The encounter you describe, was low risk. I am not familiar with the pinwheel you described, but from the description and what I can tell from the Internet, this device would be most unlikely to transmit HIV, even if used on another person without proper cleaning.  At the same time, I should acknowledge that the CDC has recommended not using this device in medical settings because of the challenges in cleaning it and potential for transmission risk. While transmission risk is specifically mentioned, I can find no reports of transmission of HIV or other blood-borne infections  With this device. The sharp points of the pinwheel appeared to be solid, and therefore would not transmit blood from, a person the person after you. In addition, if the pinwheel had been contaminated with blood or other HIV, containing secretions, HIV rapidly becomes non-infectious upon exposure to the environment. 

Yes, in response to your questions:

1. Even with hemorrhoids or other skin conditions, the risk of transmission with this device is purely theoretical and not something that I would be worried about about.

2.  HIV and other STI’s are not transmitted in lubricants. I would have no concerns that lubricants which might have been used on other persons as well as you would put you at risk for any infection.

3.  my advice is to move on. I would not be concerned. On the other hand, if you have lingering doubts or concerns, HIV testing is simple, inexpensive, and highly reliable. Testing using a standard fourth generation, HIV antigen/antibody tests is conclusive at anytime more than six weeks following and exposure and is more than 99% conclusive at four weeks.

I hope this information is helpful to you. EWH.

Thank you. I would be grateful if you could take a look at this link:

The pinwheel is similar to the one in this link. Does this change your assessment?

EWH