Embodiments of the present invention relate to systems, methods, and apparatus for introducing and/or controlling a snare in a lumen (e.g., a lumen of a catheter tube, a body lumen, etc.). In one example, a snare loading device can reduce the size of a loop on a snare to allow the snare to be inserted into the catheter tube. Furthermore, before and/or after insertion of the snare into the catheter tube, the snare loading device can control the snare, by transferring motion thereto.