Patent ID: 8105334

Claim:
A medical device, comprising: a sheath defining a lumen; an elongate member disposed within the lumen; and a basket connected to a distal end of the elongate member and being retractable within and extendable from the lumen, the basket including a plurality of legs, at least one leg of the plurality of legs including an inner core having an outer surface and an outer core covering the inner core, the outer core comprising a material that is substantially resistant to Holmium laser energy, wherein the outer core is fixed from sliding motion relative to the inner core in an expanded configuration and a retracted configuration of the basket, wherein the at least one leg of the plurality of legs includes a first portion, a second portion, and a third portion, wherein, in the first portion of the at least one leg of the plurality of legs, the outer core completely surrounds the outer surface of the inner core, in the second portion of the at least one leg of the plurality of legs, the outer core partially surrounds the outer surface of the inner core, and in the third portion of the at least one leg of the plurality of legs, the outer core completely surrounds the outer surface of the inner core, wherein the second portion is between the first portion and the third portion.