User blog comment:Xilinoc/Ch. 681 - THE END TWO WORLD/@comment-26258-20160707151444/@comment-24963493-20160707203717

I think last time his bankai broke the bigger issue was that it wasn't his true power, so it didn't matter if Orihime could fix it or not, Ichigo needed to go to the SK Palace regardless to unlock his true power. Also, I think Orihime was in Hueco Mundo at the time, so she couldn't fix his bankai anyway.