@kartwk Oh, my, I’m so sorry that it has come this far and you feel that he is a hazard. Is there a 3rd person, his doctor or minister, or a good friend, who could sit with both of you and help both of you talk about the problem? The doctor’s office may have a social worker on staff who would be able to do this for you.
Do you think something like this might work?

@kartwk, I am concerned when I hear you say that this is getting out of hand. And I want to strongly urge you to make an appointment with his doctor for an examination. This is not the way you/or anyone should be treated. Your health and his health are at stake here.

Kartwk, There might be more going on for him in addition to the pain and frustration that he acting on. If you were my neighbor or my sister, I would tell them to call the doctor add make an appointment. When has he last been to his doctor for a check-up and examination?
You should call today so that you can get it scheduled. Will you do that?

Wow! So sorry to hear what you're going thru. It sounds like you're working so hard to do the best you can for him.
I think Becky's suggestions are extemely important to consider. Especially if there's someone that your husband may be more receptive to. It sounds to me like there are emotional, physical, and social extremes that are creating an unsafe environment for both of you.
My dad could be very inconsiderate, pushy and angry when we took turns caring for him. For some reason he was mostly that way with my sister. Lots of hurt feelings. We did notice that certain care givers would actually have a calming affect on him. Hope you can reach out to those resources. Ernie

I empathize with you having your own health problems and having to deal with an unhappy and demanding husband.
I hope you can find counsel from a therapist or spiritual leader.
Please hang on; we must believe that things will get better in some way. You're in my prayers~