Patent ID: 8568297

Claim:
A propellable apparatus attached to a front-end tip portion of an endoscope, the propellable apparatus comprising: a self-enclosed member configured to fit within and partially engage a cavity or lumen wall, the self-enclosed member including an inner surface at least partially defining an enclosed region, and an outer surface that turns outwardly to engage the cavity or lumen wall in addition to turning inward to at least partially encompass a central region defining a longitudinal path; an internal drive mechanism engageable with the outer surface of the self-enclosed member, thereby providing relative movement between the self-enclosed member and the cavity or lumen wall; and a tapered member positioned adjacent a back-end of the self-enclosed member, the tapered member providing a size transition from the back-end of the self-enclosed member to a diametrically smaller outer surface of the endoscope that is insertable within the central region, wherein the tapered member is a different member than the self-enclosed member.