Todd Meadows died at sea while shooting "Deadliest Catch" last week, and now we know he had only been back at work for a few weeks before his tragic accident ... his mom tells TMZ he suffered a concussion that temporarily put him on medical leave. Angela Meadows tells TMZ ... Todd was hit in the head about a month ago while on the ship and -- according to protocol -- he got checked out by a doctor. When it was medically determined Todd had sustained a concussion, he was flown back home to

Tag-uri: accident