The only ways that HIV is transmitted have been given. What you describe is not going to transmit the virus. You can argue but these are the facts. Unless you have unprotected vaginal or anal sex or share IV drug needles to inject drugs, you do not need to worry about HIV.
Why do you THINK health care workers wear gloves? You think that is because of HIV? No. They know how HIV is transmitted. But there are other viruses that THEY have they don't want to spread and viruses that others have that they don't want to get. Think . . . cold, flu, etc. Think germs and infection. Not hiv.
The only risks for HIV in adults are:
1) Having unprotected anal or vaginal sex, or
2) sharing intravenous needles with IV drug users.
You can't get HIV from someone scratching you, even if that person had blood on their hands. HIV has to enter your bloodstream, which is NOT easy, and never happens when superficial cuts or scrapes are involved.