Patent ID: 8518054

Claim:
A medical retrieval device, comprising: a proximal handle; a sheath extending from the handle and including a lumen and a distal end opposite the handle; and a retrieval assembly that is moveable relative to the sheath to achieve a collapsed position of the retrieval assembly within the lumen and an expanded position of the retrieval assembly when extended outside the lumen, the retrieval assembly including a plurality of legs, at least one of the legs including a wire having an inner core at least partially surrounded by a single outer layer, wherein the outer layer is fixed from sliding motion relative to the inner core, wherein, in a first portion of the wire, the outer layer completely surrounds an outer surface of the inner core, in a second portion of the wire, the outer layer only partially surrounds the outer surface of the inner core, and in a third portion of the wire, the outer layer completely surrounds the outer surface of the inner core, wherein the second portion is between the first portion and the third portion.