Patent ID: 8083666

Claim:
A tissue resection system, comprising: a guide element; a resection head comprising a guide channel slidably receiving the guide element and an endoscope channel sized to slidably receive an endoscope therein, so that, when the resection head is slid along the guide element, the endoscope and the resection head follow a path defined by the guide element; a positioning mechanism moving the resection head relative to a distal end of the endoscope between a first position in which the distal end of the endoscope extends distally out of the endoscope channel and a second position in which the distal end of the endoscope is received within the endoscope channel, the positioning mechanism including arms advancing the resection head beyond the distal end of the endoscope; and an actuating mechanism moving a portion of an outer wall of the resection head to open and close a resection chamber defined by the outer wall.