How can I fix my Nintendo DS hindge?

I have had my Nintendo DS for a very long time and a few months ago the piece of cover around the hindge conecting the bottom screen and top screen broke, although this made the top screen wobble the ds worked fine so I kept using it, unfortunatly the a joint in the middle of the ds, from the top screen has partly come away from a joint conecting to the bottoms screen, because of this when playing my ds the top screen is extremely blury and I can not play my DS, can I fix this or will I have to buy a new one?