Patent ID: 7559451

Claim:
A full thickness resection device comprising: a control handle which, when the device is in a working position within a body lumen of a patient, remains outside a body, the control handle including an actuator; a working head assembly coupled to the control handle wherein, when the device is in the working position, the working head assembly is located within a body lumen adjacent to a portion of tissue to be resected, the working head assembly including first and second tissue coupling members moveable relative to one another; a flexible drive shaft extending from the actuator to the working head assembly; a first threaded member coupled to a distal end of the drive shaft for rotation therewith so that, as the drive shaft is rotated, the first threaded member rotates within a threaded channel in a first mounting bar coupled to the first tissue coupling member moving the first mounting bar and the first tissue coupling member relative to the second tissue coupling member; a gearing mechanism coupled between the drive shaft and the first threaded member so that rotation of the drive shaft rotates the gearing mechanism which rotates the first threaded member; a second mounting bar coupled to the first tissue coupling member and movably received within the working head assembly; and a second threaded member received within a threaded channel formed within the second mounting bar, the second threaded member being coupled to the first threaded member via the gearing mechanism so that rotation of the drive shaft rotates the first threaded member to rotate the gearing mechanism which rotates the second threaded member within the threaded channel.