  The wave function transformation of the quantum particle considered as a
continuous medium was described by the evolution operator with the kernel in
the form of path integral. It is shown that this approach allows considering
not only Schrodinger evolution, but and the collapse phenomenon. The collapse
entity is the nonlocal transformation of the quantum particle internal
structure and it is not connected with its mechanical motion. Probably this
fact allows the instantaneous signalling using the collapse without violating
relativistic requirements.
