Not an expert here at all, but I don't think any trauma to the cervix should affect implantation in the uterus. If they did scrape your uterine lining a bit during the procedure that would probably only help implantation
Also, my son was stuck in the catheter and had to be flushed out (twice). I was scared that it would affect things, but it worked - it was also a single embryo transfer. Good luck to you!