Does anyone hav a bub that chokes on all foods?

my boy is now 10 months old, and will only have pureed food!!! anything as long as its pureed..... will choke and then projectile vomit if its mashed or lumpy i have been trying for months to increase the amount and the consistency of his food to no avail !!!!! he is eating the same since he was 5 months old!!! any ideas???