Hi Gemma, I wouldn't get too hung up about the detail that other people know. If you feel you want to know more, then please just tell your surgeon that you you want to know more and don't let the "I'm incredibly busy" act put you off. Were you assigned a specialist nurse as a point of contact? If so he or she may be a good person to tell that you want to know more. You may need to interpret some of the comments made by our american friends where the medical system works differently to ours.
Good luck