Patent ID: 9126015
Filing Date: 2015-09-08
Classification: A61B,A61M

Abstract:
1. A system for removing obstructive material from a body lumen, the system comprising: an elongate tubular member comprising a proximal end, a distal end sized for introduction into a body lumen, the distal end terminating in a distal face, and a lumen extending between the proximal and distal ends of the elongate tubular member; an annular expandable member on the distal end of the elongate tubular member, the annular expandable member configured to be expandable from a collapsed configuration to an expanded configuration, wherein: an elongate treatment member configured to be inserted through the lumen of the elongate tubular member and comprising an expandable treatment element selectively expandable for directing obstructive material within the body lumen into the lumen of the elongate tubular member through the inlet in the annular expandable member; and a dilator comprising a tapered distal tip having an annular recess, the dilator disposed within the lumen of the elongate tubular member such that the tapered distal tip partially extends beyond the annular expandable member in the collapsed configuration to provide a substantially smooth transition during introduction of the elongate tubular member into the body lumen.