How to separate one part of the sprite from the entire sprite object

[LeaZer_Ua]

I want to make some part of sprite disconnect and become separate object, after getting lethal damage. For examle, an arm from creature body, that will drop down on the ground or will fly another hundred meters

I have this sprite with bone animations. Tried few ways of solving, unfortunately, everything failed.

[rarac]

you need to make the body in separate parts and then remove the arm part