An endoscopic device comprising: a tube having a distal end region, a proximal end region, and a central axis passing through the distal end region, the tube defining a channel from the proximal end region to the distal end region; a first jaw extending from the distal end region of the endoscopic device on a first side of a plane through the central axis, the first jaw having a first interior surface oriented toward the central axis and a first exterior surface oriented away from the central axis, the first jaw defining a first opening passing through the first jaw from the first interior surface to the first exterior surface; a second jaw extending from the distal end region of the endoscopic device, the second jaw pivotally coupled to the distal end region by a pivot on a second side of the plane opposing the first side, the second jaw including a second interior surface facing the first jaw and a second exterior surface facing away from the first jaw, the second jaw defining a second opening passing through the second jaw from the second interior surface to the second exterior surface, the second jaw having a closed position in which the first jaw and the second jaw are bounded by a wedge formed by two planar surfaces (704, 706) intersecting at a vertex on the first side of the plane, and the second jaw movable about the pivot to an open position wherein a second distal end of the second jaw moves across central axis to the second side of the plane to create a working volume about the plane between a first distal end of the first jaw and the second distal end of the second jaw; and an actuator operable to move the second jaw between the closed position and the open position. a tube having a distal end region, a proximal end region, and a central axis passing through the distal end region, the tube defining a channel from the proximal end region to the distal end region; a first jaw extending from the distal end region of the endoscopic device on a first side of a plane through the central axis, the first jaw having a first interior surface oriented toward the central axis and a first exterior surface oriented away from the central axis, the first jaw defining a first opening passing through the first jaw from the first interior surface to the first exterior surface; a second jaw extending from the distal end region of the endoscopic device, the second jaw pivotally coupled to the distal end region by a pivot on a second side of the plane opposing the first side, the second jaw including a second interior surface facing the first jaw and a second exterior surface facing away from the first jaw, the second jaw defining a second opening passing through the second jaw from the second interior surface to the second exterior surface, the second jaw having a closed position in which the first jaw and the second jaw are bounded by a wedge formed by two planar surfaces (704, 706) intersecting at a vertex on the first side of the plane, and the second jaw movable about the pivot to an open position wherein a second distal end of the second jaw moves across central axis to the second side of the plane to create a working volume about the plane between a first distal end of the first jaw and the second distal end of the second jaw; and an actuator operable to move the second jaw between the closed position and the open position.