The answer is no for all three questions.
Welcome to Healthcare Magic!
Here are your answers.
Question 1.) Is that round piece Ever and I mean EVER Directly connected to the needle part of a syringe that inserts or goes into a persons arm ???? Is the Round piece ever directly connected or having direct contact (without intervening steps) to the needle part of a syringe ????
Answer: No, the round piece that you described cannot EVER be directly connected to the needle of the syringe.
Question # 2.) Is there ever a time when the end of the plunger on the outside ... The little round piece that you use to push down on to insert something into the body ..... Is there ever a time when that round piece is ever touching or having direct contact (without intervening steps) with the fluid in the tube or the fluid in the needle ..... JUST the ROUND end piece at the end of the plunger ... the little piece that you put your finger or thumb on to pull or push liquid through.
Answer: No, the outer end of the plunger is never in contact with the fluid in the tube or the needle.
Question # 3.) Plus I don't know if there is a METAL ROUND PIECE at the end of ANY syringe made ?? ... The part that you would push with your finger or thumb ..... Looking like (or would resemble or look like) a snap to a boat cover (a metal one).... is there???
Answer: No, there are no syringes with plungers having round metal piece at the end.
I hope this helps calm you, though I do not think this will be enough. Many times, OCD
related doubts cannot be assuaged with just a clarification. They keep persisting and require repeated clarifications, and when they clear up, it is only to be replaced by some other doubt.
Dr Preeti Parakh