Patent ID: 9480390
Filing Date: 2016-11-01
CPC Classification: A61B

Claim Text:
1. A method for performing an endoscopic procedure comprising the steps of: placing an overtube over an endoscope shaft, the overtube further including an inner surface, an outer surface, a proximal end and a distal end, a positioning ring adjacent circumferentially the distal end on the outer surface, at least one sealing band on the inner surface, and an independently positionable occlusion catheter terminating in an asymmetrical occlusion balloon; at least one handle at the proximal end and on the outer surface for grasping and manipulation of the overtube within a body cavity, and, the endoscope shaft having a proximal end and a distal end, the distal end terminating in an endoscope tip; positioning the overtube over the endoscope shaft and move the overtube over the endoscope shaft as guide within a body cavity to a desired examination point proximal to the endoscope tip; inflating the positioning ring to create a seal between the outer surface of the overtube and a body cavity such that the inflated ring is proximal to the endoscope tip, wherein when inflated the positioning ring expanded asymmetrically around the overtube; inflating the sealing band to create a seal between the internal surface of the overtube and endoscope shaft; passing the independently positionable occlusion catheter terminating in the asymmetrical occlusion balloon through a passageway along the overtube to enter the body cavity at the end of the overtube; manipulating the independently positionable occlusion catheter to a selected point within the body cavity distal to the endoscope tip; and, inflating the asymmetrical occlusion catheter balloon to create seal between the asymmetrical occlusion catheter balloon and body cavity; and creating a sealed examination compartment between the positioning ring, the asymmetrical occlusion balloon and sealing band at the distal end of the endoscope shaft.