Patent ID: 9693764
Date: 2017-07-04
CPC Classifications: A61B,A61M

Claim:
1. A device comprising: an elongated tubular body having an axis, a proximal end, a distal end and a lumen longitudinally extending therethrough; a dilating tip slidably mounted on the distal end of the tubular body and movable between a closed configuration and an open configuration, the dilating tip comprising a segmented surface that is generally transverse to the axis of the tubular body in the closed configuration, and a segmented generally rigid tube extending distally from the segmented surface generally coaxial with the axis of the tubular body in the closed configuration, the segmented surface and the segmented generally rigid tube together being configured to move between the closed configuration in which the segmented generally rigid tube extends from the segmented surface and forms a sharp distal end and the open configuration in which the segmented surface and the segmented generally rigid tube together separate into segments having free distal ends that are separate from each other; a distal ring slidably mounted on the tubular body and connected to the segmented surface, wherein proximal movement of the distal ring relative to the elongated tubular body exerts a force on the segmented surface by the elongated tubular body to thereby open the segmented surface and the segmented generally rigid tube to the open configuration; a proximal slidable member on the elongated tubular body proximal of the distal ring, the proximal slidable member being connected to the distal ring so that proximal movement of the proximal slidable member causes proximal movement of the distal ring relative to the elongated tubular body; and one or more latches configured to engage one or more notches on the proximal slidable member for maintaining the proximal slidable member in position relative to the elongated tubular body when the dilating tip is in the open configuration.