Patent ID: 8529581

Claim:
An apparatus used to remove a unwanted object comprising: a guide; an expandable toroidal balloon pre-rolled and only attached to a distal end of said guide's external surface and is not attached to any other point of said guide, said toroidal balloon unrolled over a length of said guide such that said toroidal balloon's surface is displaced along longitudinal length and an external surface of said guide and such that said toroidal balloon is disposed external to said guide, said expandable toroidal balloon comprising: an internal balloon surface of said toroidal balloon contacting a unwanted object; an external balloon surface of said toroidal balloon configured for contacting a biological wall; said expandable toroidal balloon draws a unwanted object via an inversion of said internal balloon surface and external balloon surface, with said inversion safely guiding removal of said unwanted object without sliding of said external balloon surface against any contacted biological wall, but by allowing low friction extraction by sliding of said internal balloon surface of said toroidal balloon.