Hi, dear I have gone through your question. I can understand your concern. There is very rare chance of infection spread by this way. Its almost negligible chance. The pin is solid needle. HIV virus dies within few minutes. It can not survive in the external environment. Chance is there with hollow needle but with solid needle chance is very low. SO don t worry about infection. just be relaxed. Hope I have answered your question, if you have any doubts then contact me at bit.ly/Drsanghvihardik, I will be happy to answer you. Thanks for using health care magic. Wish you a very good health.