Hey there, thanks for writing. For those who don't know, the sales reps have to carry in racks and racks of parts. Most go unused but the last thing you want is something to go wrong and not have the piece you need readily available.
I've been in many different ORs and I've found that the rep's knowledge and level of participation varies a lot. Some of these reps have been working with the same products for years, the doc fully trusts them, and could probably perform the procedure themselves. Others not so much.