Patent ID: 8790235
Filing Date: 2014-07-29
Classification: A61N

Abstract:
1. An anchor mechanism, adapted for use with an implantable structure that is adapted to be implanted into patient tissue using a hollow needle, where the structure is a strand comprising at least one radioactive seed, the anchor mechanism comprising: a main body having a main body diameter, a first longitudinal end and a second longitudinal end, and a bore that extends between the first and second longitudinal ends of the main body; and a plurality of wings integrally formed with one of the first and second longitudinal ends of the main body and extending away from the main body in one of a leading and a trailing longitudinal direction without extending past the main body diameter; wherein the anchor mechanism is adapted to be implanted into patient tissue adjacent the structure using the same hollow needle that is adapted to implant the structure into patient tissue; and wherein the wings are biased such that at least a portion of the wings move outward past the main body diameter to engage surrounding patient tissue after the anchor mechanism is expelled from the hollow needle into patient tissue, to thereby reduce a tendency for both the anchor mechanism and the adjacent structure to migrate after implantation.