Patent ID: 9669197
Date: 2017-06-06
CPC Classifications: A61B,A61M

Claim:
1. A medical device for providing access within a patient, comprising: an overtube having a lumen and a slot defined by a side-surface of the overtube, the slot having a length less than a length of the overtube; and an elongate member configured to be disposed within the lumen of the overtube, the elongate member defining a bore that extends a length of the elongate member, the elongate member including an expandable member at a distal end portion of the elongate member and configured to expand and collapse, the overtube configured to move longitudinally relative to the elongate member between a plurality of positions including a first position and a second position; wherein, upon expansion of the expandable member when the overtube is in the first position, a first portion of the expandable member facing the slot is configured to expand out of the slot, and a second portion of the expandable member facing away from the slot is restricted from expansion by the overtube, wherein the overtube is configured to move distally to the second position such that a volume of the first portion expanded through the slot is decreased; an insert component configured to be inserted into the bore of the elongate member; and a first valve disposed on a housing of the elongate member, the first valve fluidly coupled to the bore of the elongate member, wherein the first valve is configured to permit passage of insufflation fluid through the bore and out of the elongate member in order to dissect tissue layers.