The Saints listed Bush as out on Friday as the running back recovers from surgery to repair the meniscus in his left knee.
Shockey, who missed three games because of sports hernia surgery in Week 4, has played in pain in two games since his return, but has been helped by a bye week.
The bye week enabled Patten to return after missing the last four games with a groin pull.
The Falcons were without rookie left tackle Sam Baker, who had surgery last week on his lower back but is expected to return this season.
Another offensive tackle, Quinn Ojinnaka, also was inactive for Atlanta.