Radiator Overflow Bottle

Recently opened the Radiator overflow Bottle on my 2000 Windstar and noticed something other than coolant in it. After fishing the pieces out with a pair of long needle nose pliers I determined that the pieces were parts of the plastic ribs inside bottle. Is this commmon on the Winnie? If you fail to notice them can they get into the cooling system and cause trouble? I would sure think they could! Hopefully I got all of them out in time. Something else to watch out for Guys!!