Before you buy sutures and things like that you might need to take a class to learn how to suture and what sizes of needles and what kind of suture material is good to use.... as far as the lidocane to deaden the area you have to have a dr write for that
If you know what your looking for you can buy a lot of what you want off ebay. I got my sutures, otoscope, and 2 nice suture sets off there...I got a few other medical instruments also....
Some places have medical supply houses, we had an emt supply place in fairbanks and I went in there when up there frequently to get syrenges, needles, and sterial gloves... I also occasionally got sutures from them as well as other useful medical supplies. (Not only did I take care of my family but the sled dogs too)