no return. I'm looking to see if there are any other families out there that have dealt with a similar kind of situation and have had any success being able to communicate with a loved one to help motivate them to try to find a way to deal with the seizures and to keep believing and looking for a cure. I just want my brother to have a normal life, to be happy and healthy, and to come to terms with his emotions. If there's anyone out there with any advice, I would be truly grateful. Thank you.