A medical device for resecting tissue. The medical device is slidably disposed within a working channel of an elongate introduction sheath. The medical device includes an elongate shaft having a proximal end, a distal end, and a lumen extending therebetween. The distal end of the elongate shaft may include an opening in communication with the lumen. In addition, the medical device includes a support structure having a slot extending along an inner surface of the support structure in communication with the lumen of the elongate shaft. The medical device further includes a snare loop having a first position disposed within the slot of the support structure, and a second position disposed within the lumen of the elongate shaft. An actuation member is slidably disposed within the lumen of the elongate shaft and is connected to the snare loop.
