AN ENDOSCOPE ACCESSORY

摘要

An endoscope accessory comprises a flexible sheet wrapped around the endoscope shaft to form a flexible overtube. The overtube has an inflatable positioning ring just proximal to the tip of the endoscope or echoendoscope to secure the position of the overtube within the body cavity. The overtube also has a sealing band within the internal surface of the overtube that when inflated create a seal around the endoscope shaft. Another part of the device is the catheter with an occlusion balloon at its free end portion that is carried by the overtube and extends beyond the tip of the endoscope. Inflation of the positioning ring, sealing band and occlusion balloon defines an examination compartment within the body cavity at the tip of the endoscope that can be filled with air or water for improving the quality of the endoscopic examination with regular endoscope of echoendoscope.

主权项

1. An endoscope accessory which comprises:
a flexible elongated sheet, sized to envelop a flexible endoscope or echoendoscope shaft, having first and second faces, a proximal end portion, a midportion, a distal end portion, and opposed longitudinal edge portions coacting to form a flexible overtube when said longitudinal edge portions overlap, said overtube defining an external surface and an internal surface and a central through passageway for receiving therewithin the endoscope or echoendoscope shaft, and an inflatable pocket on the second face of the sheet, extending across the entire width of the sheet at the distal end portion of the sheet, an forming an inflatable positioning ring on the external surface of the flexible overtube when the opposed longitudinal edge portions are joined to form the flexible overtube; and an inflation tube in communication with said pocket and provided with an inflation catheter.