UMD disk drive broken, spinner

My psps (1004) Disk drive broke in a weird way. the magnetic spinner that has contact with the umd discs crumbled and was stuck to my game. of course the psp could not read the discs anymore.

here are some pictures of the drive and the broken part

can I buy that broken piece somewhere or do I have to buy a complete drive?

I could not find the drive for the psp 1004 on the ifixit parts list.

thank you for your help!