Devices and methods for protecting an internal channel of a subject are disclosed. In one example embodiment, a device for protecting an internal channel of a subject includes a first end portion having a first diameter and defining a first opening, and a second end portion opposite the first end portion having a second diameter and defining a second opening that is in communication with the first opening. A body portion is defined between the first end portion and second end portion. The body portion defines an interior passage between the first opening and second opening, and is expandable along a longitudinal axis from a collapsed state to an expanded state.