Flyers general manager Ron Hextall said Kimmonen won't play for months and that he will be reassessed in the New Year.
"Like Hexy said, it's going to take months to see if the clots are gone or are still," Timonen said, according to the blog Broad Street Hockey. "The chances of me playing are really slim. My desire is to play but I have to listen to the doctors."
Kimmonen, 39, has played in 1,092 games over 15 seasons in the NHL. The Flyers went 82-42-30 last season before being eliminated in the first round of the playoffs.
- Chris Johnson