Jansen had been on the DL since May 29 with right shoulder inflammation and was on a rehab assignment with Chattanooga. He has a 6.43 ERA in 20 appearances with the Dodgers, although 12 of the 15 runs he's allowed came in three games and he was scoreless in the other 17.
Jansen said his shoulder is healthy and that, while at Chattanooga, he worked on secondary pitches, including a new splitter. With the urging from management, he also lost 10 pounds by paying attention to his calorie intake. He also said he's "learned his lesson" from trying to pitch through pain.
"This [pitching] is a new position for me," said Jansen, a converted catcher. "I tried to go out and compete, even with pain. I realize now it cost me almost three weeks. When you're catching, your body is sore and you just go through it."
Lindblom, who was called up to replace Jansen, pitched well in his first Major League stint, compiling a 1.69 ERA in eight appearances.
"They told me it was pretty much a numbers game," said Lindblom, who revived his career after a dreadful 2010 season. "What I did, from where I came last year, they were proud of that as far as the advancement. Now that I've been here, I know I can get big league hitters out."
Lindblom said his successful stay boosted his confidence and he won't fall victim -- as others have -- to being bitter after getting demoted despite pitching well.
"It's not my way to go back and mope," he said. "This has been my dream my whole life. I'm sure I'll just be more hungry to get back and not take anything for granted. Anybody can be sent back anytime."
Manager Don Mattingly said Lindblom needs to work on varying his pitch sequences against left-handed hitters (.455 batting average against him) compared to against right-handed hitters (.125).
Mattingly also said he expected to activate Hong-Chih Kuo from the disabled list on Sunday, leaving two relievers (Vicente Padilla and Jonathan Broxton) on the disabled list.
Padilla is out for the year with neck surgery. Broxton is expected to start a Minor League rehab assignment Monday for Triple-A Albuquerque and could rejoin the Dodgers the following week.