Many of these things are tracked via taking the sticker off the device and putting it in the paper records.
Just because it isn't electronically tracked doesn't mean it's not tracked at all.
It needs to be tracked for recalls. It's (too) common for implants and things to be recalled, etc. They need to k ow who has what to do so.
As I said before, electronic health records are just a part of the picture.
(Edited to respond to your child comment)
If that's happening in your hospital system (loosing patient data when it enters the EHR) that's a problem you need to fix. It's not an indication that everyone has that same (major) issue. Your facility is not providing the standard of care expected and therefore patients will be harmed and your system will be sued (rightfully) as a result)