somehow those spines are going to have to come out. have they tried you on benadryl to control any allergic reaction? if this was a new problem i'd suggest rubber cement or duct tape to help get the spines out or fine tweezers. at this point they may have to open your hand up to get every last little fragment out so there isn't anything to cause irritation. it's like having a date with a cactus. i'd try antinflammatories and ice maybe benadryl and one more chat with the doctors.
i grabbed a dead banana spider on a banana from ecuador it's barbed bristles or spines embedded in my hand. the bristles were red and some black. chiquita said it was a banana spider. it was a large spider i started having a reaction about 30 mins. after grabbing it. this was 5 weeks ago i still have a lot of pain swelling tingling and can't hardly use my hand. i've gone to the doctors twice they don't know what to do. i live on a small se alaska island.