A tissue traction device having a segment defined along a limited extent about the perimeter of the tissue traction device and more flexible than surrounding regions of the tissue traction device. The tissue traction device is actuatable to bend along the more flexible segment thereof, generally in a direction of a side of the tissue traction device opposite the more flexible segment thereof. The tissue traction device may be formed from one or more flexible tubular elements, with the flexible segment along a limited extent about the perimeter of the one or more tubular elements. A tissue traction system may be configured to provide actuation medium, such as an inflation medium, to the tissue traction device to control movement of the tissue traction device. The tissue traction system may include one or more flexible tubular elements, a distal end of which forms the tissue traction device.