The described invention provides an endovascular device comprising a tube comprising at least one side-hole, a first segment comprising a primary opening and a second segment. The side-hole and the first segment form a working lumen. The second segment forms a support lumen where the support lumen is effective: (i) to provide stability to the working lumen of the endovascular device； (ii) to anchor the endovascular device within a blood vessel； (iii) to prevent catheter coil prolapse due to a counterforce against the endovascular device by one or more additional endovascular devices being delivered through the endovascular device to a more distal location or by a prolapsed coil tail of the endovascular device； and (iv) to facilitate placement of the second endovascular device distally.
