From a Braves media release:
ATLANTA – Braves left-handed pitcher Jonny Venters met with Dr. James Andrews who administered a platelet-rich plasma (PRP) injection in Venters' left elbow this morning. Jonny will be shut down for a period of four weeks. At the end of that period, he will begin a throwing program.
Well, that's better than Tommy John, but that's a long time without my fave Brave. :(