I am so sorry for your loss! I am very sorry you had to deal with that.
I was so freaked out about that when I was pregnant that I did some looking and found a new monitor that I LOVE. My LO is not almost 15 months and it is still working great! I don't know if somthing "new" has come out since my LO was born but we really love this and would buy it again.
And I see that the price has gone down a lot since we got it. And that is just an added bones. I so love this. if your LO stops breathing for a set amount of time(what ever you pick 10,015 seconds) then it will vibrate under your LO and make an alarm in the room and on your hand held devise. So if you are asleep it will wake you. I am using it right now as my LO is sleeping and I can hear each breath! And the night vision on this thing is AMAZING!
It is called angelcare 3-in-1 video baby monitor