Adhesions are often impossible to prove, regardless of the diagnostic test performed. I would expect capsule endoscopy to be worthless for this purpose. Even with surgery it can be difficult to reliably find and lyse the ones actually causing the blockages. The surgery itself causes new adhesions to form, and they can create new (or even worse) problems. Nevertheless, some people are fortunate enough to get their lives back from adhesion surgery. Things have to be bad enough to make it worth the risk of failure, though.
Duck, I hope things get better for you!