  We study global topological defects in the Jacobson-Corley model which breaks
Lorentz symmetry and involves up to fourth order derivatives. There is a window
in the parameter space in which no solution exists. Otherwise, different
profiles are allowed for the same values of the parameters. For a scale of
  Lorentz violation much higher than the scale of gauge symmetry breaking, the
energy densities are higher, of the same order or smaller than in the usual
case for domain walls, cosmic strings and hedgehogs respectively. Possible
cosmological implications are suggested.
